Creator · calesthio
Last updated · Sep 5, 2026
Official GSAP skill for GSAP plugins — registration, ScrollToPlugin, ScrollSmoother, Flip, Draggable, Inertia, Observer, SplitText, ScrambleText, SVG and physics plugins, CustomEase, EasePack, CustomWiggle, CustomBounce, GSDevTools. Use when the user asks about a GSAP plugin, scr
Creator · calesthio
Last updated · Sep 5, 2026
Official GSAP skill for GSAP plugins — registration, ScrollToPlugin, ScrollSmoother, Flip, Draggable, Inertia, Observer, SplitText, ScrambleText, SVG and physics plugins, CustomEase, EasePack, CustomWiggle, CustomBounce, GSDevTools. Use when the user asks about a GSAP plugin, scr
Creator · calesthio
Last updated · Sep 5, 2026
Official GSAP skill for GSAP plugins — registration, ScrollToPlugin, ScrollSmoother, Flip, Draggable, Inertia, Observer, SplitText, ScrambleText, SVG and physics plugins, CustomEase, EasePack, CustomWiggle, CustomBounce, GSDevTools. Use when the user asks about a GSAP plugin, scr
Creator · calesthio
Last updated · Sep 5, 2026
Official GSAP skill for GSAP plugins — registration, ScrollToPlugin, ScrollSmoother, Flip, Draggable, Inertia, Observer, SplitText, ScrambleText, SVG and physics plugins, CustomEase, EasePack, CustomWiggle, CustomBounce, GSDevTools. Use when the user asks about a GSAP plugin, scr
Review then install
Install targets
Codex install prompt
Install the "gsap-plugins" agent skill from https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/gsap-plugins. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: Official GSAP skill for GSAP plugins — registration, ScrollToPlugin, ScrollSmoother, Flip, Draggable, Inertia, Observer, SplitText, ScrambleText, SVG and physics plugins, CustomEase, EasePack, CustomWiggle, CustomBounce, GSDevTools. Use when the user asks about a GSAP plugin, scroll-to, flip animations, draggable, SVG drawing, or plugin registration. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {"event_id":"install_<unique-id>","skill_slug":"calesthio-gsap-plugins","task":"Install gsap-plugins","agent":"codex","outcome":"success","install_used":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.Supply asset profile
Code review, repo analysis, testing, CI, GitHub, DevOps, and developer workflow skills.
Scenario
Coding agents
I need a coding agent that can understand a repository, edit code, and review pull requests.
Agent fit
Claude Code + Cursor + Browser agents
Codex, Claude Code, Cursor, CLI, or custom agents.
Install
Ready
npx skills add calesthio/OpenMontage --skill gsap-plugins
Maintenance
fresh
16d since push
Risk
Needs review
Financial research output is not financial advice; require human review before any live investment decision
GitHub quality
56K
94/100 Quality · 85/100 Trust
Coverage tags
Review notes
Financial research output is not financial advice; require human review before any live investment decision · Financial research output is not financial advice; require human review before any live investment decision.
Agent adoption scorecard
These scores combine public repository metadata, OpenAgentSkill review signals, maintenance freshness, and install readiness. They are a shortlist signal, not a replacement for human review.
Quality
ExcellentHigh-confidence pick with strong adoption and healthy maintenance signals.
Trust
Review then installGood shortlist signal, but the agent should review audit notes, install policy, and outcome evidence before running it.
Audit
Needs reviewA machine-readable review of install readiness, security metadata, maintenance, and adoption risk.
OpenAgentSkill Trust Score v5
Use as the primary candidate after human or sandbox review.
Stars
56K GitHub stars
Repo activity
56K stars, 7.0K forks
Maintenance
16d since push
License
MIT
Install
npx skills add calesthio/OpenMontage --skill gsap-plugins
Install safety
Agent-readable metadata
Use this block or the embedded JSON to decide whether an agent should install this skill, choose an alternative, or ask for human review first.
Suited tasks
Suited agents
Install decision
Trust and risk
Outcome loop
Install command
npx skills add calesthio/OpenMontage --skill gsap-pluginsDo not use when
Agent safety v2
Usable candidate, but the agent should surface permission and audit notes before installation.
Require human approval before installing into a real workspace.
medium
Skill likely fetches remote pages, APIs, repositories, or external services.
medium
Skill may read or write project files, documents, generated artifacts, or local workspace state.
Agent resolve plan
The Resolve API returns the selected skill, alternatives, safety policy, audit notes, install target, and copy-paste prompt an agent can follow without scraping this page.
Open JSON
/api/agent/resolve?task=Use%20gsap-plugins%20for%20an%20agent%20workflow&agent=codex&max_risk=medium
Resolve text
/api/agent/resolve?task=Use%20gsap-plugins%20for%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text
Install handoff
/api/skills/calesthio-gsap-plugins/install
Agent should check
Copy prompt
Task: Use gsap-plugins in this workspace.
Resolve first: https://www.openagentskill.com/api/agent/resolve?task=Use%20gsap-plugins%20for%20an%20agent%20workflow&agent=codex&max_risk=medium
Review install handoff: https://www.openagentskill.com/api/skills/calesthio-gsap-plugins/install
Install command: npx skills add calesthio/OpenMontage --skill gsap-plugins
Before running it, summarize audit warnings, required permissions, and the fallback skill if install is risky.Agent handoff
Use the public install endpoint to fetch the command, safety checklist, target prompts, and canonical links for this skill.
Install handoff
/api/skills/calesthio-gsap-plugins/install
LLM text format
/api/skills/calesthio-gsap-plugins/install?format=text
Find alternatives
/api/skills/search?q=gsap-plugins&limit=3
Agent prompt
Use gsap-plugins for this task. Review https://www.openagentskill.com/api/skills/calesthio-gsap-plugins/install, then install with: npx skills add calesthio/OpenMontage --skill gsap-pluginsRegistry metadata
This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.
Manifest
/api/registry/manifest/calesthio-gsap-plugins
LLM text
/api/registry/manifest/calesthio-gsap-plugins?format=text
Install alias
/api/registry/install/calesthio-gsap-plugins
Recommend
/api/registry/recommend?task=Use%20gsap-plugins%20in%20an%20agent%20workflow&limit=3
Agent fit
Browser automation
Use-case tags
Platforms
Claude Code, Cursor, Browser agents
Audit report
A machine-readable review of install readiness, security metadata, maintenance, and adoption risk.
Agent decision cockpit
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Role in stack
Primary pick
Primary fit
Browser automation
Trust label
Production-ready
Install path
Command ready
Use when
Evidence
review first
Implementation path
Trust profile
Good shortlist signal, but the agent should review audit notes, install policy, and outcome evidence before running it.
GitHub adoption
PASS56K GitHub stars
Stars/forks activity
PASS56K stars, 7.0K forks; issue activity unavailable in current metadata
Recent maintenance
PASS16d since push
License clarity
PASSMIT
Good signals
Review before install
Recommended action
Use as the primary candidate after human or sandbox review.
Quality profile
High-confidence pick with strong adoption and healthy maintenance signals.
Workflow fit
Operate web apps
I need my agent to control a browser, fill forms, and verify web app workflows.
Build and ship code
I need a coding agent that can understand a repository, edit code, and review pull requests.
Search private knowledge
I need my agent to build a RAG workflow over documents and retrieve reliable context.
Workflow fit
Operate and verify web apps
A workflow for agents that navigate products, fill forms, take screenshots, and verify real user flows across web applications.
Inspect, patch, and verify code
A workflow for software agents that inspect repositories, review pull requests, generate tests, and turn findings into shippable patches.
Ingest, retrieve, and cite
A workflow for document-heavy agents that ingest files, create searchable knowledge, retrieve relevant context, and answer with grounded sources.
Alternative shortlist
Similar skills that may fit this task.
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Connect agents to hundreds of workflow automations
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Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at
--- name: gsap-plugins description: Official GSAP skill for GSAP plugins — registration, ScrollToPlugin, ScrollSmoother, Flip, Draggable, Inertia, Observer, SplitText, ScrambleText, SVG and physics plugins, CustomEase, EasePack, CustomWiggle, CustomBounce, GSDevTools. Use when the user asks about a GSAP plugin, scroll-to, flip animations, draggable, SVG drawing, or plugin registration. license: MIT ---
# GSAP Plugins
## When to Use This Skill
Apply when using or reviewing code that uses GSAP plugins: registering plugins, scroll-to, flip/FLIP animations, draggable elements, SVG (DrawSVG, MorphSVG, MotionPath), text (SplitText, ScrambleText), physics, easing plugins (CustomEase, EasePack, CustomWiggle, CustomBounce), or GSDevTools. ScrollTrigger has its own skill (gsap-scrolltrigger).
**Related skills:** For core tweens use **gsap-core**; for ScrollTrigger use **gsap-scrolltrigger**; for React use **gsap-react**.
## Registering Plugins
Register each plugin once so GSAP (and bundlers) know to include it. Use **gsap.registerPlugin()** with every plugin used in the project:
```javascript import gsap from "gsap"; import { ScrollToPlugin } from "gsap/ScrollToPlugin"; import { Flip } from "gsap/Flip"; import { Draggable } from "gsap/Draggable";
gsap.registerPlugin(ScrollToPlugin, Flip, Draggable); ```
- ✅ Register before using the plugin in any tween or API call. - ✅ In React, register at top level or once in the app (e.g. before first useGSAP); do not register inside a component that re-renders. useGSAP is a plugin that needs to be registered before use.
## Scroll
### ScrollToPlugin
Animates scroll position (window or a scrollable element). Use for “scroll to element” or “scroll to position” without ScrollTrigger.
```javascript gsap.registerPlugin(ScrollToPlugin);
gsap.to(window, { duration: 1, scrollTo: { y: 500 } }); gsap.to(window, { duration: 1, scrollTo: { y: "#section", offsetY: 50 } }); gsap.to(scrollContainer, { duration: 1, scrollTo: { x: "max" } }); ```
**ScrollToPlugin — key config (scrollTo object):**
| Option | Description | |--------|-------------| | `x`, `y` | Target scroll position (number), or `"max"` for maximum | | `element` | Selector or element to scroll to (for scroll-into-view) | | `offsetX`, `offsetY` | Offset in pixels from the target position |
### ScrollSmoother
Smooth scroll wrapper (smooths native scroll). Requires ScrollTrigger and a specific DOM structure (content wrapper + smooth wrapper). Use when smooth, momentum-style scroll is needed. See GSAP docs for setup; register after ScrollTrigger. DOM structure would look like:
```html <body> <div id="smooth-wrapper"> <div id="smooth-content"> <!--- ALL YOUR CONTENT HERE ---> </div> </div> <!-- position: fixed elements can go outside ---> </body> ```
## DOM / UI
### Flip
Capture state with `Flip.getState()`, then apply changes (e.g. layout or class changes), then use `Flip.from()` to animate from the previous state to the new state (FLIP: First, Last, Invert, Play). Use when animating between two layout states (lists, grids, expanded/collapsed).
```javascript gsap.registerPlugin(Flip);
const state = Flip.getState(".item"); // change DOM (reorder, add/remove, change classes) Flip.from(state, { duration: 0.5, ease: "power2.inOut" }); ```
**Flip — key config (Flip.from vars):**
| Option | Description | |--------|-------------| | `absolute` | Use `position: absolute` during the flip (default: `false`) | | `nested` | When true, only the first level of children is measured (better for nested transforms) | | `scale` | When true, scale elements to fit (avoids stretch); default `true` | | `simple` | When true, only position/scale are animated (faster, less accurate) | | `duration`, `ease` | Standard tween options |
#### More information
https://gsap.com/docs/v3/Plugins/Flip
### Draggable
Makes elements draggable, spinnable, or throwable with mouse/touch. Use for sliders, cards, reorderable lists, or any drag interaction.
```javascript gsap.registerPlugin(Draggable, InertiaPlugin);
Draggable.create(".box", { type: "x,y", bounds: "#container", inertia: true }); Draggable.create(".knob", { type: "rotation" }); ```
**Draggable — key config options:**
| Option | Description | |--------|-------------| | `type` | `"x"`, `"y"`, `"x,y"`, `"rotation"`, `"scroll"` | | `bounds` | Element, selector, or `{ minX, maxX, minY, maxY }` to constrain drag | | `inertia` | `true` to enable throw/momentum (requires InertiaPlugin) | | `edgeResistance` | 0–1; resistance when dragging past bounds | | `cursor` | CSS cursor during drag | | `onDragStart`, `onDrag`, `onDragEnd` | Callbacks; receive event and target | | `onThrowUpdate`, `onThrowComplete` | Callbacks when inertia is active |
### Inertia (InertiaPlugin)
Works with Draggable for momentum after release, or track the inertia/velocity of any property of any object so that it can then seamlessly glide to a stop using a simple tween. Register with Draggable when using `inertia: true`:
```javascript gsap.registerPlugin(Draggable, InertiaPlugin); Draggable.create(".box", { type: "x,y", inertia: true }); ```
Or track velocity of a property: ```javascript InertiaPlugin.track(".box", "x"); ```
Then use `"auto"` to continue the current velocity and glide to a stop:
```javascript gsap.to(obj, { inertia: { x: "auto" } }); ```
### Observer
Normalizes pointer and scroll input across devices. Use for swipe, scroll direction, or custom gesture logic without tying directly to scroll position like ScrollTrigger.
```javascript gsap.registerPlugin(Observer);
Observer.create({ target: "#area", onUp: () => {}, onDown: () => {}, onLeft: () => {}, onRight: () => {}, tolerance: 10 }); ```
**Observer — key config options:**
| Option | Description | |--------|-------------| | `target` | Element or selector to observe | | `onUp`, `onDown`, `onLeft`, `onRight` | Callbacks when swipe/scroll passes tolerance in that direction | | `tolerance` | Pixels before direction is detected; default 10 | | `type` | `"touch"`, `"pointer"`, or `"wheel"` (default: `"touch,pointer"`) |
## Text
### SplitText
Splits an element’s text into characters, words, and/or lines (each in its own element) for staggered or per-unit animation. Use when animating text character-by-character, word-by-word, or line-by-line. Returns an instance with **chars**, **words**, **lines** (and **masks** when `mask` is set). Restore original markup with **revert()** or let **gsap.context()** revert. Integrates with **gsap.context()**, **matchMedia()**, and **useGSAP()**. API: **SplitText.create(target, vars)** (target = selector, element, or array).
```javascript gsap.registerPlugin(SplitText);
const split = SplitText.create(".heading", { type: "words, chars" }); gsap.from(split.chars, { opacity: 0, y: 20, stagger: 0.03, duration: 0.4 }); // later: split.revert() or let gsap.context() cleanup revert ```
With **onSplit()** (v3.13.0+), animations run on each split and on re-split when **autoSplit** is used; returning a tween/timeline from **onSplit()** lets SplitText clean up and sync progress on re-split:
```javascript SplitText.create(".split", { type: "lines", autoSplit: true, onSplit(self) { return gsap.from(self.lines, { y: 100, opacity: 0, stagger: 0.05, duration: 0.5 }); } }); ```
**SplitText — key config (SplitText.create vars):**
| Option | Description | |--------|-------------| | **type** | Comma-separated: `"chars"`, `"words"`, `"lines"`. Default `"chars,words,lines"`. Only split what is needed (e.g. `"words, chars"` if not using lines) for performance. Avoid chars-only without words/lines or use **smartWrap: true** to prevent odd line breaks. | | **charsClass**, **wordsClass**, **linesClass** | CSS class on each split element. Append `"++"` to add an incremented class (e.g. `linesClass: "line++"` → `line1`, `line2`, …). | | **aria** | `"auto"` (default), `"hidden"`, or `"none"`. Accessibility: `"auto"` adds `aria-label` on the split element and `aria-hidden` on line/word/char elements so screen readers read the label; `"hidden"` hides all from readers; `"none"` leaves aria unchanged. Use `"none"` plus a screen-reader-only duplicate if nested links/semantics must be exposed. | | **autoSplit** | When `true`, reverts and re-splits when fonts finish loading or when the element width changes (and lines are split), avoiding wrong line breaks. **Animations must be created inside onSplit()** so they target the newly split elements; **return** the animation from **onSplit()** for automatic cleanup and time-sync on re-split. | | **onSplit(self)** | Callback when split completes (and on each re-split if **autoSplit** is `true`). Receives the SplitText instance. Returning a GSAP tween or timeline enables automatic revert/sync of that animation when re-splitting. | | **mask** | `"lines"`, `"words"`, or `"chars"`. Wraps each unit in an extra element with `overflow: clip` for mask/reveal effects. Only one type; access wrappers on the instance’s **masks** array (or use class `-mask` if a class is set). | | **tag** | Wrapper element tag; default `"div"`. Use `"span"` for inline (note: transforms like rotation/scale may not render on inline elements in some browsers). | | **deepSlice** | When `true` (default), nested elements (e.g. `<strong>`) that span multiple lines are subdivided so lines don’t stretch vertically. Only applies when splitting lines. | | **ignore** | Selector or element(s) to leave unsplit (e.g. `ignore: "sup"`). | | **smartWrap** | When splitting **chars** only, wraps words in a `white-space: nowrap` span to avoid mid-word line breaks. Ignored if words or lines are split. Default `false`. | | **wordDelimiter** | Word boundary: string (default `" "`), RegExp, or `{ delimiter: RegExp, replaceWith: string }` for custom splitting (e.g. zero-width joiner for hashtags, or non-Latin). | | **prepareText(text, parent)** | Function that receives raw text and parent element; return modified text before splitting (e.g. to insert break markers for languages without spaces). | | **propIndex** | When `true`, adds a CSS variable with index on each split element (e.g. `--word: 1`, `--char: 2`). | | **reduceWhiteSpace** | Collapse consecutive spaces; default `true`. From v3.13.0 also honors line breaks and can insert `<br>` for `<pre>`. | | **onRevert** | Callback when the instance is reverted. |
**Tips:** Split only what is animated (e.g. skip chars if only animating words). For custom fonts, split after they load (e.g. `document.fonts.ready.then(...)`) or use **autoSplit: true** with **onSplit()**. To avoid kerning shift when splitting chars, use CSS `font-kerning: none; text-rendering: optimizeSpeed;`. Avoid `text-wrap: balance`; it can interfere with splitting. SplitText does not support SVG `<text>`.
**Learn more:** [SplitText](https://gsap.com/docs/v3/Plugins/SplitText/)
### ScrambleText
Animates text with a scramble/glitch effect. Use when revealing or transitioning text with a scramble.
```javascript gsap.registerPlugin(ScrambleTextPlugin);
gsap.to(".text", { duration: 1, scrambleText: { text: "New message", chars: "01", revealDelay: 0.5 } }); ```
## SVG
### DrawSVG (DrawSVGPlugin)
Reveals or hides the stroke of SVG elements by animating `stroke-dashoffset` / `stroke-dasharray`. Works on `<path>`, `<line>`, `<polyline>`, `<polygon>`, `<rect>`, `<ellipse>`. Use when “drawing” or “erasing” strokes.
**drawSVG value:** Describes the **visible segment** of the stroke along the path (start and end positions), not “animate from A to B over time.” Format: `"start end"` in percent or length. Examples: `"0% 100%"` = full stroke; `"20% 80%"` = stroke only between 20% and 80% (gaps at both ends). The tween animates from the element’s **current** segment to the **target** segment — e.g. `gsap.to("#path", { drawSVG: "0% 100%" })` goes from whatever it is now to full stroke. Single value (e.g. `0`, `"100%"`) means start is 0: `"100%"` is equivalent to `"0% 10
Source provenance
Decision snapshot
56,210 GitHub stars
Audit
Install and adoption review
Agent-proven evidence
Outcome reports after resolve, review, install, and one narrow run.
No agent outcome data yet. The first agent run can report success, setup needs, risk blocks, failure, or not-relevant through /api/agent/outcome.
Install
Free and open source. Review the report before installing into production agents.
Growth loop
Scenario-led draft for gsap-plugins, ready for a manual X post.
A practical pick for source-backed research: gsap-plugins: Official GSAP skill for GSAP plugins — registration, ScrollToPlugin, ScrollSmoother, Flip, Draggable, Inertia, Observer, Sp... 56.2K stars https://www.openagentskill.com/skills/calesthio-gsap-plugins?ref=x
Listing + install path for gsap-plugins: https://www.openagentskill.com/skills/calesthio-gsap-plugins?ref=x Install: npx skills add calesthio/OpenMontage --skill gsap-plugins
Listing source
This listing was indexed from public sources and is not marked official until a maintainer claim is approved.
Attribution links to the public repository or creator profile. Creators can claim the listing to update ownership signals.
Claim this skillOwner claim
This Registry indexed listing is attributed to calesthio but is not marked official yet. Claim it to add a verified owner signal and make future launch, install, and audit updates easier to trust.
Creator backlink kit
Show the canonical listing, current trust and audit signals, and real Agent-Proven evidence where developers evaluate the repository.
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[](https://www.openagentskill.com/skills/calesthio-gsap-plugins?ref=github&utm_source=github&utm_medium=referral&utm_campaign=creator_badge)
[](https://www.openagentskill.com/skills/calesthio-gsap-plugins/audit)
[](https://www.openagentskill.com/skills/calesthio-gsap-plugins?ref=github&utm_source=github&utm_medium=referral&utm_campaign=creator_badge)calesthio
@calesthio
Share whether this skill looks useful for your agent workflow. Aggregated feedback improves rankings over time.
Review then install
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24.7K StarsReview then install
Install targets
Codex install prompt
Install the "gsap-plugins" agent skill from https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/gsap-plugins. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: Official GSAP skill for GSAP plugins — registration, ScrollToPlugin, ScrollSmoother, Flip, Draggable, Inertia, Observer, SplitText, ScrambleText, SVG and physics plugins, CustomEase, EasePack, CustomWiggle, CustomBounce, GSDevTools. Use when the user asks about a GSAP plugin, scroll-to, flip animations, draggable, SVG drawing, or plugin registration. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {"event_id":"install_<unique-id>","skill_slug":"calesthio-gsap-plugins","task":"Install gsap-plugins","agent":"codex","outcome":"success","install_used":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.Supply asset profile
Code review, repo analysis, testing, CI, GitHub, DevOps, and developer workflow skills.
Scenario
Coding agents
I need a coding agent that can understand a repository, edit code, and review pull requests.
Agent fit
Claude Code + Cursor + Browser agents
Codex, Claude Code, Cursor, CLI, or custom agents.
Install
Ready
npx skills add calesthio/OpenMontage --skill gsap-plugins
Maintenance
fresh
16d since push
Risk
Needs review
Financial research output is not financial advice; require human review before any live investment decision
GitHub quality
56K
94/100 Quality · 85/100 Trust
Coverage tags
Review notes
Financial research output is not financial advice; require human review before any live investment decision · Financial research output is not financial advice; require human review before any live investment decision.
Agent adoption scorecard
These scores combine public repository metadata, OpenAgentSkill review signals, maintenance freshness, and install readiness. They are a shortlist signal, not a replacement for human review.
Quality
ExcellentHigh-confidence pick with strong adoption and healthy maintenance signals.
Trust
Review then installGood shortlist signal, but the agent should review audit notes, install policy, and outcome evidence before running it.
Audit
Needs reviewA machine-readable review of install readiness, security metadata, maintenance, and adoption risk.
OpenAgentSkill Trust Score v5
Use as the primary candidate after human or sandbox review.
Stars
56K GitHub stars
Repo activity
56K stars, 7.0K forks
Maintenance
16d since push
License
MIT
Install
npx skills add calesthio/OpenMontage --skill gsap-plugins
Install safety
Agent-readable metadata
Use this block or the embedded JSON to decide whether an agent should install this skill, choose an alternative, or ask for human review first.
Suited tasks
Suited agents
Install decision
Trust and risk
Outcome loop
Install command
npx skills add calesthio/OpenMontage --skill gsap-pluginsDo not use when
Agent safety v2
Usable candidate, but the agent should surface permission and audit notes before installation.
Require human approval before installing into a real workspace.
medium
Skill likely fetches remote pages, APIs, repositories, or external services.
medium
Skill may read or write project files, documents, generated artifacts, or local workspace state.
Agent resolve plan
The Resolve API returns the selected skill, alternatives, safety policy, audit notes, install target, and copy-paste prompt an agent can follow without scraping this page.
Open JSON
/api/agent/resolve?task=Use%20gsap-plugins%20for%20an%20agent%20workflow&agent=codex&max_risk=medium
Resolve text
/api/agent/resolve?task=Use%20gsap-plugins%20for%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text
Install handoff
/api/skills/calesthio-gsap-plugins/install
Agent should check
Copy prompt
Task: Use gsap-plugins in this workspace.
Resolve first: https://www.openagentskill.com/api/agent/resolve?task=Use%20gsap-plugins%20for%20an%20agent%20workflow&agent=codex&max_risk=medium
Review install handoff: https://www.openagentskill.com/api/skills/calesthio-gsap-plugins/install
Install command: npx skills add calesthio/OpenMontage --skill gsap-plugins
Before running it, summarize audit warnings, required permissions, and the fallback skill if install is risky.Agent handoff
Use the public install endpoint to fetch the command, safety checklist, target prompts, and canonical links for this skill.
Install handoff
/api/skills/calesthio-gsap-plugins/install
LLM text format
/api/skills/calesthio-gsap-plugins/install?format=text
Find alternatives
/api/skills/search?q=gsap-plugins&limit=3
Agent prompt
Use gsap-plugins for this task. Review https://www.openagentskill.com/api/skills/calesthio-gsap-plugins/install, then install with: npx skills add calesthio/OpenMontage --skill gsap-pluginsRegistry metadata
This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.
Manifest
/api/registry/manifest/calesthio-gsap-plugins
LLM text
/api/registry/manifest/calesthio-gsap-plugins?format=text
Install alias
/api/registry/install/calesthio-gsap-plugins
Recommend
/api/registry/recommend?task=Use%20gsap-plugins%20in%20an%20agent%20workflow&limit=3
Agent fit
Browser automation
Use-case tags
Platforms
Claude Code, Cursor, Browser agents
Audit report
A machine-readable review of install readiness, security metadata, maintenance, and adoption risk.
Agent decision cockpit
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Role in stack
Primary pick
Primary fit
Browser automation
Trust label
Production-ready
Install path
Command ready
Use when
Evidence
review first
Implementation path
Trust profile
Good shortlist signal, but the agent should review audit notes, install policy, and outcome evidence before running it.
GitHub adoption
PASS56K GitHub stars
Stars/forks activity
PASS56K stars, 7.0K forks; issue activity unavailable in current metadata
Recent maintenance
PASS16d since push
License clarity
PASSMIT
Good signals
Review before install
Recommended action
Use as the primary candidate after human or sandbox review.
Quality profile
High-confidence pick with strong adoption and healthy maintenance signals.
Workflow fit
Operate web apps
I need my agent to control a browser, fill forms, and verify web app workflows.
Build and ship code
I need a coding agent that can understand a repository, edit code, and review pull requests.
Search private knowledge
I need my agent to build a RAG workflow over documents and retrieve reliable context.
Workflow fit
Operate and verify web apps
A workflow for agents that navigate products, fill forms, take screenshots, and verify real user flows across web applications.
Inspect, patch, and verify code
A workflow for software agents that inspect repositories, review pull requests, generate tests, and turn findings into shippable patches.
Ingest, retrieve, and cite
A workflow for document-heavy agents that ingest files, create searchable knowledge, retrieve relevant context, and answer with grounded sources.
Alternative shortlist
Similar skills that may fit this task.
Run multimodal agents that operate desktop interfaces
Connect agents to hundreds of workflow automations
利用AI大模型,一键生成高清短视频 Generate short videos with one click using AI LLM.
Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at
--- name: gsap-plugins description: Official GSAP skill for GSAP plugins — registration, ScrollToPlugin, ScrollSmoother, Flip, Draggable, Inertia, Observer, SplitText, ScrambleText, SVG and physics plugins, CustomEase, EasePack, CustomWiggle, CustomBounce, GSDevTools. Use when the user asks about a GSAP plugin, scroll-to, flip animations, draggable, SVG drawing, or plugin registration. license: MIT ---
# GSAP Plugins
## When to Use This Skill
Apply when using or reviewing code that uses GSAP plugins: registering plugins, scroll-to, flip/FLIP animations, draggable elements, SVG (DrawSVG, MorphSVG, MotionPath), text (SplitText, ScrambleText), physics, easing plugins (CustomEase, EasePack, CustomWiggle, CustomBounce), or GSDevTools. ScrollTrigger has its own skill (gsap-scrolltrigger).
**Related skills:** For core tweens use **gsap-core**; for ScrollTrigger use **gsap-scrolltrigger**; for React use **gsap-react**.
## Registering Plugins
Register each plugin once so GSAP (and bundlers) know to include it. Use **gsap.registerPlugin()** with every plugin used in the project:
```javascript import gsap from "gsap"; import { ScrollToPlugin } from "gsap/ScrollToPlugin"; import { Flip } from "gsap/Flip"; import { Draggable } from "gsap/Draggable";
gsap.registerPlugin(ScrollToPlugin, Flip, Draggable); ```
- ✅ Register before using the plugin in any tween or API call. - ✅ In React, register at top level or once in the app (e.g. before first useGSAP); do not register inside a component that re-renders. useGSAP is a plugin that needs to be registered before use.
## Scroll
### ScrollToPlugin
Animates scroll position (window or a scrollable element). Use for “scroll to element” or “scroll to position” without ScrollTrigger.
```javascript gsap.registerPlugin(ScrollToPlugin);
gsap.to(window, { duration: 1, scrollTo: { y: 500 } }); gsap.to(window, { duration: 1, scrollTo: { y: "#section", offsetY: 50 } }); gsap.to(scrollContainer, { duration: 1, scrollTo: { x: "max" } }); ```
**ScrollToPlugin — key config (scrollTo object):**
| Option | Description | |--------|-------------| | `x`, `y` | Target scroll position (number), or `"max"` for maximum | | `element` | Selector or element to scroll to (for scroll-into-view) | | `offsetX`, `offsetY` | Offset in pixels from the target position |
### ScrollSmoother
Smooth scroll wrapper (smooths native scroll). Requires ScrollTrigger and a specific DOM structure (content wrapper + smooth wrapper). Use when smooth, momentum-style scroll is needed. See GSAP docs for setup; register after ScrollTrigger. DOM structure would look like:
```html <body> <div id="smooth-wrapper"> <div id="smooth-content"> <!--- ALL YOUR CONTENT HERE ---> </div> </div> <!-- position: fixed elements can go outside ---> </body> ```
## DOM / UI
### Flip
Capture state with `Flip.getState()`, then apply changes (e.g. layout or class changes), then use `Flip.from()` to animate from the previous state to the new state (FLIP: First, Last, Invert, Play). Use when animating between two layout states (lists, grids, expanded/collapsed).
```javascript gsap.registerPlugin(Flip);
const state = Flip.getState(".item"); // change DOM (reorder, add/remove, change classes) Flip.from(state, { duration: 0.5, ease: "power2.inOut" }); ```
**Flip — key config (Flip.from vars):**
| Option | Description | |--------|-------------| | `absolute` | Use `position: absolute` during the flip (default: `false`) | | `nested` | When true, only the first level of children is measured (better for nested transforms) | | `scale` | When true, scale elements to fit (avoids stretch); default `true` | | `simple` | When true, only position/scale are animated (faster, less accurate) | | `duration`, `ease` | Standard tween options |
#### More information
https://gsap.com/docs/v3/Plugins/Flip
### Draggable
Makes elements draggable, spinnable, or throwable with mouse/touch. Use for sliders, cards, reorderable lists, or any drag interaction.
```javascript gsap.registerPlugin(Draggable, InertiaPlugin);
Draggable.create(".box", { type: "x,y", bounds: "#container", inertia: true }); Draggable.create(".knob", { type: "rotation" }); ```
**Draggable — key config options:**
| Option | Description | |--------|-------------| | `type` | `"x"`, `"y"`, `"x,y"`, `"rotation"`, `"scroll"` | | `bounds` | Element, selector, or `{ minX, maxX, minY, maxY }` to constrain drag | | `inertia` | `true` to enable throw/momentum (requires InertiaPlugin) | | `edgeResistance` | 0–1; resistance when dragging past bounds | | `cursor` | CSS cursor during drag | | `onDragStart`, `onDrag`, `onDragEnd` | Callbacks; receive event and target | | `onThrowUpdate`, `onThrowComplete` | Callbacks when inertia is active |
### Inertia (InertiaPlugin)
Works with Draggable for momentum after release, or track the inertia/velocity of any property of any object so that it can then seamlessly glide to a stop using a simple tween. Register with Draggable when using `inertia: true`:
```javascript gsap.registerPlugin(Draggable, InertiaPlugin); Draggable.create(".box", { type: "x,y", inertia: true }); ```
Or track velocity of a property: ```javascript InertiaPlugin.track(".box", "x"); ```
Then use `"auto"` to continue the current velocity and glide to a stop:
```javascript gsap.to(obj, { inertia: { x: "auto" } }); ```
### Observer
Normalizes pointer and scroll input across devices. Use for swipe, scroll direction, or custom gesture logic without tying directly to scroll position like ScrollTrigger.
```javascript gsap.registerPlugin(Observer);
Observer.create({ target: "#area", onUp: () => {}, onDown: () => {}, onLeft: () => {}, onRight: () => {}, tolerance: 10 }); ```
**Observer — key config options:**
| Option | Description | |--------|-------------| | `target` | Element or selector to observe | | `onUp`, `onDown`, `onLeft`, `onRight` | Callbacks when swipe/scroll passes tolerance in that direction | | `tolerance` | Pixels before direction is detected; default 10 | | `type` | `"touch"`, `"pointer"`, or `"wheel"` (default: `"touch,pointer"`) |
## Text
### SplitText
Splits an element’s text into characters, words, and/or lines (each in its own element) for staggered or per-unit animation. Use when animating text character-by-character, word-by-word, or line-by-line. Returns an instance with **chars**, **words**, **lines** (and **masks** when `mask` is set). Restore original markup with **revert()** or let **gsap.context()** revert. Integrates with **gsap.context()**, **matchMedia()**, and **useGSAP()**. API: **SplitText.create(target, vars)** (target = selector, element, or array).
```javascript gsap.registerPlugin(SplitText);
const split = SplitText.create(".heading", { type: "words, chars" }); gsap.from(split.chars, { opacity: 0, y: 20, stagger: 0.03, duration: 0.4 }); // later: split.revert() or let gsap.context() cleanup revert ```
With **onSplit()** (v3.13.0+), animations run on each split and on re-split when **autoSplit** is used; returning a tween/timeline from **onSplit()** lets SplitText clean up and sync progress on re-split:
```javascript SplitText.create(".split", { type: "lines", autoSplit: true, onSplit(self) { return gsap.from(self.lines, { y: 100, opacity: 0, stagger: 0.05, duration: 0.5 }); } }); ```
**SplitText — key config (SplitText.create vars):**
| Option | Description | |--------|-------------| | **type** | Comma-separated: `"chars"`, `"words"`, `"lines"`. Default `"chars,words,lines"`. Only split what is needed (e.g. `"words, chars"` if not using lines) for performance. Avoid chars-only without words/lines or use **smartWrap: true** to prevent odd line breaks. | | **charsClass**, **wordsClass**, **linesClass** | CSS class on each split element. Append `"++"` to add an incremented class (e.g. `linesClass: "line++"` → `line1`, `line2`, …). | | **aria** | `"auto"` (default), `"hidden"`, or `"none"`. Accessibility: `"auto"` adds `aria-label` on the split element and `aria-hidden` on line/word/char elements so screen readers read the label; `"hidden"` hides all from readers; `"none"` leaves aria unchanged. Use `"none"` plus a screen-reader-only duplicate if nested links/semantics must be exposed. | | **autoSplit** | When `true`, reverts and re-splits when fonts finish loading or when the element width changes (and lines are split), avoiding wrong line breaks. **Animations must be created inside onSplit()** so they target the newly split elements; **return** the animation from **onSplit()** for automatic cleanup and time-sync on re-split. | | **onSplit(self)** | Callback when split completes (and on each re-split if **autoSplit** is `true`). Receives the SplitText instance. Returning a GSAP tween or timeline enables automatic revert/sync of that animation when re-splitting. | | **mask** | `"lines"`, `"words"`, or `"chars"`. Wraps each unit in an extra element with `overflow: clip` for mask/reveal effects. Only one type; access wrappers on the instance’s **masks** array (or use class `-mask` if a class is set). | | **tag** | Wrapper element tag; default `"div"`. Use `"span"` for inline (note: transforms like rotation/scale may not render on inline elements in some browsers). | | **deepSlice** | When `true` (default), nested elements (e.g. `<strong>`) that span multiple lines are subdivided so lines don’t stretch vertically. Only applies when splitting lines. | | **ignore** | Selector or element(s) to leave unsplit (e.g. `ignore: "sup"`). | | **smartWrap** | When splitting **chars** only, wraps words in a `white-space: nowrap` span to avoid mid-word line breaks. Ignored if words or lines are split. Default `false`. | | **wordDelimiter** | Word boundary: string (default `" "`), RegExp, or `{ delimiter: RegExp, replaceWith: string }` for custom splitting (e.g. zero-width joiner for hashtags, or non-Latin). | | **prepareText(text, parent)** | Function that receives raw text and parent element; return modified text before splitting (e.g. to insert break markers for languages without spaces). | | **propIndex** | When `true`, adds a CSS variable with index on each split element (e.g. `--word: 1`, `--char: 2`). | | **reduceWhiteSpace** | Collapse consecutive spaces; default `true`. From v3.13.0 also honors line breaks and can insert `<br>` for `<pre>`. | | **onRevert** | Callback when the instance is reverted. |
**Tips:** Split only what is animated (e.g. skip chars if only animating words). For custom fonts, split after they load (e.g. `document.fonts.ready.then(...)`) or use **autoSplit: true** with **onSplit()**. To avoid kerning shift when splitting chars, use CSS `font-kerning: none; text-rendering: optimizeSpeed;`. Avoid `text-wrap: balance`; it can interfere with splitting. SplitText does not support SVG `<text>`.
**Learn more:** [SplitText](https://gsap.com/docs/v3/Plugins/SplitText/)
### ScrambleText
Animates text with a scramble/glitch effect. Use when revealing or transitioning text with a scramble.
```javascript gsap.registerPlugin(ScrambleTextPlugin);
gsap.to(".text", { duration: 1, scrambleText: { text: "New message", chars: "01", revealDelay: 0.5 } }); ```
## SVG
### DrawSVG (DrawSVGPlugin)
Reveals or hides the stroke of SVG elements by animating `stroke-dashoffset` / `stroke-dasharray`. Works on `<path>`, `<line>`, `<polyline>`, `<polygon>`, `<rect>`, `<ellipse>`. Use when “drawing” or “erasing” strokes.
**drawSVG value:** Describes the **visible segment** of the stroke along the path (start and end positions), not “animate from A to B over time.” Format: `"start end"` in percent or length. Examples: `"0% 100%"` = full stroke; `"20% 80%"` = stroke only between 20% and 80% (gaps at both ends). The tween animates from the element’s **current** segment to the **target** segment — e.g. `gsap.to("#path", { drawSVG: "0% 100%" })` goes from whatever it is now to full stroke. Single value (e.g. `0`, `"100%"`) means start is 0: `"100%"` is equivalent to `"0% 10
Source provenance
Decision snapshot
56,210 GitHub stars
Audit
Install and adoption review
Agent-proven evidence
Outcome reports after resolve, review, install, and one narrow run.
No agent outcome data yet. The first agent run can report success, setup needs, risk blocks, failure, or not-relevant through /api/agent/outcome.
Install
Free and open source. Review the report before installing into production agents.
Growth loop
Scenario-led draft for gsap-plugins, ready for a manual X post.
A practical pick for source-backed research: gsap-plugins: Official GSAP skill for GSAP plugins — registration, ScrollToPlugin, ScrollSmoother, Flip, Draggable, Inertia, Observer, Sp... 56.2K stars https://www.openagentskill.com/skills/calesthio-gsap-plugins?ref=x
Listing + install path for gsap-plugins: https://www.openagentskill.com/skills/calesthio-gsap-plugins?ref=x Install: npx skills add calesthio/OpenMontage --skill gsap-plugins
Listing source
This listing was indexed from public sources and is not marked official until a maintainer claim is approved.
Attribution links to the public repository or creator profile. Creators can claim the listing to update ownership signals.
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Creator backlink kit
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Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at
24.7K StarsReview then install
Install targets
Codex install prompt
Install the "gsap-plugins" agent skill from https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/gsap-plugins. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: Official GSAP skill for GSAP plugins — registration, ScrollToPlugin, ScrollSmoother, Flip, Draggable, Inertia, Observer, SplitText, ScrambleText, SVG and physics plugins, CustomEase, EasePack, CustomWiggle, CustomBounce, GSDevTools. Use when the user asks about a GSAP plugin, scroll-to, flip animations, draggable, SVG drawing, or plugin registration. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {"event_id":"install_<unique-id>","skill_slug":"calesthio-gsap-plugins","task":"Install gsap-plugins","agent":"codex","outcome":"success","install_used":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.Supply asset profile
Code review, repo analysis, testing, CI, GitHub, DevOps, and developer workflow skills.
Scenario
Coding agents
I need a coding agent that can understand a repository, edit code, and review pull requests.
Agent fit
Claude Code + Cursor + Browser agents
Codex, Claude Code, Cursor, CLI, or custom agents.
Install
Ready
npx skills add calesthio/OpenMontage --skill gsap-plugins
Maintenance
fresh
16d since push
Risk
Needs review
Financial research output is not financial advice; require human review before any live investment decision
GitHub quality
56K
94/100 Quality · 85/100 Trust
Coverage tags
Review notes
Financial research output is not financial advice; require human review before any live investment decision · Financial research output is not financial advice; require human review before any live investment decision.
Agent adoption scorecard
These scores combine public repository metadata, OpenAgentSkill review signals, maintenance freshness, and install readiness. They are a shortlist signal, not a replacement for human review.
Quality
ExcellentHigh-confidence pick with strong adoption and healthy maintenance signals.
Trust
Review then installGood shortlist signal, but the agent should review audit notes, install policy, and outcome evidence before running it.
Audit
Needs reviewA machine-readable review of install readiness, security metadata, maintenance, and adoption risk.
OpenAgentSkill Trust Score v5
Use as the primary candidate after human or sandbox review.
Stars
56K GitHub stars
Repo activity
56K stars, 7.0K forks
Maintenance
16d since push
License
MIT
Install
npx skills add calesthio/OpenMontage --skill gsap-plugins
Install safety
Agent-readable metadata
Use this block or the embedded JSON to decide whether an agent should install this skill, choose an alternative, or ask for human review first.
Suited tasks
Suited agents
Install decision
Trust and risk
Outcome loop
Install command
npx skills add calesthio/OpenMontage --skill gsap-pluginsDo not use when
Agent safety v2
Usable candidate, but the agent should surface permission and audit notes before installation.
Require human approval before installing into a real workspace.
medium
Skill likely fetches remote pages, APIs, repositories, or external services.
medium
Skill may read or write project files, documents, generated artifacts, or local workspace state.
Agent resolve plan
The Resolve API returns the selected skill, alternatives, safety policy, audit notes, install target, and copy-paste prompt an agent can follow without scraping this page.
Open JSON
/api/agent/resolve?task=Use%20gsap-plugins%20for%20an%20agent%20workflow&agent=codex&max_risk=medium
Resolve text
/api/agent/resolve?task=Use%20gsap-plugins%20for%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text
Install handoff
/api/skills/calesthio-gsap-plugins/install
Agent should check
Copy prompt
Task: Use gsap-plugins in this workspace.
Resolve first: https://www.openagentskill.com/api/agent/resolve?task=Use%20gsap-plugins%20for%20an%20agent%20workflow&agent=codex&max_risk=medium
Review install handoff: https://www.openagentskill.com/api/skills/calesthio-gsap-plugins/install
Install command: npx skills add calesthio/OpenMontage --skill gsap-plugins
Before running it, summarize audit warnings, required permissions, and the fallback skill if install is risky.Agent handoff
Use the public install endpoint to fetch the command, safety checklist, target prompts, and canonical links for this skill.
Install handoff
/api/skills/calesthio-gsap-plugins/install
LLM text format
/api/skills/calesthio-gsap-plugins/install?format=text
Find alternatives
/api/skills/search?q=gsap-plugins&limit=3
Agent prompt
Use gsap-plugins for this task. Review https://www.openagentskill.com/api/skills/calesthio-gsap-plugins/install, then install with: npx skills add calesthio/OpenMontage --skill gsap-pluginsRegistry metadata
This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.
Manifest
/api/registry/manifest/calesthio-gsap-plugins
LLM text
/api/registry/manifest/calesthio-gsap-plugins?format=text
Install alias
/api/registry/install/calesthio-gsap-plugins
Recommend
/api/registry/recommend?task=Use%20gsap-plugins%20in%20an%20agent%20workflow&limit=3
Agent fit
Browser automation
Use-case tags
Platforms
Claude Code, Cursor, Browser agents
Audit report
A machine-readable review of install readiness, security metadata, maintenance, and adoption risk.
Agent decision cockpit
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Role in stack
Primary pick
Primary fit
Browser automation
Trust label
Production-ready
Install path
Command ready
Use when
Evidence
review first
Implementation path
Trust profile
Good shortlist signal, but the agent should review audit notes, install policy, and outcome evidence before running it.
GitHub adoption
PASS56K GitHub stars
Stars/forks activity
PASS56K stars, 7.0K forks; issue activity unavailable in current metadata
Recent maintenance
PASS16d since push
License clarity
PASSMIT
Good signals
Review before install
Recommended action
Use as the primary candidate after human or sandbox review.
Quality profile
High-confidence pick with strong adoption and healthy maintenance signals.
Workflow fit
Operate web apps
I need my agent to control a browser, fill forms, and verify web app workflows.
Build and ship code
I need a coding agent that can understand a repository, edit code, and review pull requests.
Search private knowledge
I need my agent to build a RAG workflow over documents and retrieve reliable context.
Workflow fit
Operate and verify web apps
A workflow for agents that navigate products, fill forms, take screenshots, and verify real user flows across web applications.
Inspect, patch, and verify code
A workflow for software agents that inspect repositories, review pull requests, generate tests, and turn findings into shippable patches.
Ingest, retrieve, and cite
A workflow for document-heavy agents that ingest files, create searchable knowledge, retrieve relevant context, and answer with grounded sources.
Alternative shortlist
Similar skills that may fit this task.
Run multimodal agents that operate desktop interfaces
Connect agents to hundreds of workflow automations
利用AI大模型,一键生成高清短视频 Generate short videos with one click using AI LLM.
Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at
--- name: gsap-plugins description: Official GSAP skill for GSAP plugins — registration, ScrollToPlugin, ScrollSmoother, Flip, Draggable, Inertia, Observer, SplitText, ScrambleText, SVG and physics plugins, CustomEase, EasePack, CustomWiggle, CustomBounce, GSDevTools. Use when the user asks about a GSAP plugin, scroll-to, flip animations, draggable, SVG drawing, or plugin registration. license: MIT ---
# GSAP Plugins
## When to Use This Skill
Apply when using or reviewing code that uses GSAP plugins: registering plugins, scroll-to, flip/FLIP animations, draggable elements, SVG (DrawSVG, MorphSVG, MotionPath), text (SplitText, ScrambleText), physics, easing plugins (CustomEase, EasePack, CustomWiggle, CustomBounce), or GSDevTools. ScrollTrigger has its own skill (gsap-scrolltrigger).
**Related skills:** For core tweens use **gsap-core**; for ScrollTrigger use **gsap-scrolltrigger**; for React use **gsap-react**.
## Registering Plugins
Register each plugin once so GSAP (and bundlers) know to include it. Use **gsap.registerPlugin()** with every plugin used in the project:
```javascript import gsap from "gsap"; import { ScrollToPlugin } from "gsap/ScrollToPlugin"; import { Flip } from "gsap/Flip"; import { Draggable } from "gsap/Draggable";
gsap.registerPlugin(ScrollToPlugin, Flip, Draggable); ```
- ✅ Register before using the plugin in any tween or API call. - ✅ In React, register at top level or once in the app (e.g. before first useGSAP); do not register inside a component that re-renders. useGSAP is a plugin that needs to be registered before use.
## Scroll
### ScrollToPlugin
Animates scroll position (window or a scrollable element). Use for “scroll to element” or “scroll to position” without ScrollTrigger.
```javascript gsap.registerPlugin(ScrollToPlugin);
gsap.to(window, { duration: 1, scrollTo: { y: 500 } }); gsap.to(window, { duration: 1, scrollTo: { y: "#section", offsetY: 50 } }); gsap.to(scrollContainer, { duration: 1, scrollTo: { x: "max" } }); ```
**ScrollToPlugin — key config (scrollTo object):**
| Option | Description | |--------|-------------| | `x`, `y` | Target scroll position (number), or `"max"` for maximum | | `element` | Selector or element to scroll to (for scroll-into-view) | | `offsetX`, `offsetY` | Offset in pixels from the target position |
### ScrollSmoother
Smooth scroll wrapper (smooths native scroll). Requires ScrollTrigger and a specific DOM structure (content wrapper + smooth wrapper). Use when smooth, momentum-style scroll is needed. See GSAP docs for setup; register after ScrollTrigger. DOM structure would look like:
```html <body> <div id="smooth-wrapper"> <div id="smooth-content"> <!--- ALL YOUR CONTENT HERE ---> </div> </div> <!-- position: fixed elements can go outside ---> </body> ```
## DOM / UI
### Flip
Capture state with `Flip.getState()`, then apply changes (e.g. layout or class changes), then use `Flip.from()` to animate from the previous state to the new state (FLIP: First, Last, Invert, Play). Use when animating between two layout states (lists, grids, expanded/collapsed).
```javascript gsap.registerPlugin(Flip);
const state = Flip.getState(".item"); // change DOM (reorder, add/remove, change classes) Flip.from(state, { duration: 0.5, ease: "power2.inOut" }); ```
**Flip — key config (Flip.from vars):**
| Option | Description | |--------|-------------| | `absolute` | Use `position: absolute` during the flip (default: `false`) | | `nested` | When true, only the first level of children is measured (better for nested transforms) | | `scale` | When true, scale elements to fit (avoids stretch); default `true` | | `simple` | When true, only position/scale are animated (faster, less accurate) | | `duration`, `ease` | Standard tween options |
#### More information
https://gsap.com/docs/v3/Plugins/Flip
### Draggable
Makes elements draggable, spinnable, or throwable with mouse/touch. Use for sliders, cards, reorderable lists, or any drag interaction.
```javascript gsap.registerPlugin(Draggable, InertiaPlugin);
Draggable.create(".box", { type: "x,y", bounds: "#container", inertia: true }); Draggable.create(".knob", { type: "rotation" }); ```
**Draggable — key config options:**
| Option | Description | |--------|-------------| | `type` | `"x"`, `"y"`, `"x,y"`, `"rotation"`, `"scroll"` | | `bounds` | Element, selector, or `{ minX, maxX, minY, maxY }` to constrain drag | | `inertia` | `true` to enable throw/momentum (requires InertiaPlugin) | | `edgeResistance` | 0–1; resistance when dragging past bounds | | `cursor` | CSS cursor during drag | | `onDragStart`, `onDrag`, `onDragEnd` | Callbacks; receive event and target | | `onThrowUpdate`, `onThrowComplete` | Callbacks when inertia is active |
### Inertia (InertiaPlugin)
Works with Draggable for momentum after release, or track the inertia/velocity of any property of any object so that it can then seamlessly glide to a stop using a simple tween. Register with Draggable when using `inertia: true`:
```javascript gsap.registerPlugin(Draggable, InertiaPlugin); Draggable.create(".box", { type: "x,y", inertia: true }); ```
Or track velocity of a property: ```javascript InertiaPlugin.track(".box", "x"); ```
Then use `"auto"` to continue the current velocity and glide to a stop:
```javascript gsap.to(obj, { inertia: { x: "auto" } }); ```
### Observer
Normalizes pointer and scroll input across devices. Use for swipe, scroll direction, or custom gesture logic without tying directly to scroll position like ScrollTrigger.
```javascript gsap.registerPlugin(Observer);
Observer.create({ target: "#area", onUp: () => {}, onDown: () => {}, onLeft: () => {}, onRight: () => {}, tolerance: 10 }); ```
**Observer — key config options:**
| Option | Description | |--------|-------------| | `target` | Element or selector to observe | | `onUp`, `onDown`, `onLeft`, `onRight` | Callbacks when swipe/scroll passes tolerance in that direction | | `tolerance` | Pixels before direction is detected; default 10 | | `type` | `"touch"`, `"pointer"`, or `"wheel"` (default: `"touch,pointer"`) |
## Text
### SplitText
Splits an element’s text into characters, words, and/or lines (each in its own element) for staggered or per-unit animation. Use when animating text character-by-character, word-by-word, or line-by-line. Returns an instance with **chars**, **words**, **lines** (and **masks** when `mask` is set). Restore original markup with **revert()** or let **gsap.context()** revert. Integrates with **gsap.context()**, **matchMedia()**, and **useGSAP()**. API: **SplitText.create(target, vars)** (target = selector, element, or array).
```javascript gsap.registerPlugin(SplitText);
const split = SplitText.create(".heading", { type: "words, chars" }); gsap.from(split.chars, { opacity: 0, y: 20, stagger: 0.03, duration: 0.4 }); // later: split.revert() or let gsap.context() cleanup revert ```
With **onSplit()** (v3.13.0+), animations run on each split and on re-split when **autoSplit** is used; returning a tween/timeline from **onSplit()** lets SplitText clean up and sync progress on re-split:
```javascript SplitText.create(".split", { type: "lines", autoSplit: true, onSplit(self) { return gsap.from(self.lines, { y: 100, opacity: 0, stagger: 0.05, duration: 0.5 }); } }); ```
**SplitText — key config (SplitText.create vars):**
| Option | Description | |--------|-------------| | **type** | Comma-separated: `"chars"`, `"words"`, `"lines"`. Default `"chars,words,lines"`. Only split what is needed (e.g. `"words, chars"` if not using lines) for performance. Avoid chars-only without words/lines or use **smartWrap: true** to prevent odd line breaks. | | **charsClass**, **wordsClass**, **linesClass** | CSS class on each split element. Append `"++"` to add an incremented class (e.g. `linesClass: "line++"` → `line1`, `line2`, …). | | **aria** | `"auto"` (default), `"hidden"`, or `"none"`. Accessibility: `"auto"` adds `aria-label` on the split element and `aria-hidden` on line/word/char elements so screen readers read the label; `"hidden"` hides all from readers; `"none"` leaves aria unchanged. Use `"none"` plus a screen-reader-only duplicate if nested links/semantics must be exposed. | | **autoSplit** | When `true`, reverts and re-splits when fonts finish loading or when the element width changes (and lines are split), avoiding wrong line breaks. **Animations must be created inside onSplit()** so they target the newly split elements; **return** the animation from **onSplit()** for automatic cleanup and time-sync on re-split. | | **onSplit(self)** | Callback when split completes (and on each re-split if **autoSplit** is `true`). Receives the SplitText instance. Returning a GSAP tween or timeline enables automatic revert/sync of that animation when re-splitting. | | **mask** | `"lines"`, `"words"`, or `"chars"`. Wraps each unit in an extra element with `overflow: clip` for mask/reveal effects. Only one type; access wrappers on the instance’s **masks** array (or use class `-mask` if a class is set). | | **tag** | Wrapper element tag; default `"div"`. Use `"span"` for inline (note: transforms like rotation/scale may not render on inline elements in some browsers). | | **deepSlice** | When `true` (default), nested elements (e.g. `<strong>`) that span multiple lines are subdivided so lines don’t stretch vertically. Only applies when splitting lines. | | **ignore** | Selector or element(s) to leave unsplit (e.g. `ignore: "sup"`). | | **smartWrap** | When splitting **chars** only, wraps words in a `white-space: nowrap` span to avoid mid-word line breaks. Ignored if words or lines are split. Default `false`. | | **wordDelimiter** | Word boundary: string (default `" "`), RegExp, or `{ delimiter: RegExp, replaceWith: string }` for custom splitting (e.g. zero-width joiner for hashtags, or non-Latin). | | **prepareText(text, parent)** | Function that receives raw text and parent element; return modified text before splitting (e.g. to insert break markers for languages without spaces). | | **propIndex** | When `true`, adds a CSS variable with index on each split element (e.g. `--word: 1`, `--char: 2`). | | **reduceWhiteSpace** | Collapse consecutive spaces; default `true`. From v3.13.0 also honors line breaks and can insert `<br>` for `<pre>`. | | **onRevert** | Callback when the instance is reverted. |
**Tips:** Split only what is animated (e.g. skip chars if only animating words). For custom fonts, split after they load (e.g. `document.fonts.ready.then(...)`) or use **autoSplit: true** with **onSplit()**. To avoid kerning shift when splitting chars, use CSS `font-kerning: none; text-rendering: optimizeSpeed;`. Avoid `text-wrap: balance`; it can interfere with splitting. SplitText does not support SVG `<text>`.
**Learn more:** [SplitText](https://gsap.com/docs/v3/Plugins/SplitText/)
### ScrambleText
Animates text with a scramble/glitch effect. Use when revealing or transitioning text with a scramble.
```javascript gsap.registerPlugin(ScrambleTextPlugin);
gsap.to(".text", { duration: 1, scrambleText: { text: "New message", chars: "01", revealDelay: 0.5 } }); ```
## SVG
### DrawSVG (DrawSVGPlugin)
Reveals or hides the stroke of SVG elements by animating `stroke-dashoffset` / `stroke-dasharray`. Works on `<path>`, `<line>`, `<polyline>`, `<polygon>`, `<rect>`, `<ellipse>`. Use when “drawing” or “erasing” strokes.
**drawSVG value:** Describes the **visible segment** of the stroke along the path (start and end positions), not “animate from A to B over time.” Format: `"start end"` in percent or length. Examples: `"0% 100%"` = full stroke; `"20% 80%"` = stroke only between 20% and 80% (gaps at both ends). The tween animates from the element’s **current** segment to the **target** segment — e.g. `gsap.to("#path", { drawSVG: "0% 100%" })` goes from whatever it is now to full stroke. Single value (e.g. `0`, `"100%"`) means start is 0: `"100%"` is equivalent to `"0% 10
Source provenance
Decision snapshot
56,210 GitHub stars
Audit
Install and adoption review
Agent-proven evidence
Outcome reports after resolve, review, install, and one narrow run.
No agent outcome data yet. The first agent run can report success, setup needs, risk blocks, failure, or not-relevant through /api/agent/outcome.
Install
Free and open source. Review the report before installing into production agents.
Growth loop
Scenario-led draft for gsap-plugins, ready for a manual X post.
A practical pick for source-backed research: gsap-plugins: Official GSAP skill for GSAP plugins — registration, ScrollToPlugin, ScrollSmoother, Flip, Draggable, Inertia, Observer, Sp... 56.2K stars https://www.openagentskill.com/skills/calesthio-gsap-plugins?ref=x
Listing + install path for gsap-plugins: https://www.openagentskill.com/skills/calesthio-gsap-plugins?ref=x Install: npx skills add calesthio/OpenMontage --skill gsap-plugins
Listing source
This listing was indexed from public sources and is not marked official until a maintainer claim is approved.
Attribution links to the public repository or creator profile. Creators can claim the listing to update ownership signals.
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Creator backlink kit
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@calesthio
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Review then install
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Install targets
Codex install prompt
Install the "gsap-plugins" agent skill from https://github.com/calesthio/OpenMontage/tree/main/.agents/skills/gsap-plugins. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: Official GSAP skill for GSAP plugins — registration, ScrollToPlugin, ScrollSmoother, Flip, Draggable, Inertia, Observer, SplitText, ScrambleText, SVG and physics plugins, CustomEase, EasePack, CustomWiggle, CustomBounce, GSDevTools. Use when the user asks about a GSAP plugin, scroll-to, flip animations, draggable, SVG drawing, or plugin registration. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {"event_id":"install_<unique-id>","skill_slug":"calesthio-gsap-plugins","task":"Install gsap-plugins","agent":"codex","outcome":"success","install_used":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.Supply asset profile
Code review, repo analysis, testing, CI, GitHub, DevOps, and developer workflow skills.
Scenario
Coding agents
I need a coding agent that can understand a repository, edit code, and review pull requests.
Agent fit
Claude Code + Cursor + Browser agents
Codex, Claude Code, Cursor, CLI, or custom agents.
Install
Ready
npx skills add calesthio/OpenMontage --skill gsap-plugins
Maintenance
fresh
16d since push
Risk
Needs review
Financial research output is not financial advice; require human review before any live investment decision
GitHub quality
56K
94/100 Quality · 85/100 Trust
Coverage tags
Review notes
Financial research output is not financial advice; require human review before any live investment decision · Financial research output is not financial advice; require human review before any live investment decision.
Agent adoption scorecard
These scores combine public repository metadata, OpenAgentSkill review signals, maintenance freshness, and install readiness. They are a shortlist signal, not a replacement for human review.
Quality
ExcellentHigh-confidence pick with strong adoption and healthy maintenance signals.
Trust
Review then installGood shortlist signal, but the agent should review audit notes, install policy, and outcome evidence before running it.
Audit
Needs reviewA machine-readable review of install readiness, security metadata, maintenance, and adoption risk.
OpenAgentSkill Trust Score v5
Use as the primary candidate after human or sandbox review.
Stars
56K GitHub stars
Repo activity
56K stars, 7.0K forks
Maintenance
16d since push
License
MIT
Install
npx skills add calesthio/OpenMontage --skill gsap-plugins
Install safety
Agent-readable metadata
Use this block or the embedded JSON to decide whether an agent should install this skill, choose an alternative, or ask for human review first.
Suited tasks
Suited agents
Install decision
Trust and risk
Outcome loop
Install command
npx skills add calesthio/OpenMontage --skill gsap-pluginsDo not use when
Agent safety v2
Usable candidate, but the agent should surface permission and audit notes before installation.
Require human approval before installing into a real workspace.
medium
Skill likely fetches remote pages, APIs, repositories, or external services.
medium
Skill may read or write project files, documents, generated artifacts, or local workspace state.
Agent resolve plan
The Resolve API returns the selected skill, alternatives, safety policy, audit notes, install target, and copy-paste prompt an agent can follow without scraping this page.
Open JSON
/api/agent/resolve?task=Use%20gsap-plugins%20for%20an%20agent%20workflow&agent=codex&max_risk=medium
Resolve text
/api/agent/resolve?task=Use%20gsap-plugins%20for%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text
Install handoff
/api/skills/calesthio-gsap-plugins/install
Agent should check
Copy prompt
Task: Use gsap-plugins in this workspace.
Resolve first: https://www.openagentskill.com/api/agent/resolve?task=Use%20gsap-plugins%20for%20an%20agent%20workflow&agent=codex&max_risk=medium
Review install handoff: https://www.openagentskill.com/api/skills/calesthio-gsap-plugins/install
Install command: npx skills add calesthio/OpenMontage --skill gsap-plugins
Before running it, summarize audit warnings, required permissions, and the fallback skill if install is risky.Agent handoff
Use the public install endpoint to fetch the command, safety checklist, target prompts, and canonical links for this skill.
Install handoff
/api/skills/calesthio-gsap-plugins/install
LLM text format
/api/skills/calesthio-gsap-plugins/install?format=text
Find alternatives
/api/skills/search?q=gsap-plugins&limit=3
Agent prompt
Use gsap-plugins for this task. Review https://www.openagentskill.com/api/skills/calesthio-gsap-plugins/install, then install with: npx skills add calesthio/OpenMontage --skill gsap-pluginsRegistry metadata
This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.
Manifest
/api/registry/manifest/calesthio-gsap-plugins
LLM text
/api/registry/manifest/calesthio-gsap-plugins?format=text
Install alias
/api/registry/install/calesthio-gsap-plugins
Recommend
/api/registry/recommend?task=Use%20gsap-plugins%20in%20an%20agent%20workflow&limit=3
Agent fit
Browser automation
Use-case tags
Platforms
Claude Code, Cursor, Browser agents
Audit report
A machine-readable review of install readiness, security metadata, maintenance, and adoption risk.
Agent decision cockpit
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Role in stack
Primary pick
Primary fit
Browser automation
Trust label
Production-ready
Install path
Command ready
Use when
Evidence
review first
Implementation path
Trust profile
Good shortlist signal, but the agent should review audit notes, install policy, and outcome evidence before running it.
GitHub adoption
PASS56K GitHub stars
Stars/forks activity
PASS56K stars, 7.0K forks; issue activity unavailable in current metadata
Recent maintenance
PASS16d since push
License clarity
PASSMIT
Good signals
Review before install
Recommended action
Use as the primary candidate after human or sandbox review.
Quality profile
High-confidence pick with strong adoption and healthy maintenance signals.
Workflow fit
Operate web apps
I need my agent to control a browser, fill forms, and verify web app workflows.
Build and ship code
I need a coding agent that can understand a repository, edit code, and review pull requests.
Search private knowledge
I need my agent to build a RAG workflow over documents and retrieve reliable context.
Workflow fit
Operate and verify web apps
A workflow for agents that navigate products, fill forms, take screenshots, and verify real user flows across web applications.
Inspect, patch, and verify code
A workflow for software agents that inspect repositories, review pull requests, generate tests, and turn findings into shippable patches.
Ingest, retrieve, and cite
A workflow for document-heavy agents that ingest files, create searchable knowledge, retrieve relevant context, and answer with grounded sources.
Alternative shortlist
Similar skills that may fit this task.
Run multimodal agents that operate desktop interfaces
Connect agents to hundreds of workflow automations
利用AI大模型,一键生成高清短视频 Generate short videos with one click using AI LLM.
Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at
--- name: gsap-plugins description: Official GSAP skill for GSAP plugins — registration, ScrollToPlugin, ScrollSmoother, Flip, Draggable, Inertia, Observer, SplitText, ScrambleText, SVG and physics plugins, CustomEase, EasePack, CustomWiggle, CustomBounce, GSDevTools. Use when the user asks about a GSAP plugin, scroll-to, flip animations, draggable, SVG drawing, or plugin registration. license: MIT ---
# GSAP Plugins
## When to Use This Skill
Apply when using or reviewing code that uses GSAP plugins: registering plugins, scroll-to, flip/FLIP animations, draggable elements, SVG (DrawSVG, MorphSVG, MotionPath), text (SplitText, ScrambleText), physics, easing plugins (CustomEase, EasePack, CustomWiggle, CustomBounce), or GSDevTools. ScrollTrigger has its own skill (gsap-scrolltrigger).
**Related skills:** For core tweens use **gsap-core**; for ScrollTrigger use **gsap-scrolltrigger**; for React use **gsap-react**.
## Registering Plugins
Register each plugin once so GSAP (and bundlers) know to include it. Use **gsap.registerPlugin()** with every plugin used in the project:
```javascript import gsap from "gsap"; import { ScrollToPlugin } from "gsap/ScrollToPlugin"; import { Flip } from "gsap/Flip"; import { Draggable } from "gsap/Draggable";
gsap.registerPlugin(ScrollToPlugin, Flip, Draggable); ```
- ✅ Register before using the plugin in any tween or API call. - ✅ In React, register at top level or once in the app (e.g. before first useGSAP); do not register inside a component that re-renders. useGSAP is a plugin that needs to be registered before use.
## Scroll
### ScrollToPlugin
Animates scroll position (window or a scrollable element). Use for “scroll to element” or “scroll to position” without ScrollTrigger.
```javascript gsap.registerPlugin(ScrollToPlugin);
gsap.to(window, { duration: 1, scrollTo: { y: 500 } }); gsap.to(window, { duration: 1, scrollTo: { y: "#section", offsetY: 50 } }); gsap.to(scrollContainer, { duration: 1, scrollTo: { x: "max" } }); ```
**ScrollToPlugin — key config (scrollTo object):**
| Option | Description | |--------|-------------| | `x`, `y` | Target scroll position (number), or `"max"` for maximum | | `element` | Selector or element to scroll to (for scroll-into-view) | | `offsetX`, `offsetY` | Offset in pixels from the target position |
### ScrollSmoother
Smooth scroll wrapper (smooths native scroll). Requires ScrollTrigger and a specific DOM structure (content wrapper + smooth wrapper). Use when smooth, momentum-style scroll is needed. See GSAP docs for setup; register after ScrollTrigger. DOM structure would look like:
```html <body> <div id="smooth-wrapper"> <div id="smooth-content"> <!--- ALL YOUR CONTENT HERE ---> </div> </div> <!-- position: fixed elements can go outside ---> </body> ```
## DOM / UI
### Flip
Capture state with `Flip.getState()`, then apply changes (e.g. layout or class changes), then use `Flip.from()` to animate from the previous state to the new state (FLIP: First, Last, Invert, Play). Use when animating between two layout states (lists, grids, expanded/collapsed).
```javascript gsap.registerPlugin(Flip);
const state = Flip.getState(".item"); // change DOM (reorder, add/remove, change classes) Flip.from(state, { duration: 0.5, ease: "power2.inOut" }); ```
**Flip — key config (Flip.from vars):**
| Option | Description | |--------|-------------| | `absolute` | Use `position: absolute` during the flip (default: `false`) | | `nested` | When true, only the first level of children is measured (better for nested transforms) | | `scale` | When true, scale elements to fit (avoids stretch); default `true` | | `simple` | When true, only position/scale are animated (faster, less accurate) | | `duration`, `ease` | Standard tween options |
#### More information
https://gsap.com/docs/v3/Plugins/Flip
### Draggable
Makes elements draggable, spinnable, or throwable with mouse/touch. Use for sliders, cards, reorderable lists, or any drag interaction.
```javascript gsap.registerPlugin(Draggable, InertiaPlugin);
Draggable.create(".box", { type: "x,y", bounds: "#container", inertia: true }); Draggable.create(".knob", { type: "rotation" }); ```
**Draggable — key config options:**
| Option | Description | |--------|-------------| | `type` | `"x"`, `"y"`, `"x,y"`, `"rotation"`, `"scroll"` | | `bounds` | Element, selector, or `{ minX, maxX, minY, maxY }` to constrain drag | | `inertia` | `true` to enable throw/momentum (requires InertiaPlugin) | | `edgeResistance` | 0–1; resistance when dragging past bounds | | `cursor` | CSS cursor during drag | | `onDragStart`, `onDrag`, `onDragEnd` | Callbacks; receive event and target | | `onThrowUpdate`, `onThrowComplete` | Callbacks when inertia is active |
### Inertia (InertiaPlugin)
Works with Draggable for momentum after release, or track the inertia/velocity of any property of any object so that it can then seamlessly glide to a stop using a simple tween. Register with Draggable when using `inertia: true`:
```javascript gsap.registerPlugin(Draggable, InertiaPlugin); Draggable.create(".box", { type: "x,y", inertia: true }); ```
Or track velocity of a property: ```javascript InertiaPlugin.track(".box", "x"); ```
Then use `"auto"` to continue the current velocity and glide to a stop:
```javascript gsap.to(obj, { inertia: { x: "auto" } }); ```
### Observer
Normalizes pointer and scroll input across devices. Use for swipe, scroll direction, or custom gesture logic without tying directly to scroll position like ScrollTrigger.
```javascript gsap.registerPlugin(Observer);
Observer.create({ target: "#area", onUp: () => {}, onDown: () => {}, onLeft: () => {}, onRight: () => {}, tolerance: 10 }); ```
**Observer — key config options:**
| Option | Description | |--------|-------------| | `target` | Element or selector to observe | | `onUp`, `onDown`, `onLeft`, `onRight` | Callbacks when swipe/scroll passes tolerance in that direction | | `tolerance` | Pixels before direction is detected; default 10 | | `type` | `"touch"`, `"pointer"`, or `"wheel"` (default: `"touch,pointer"`) |
## Text
### SplitText
Splits an element’s text into characters, words, and/or lines (each in its own element) for staggered or per-unit animation. Use when animating text character-by-character, word-by-word, or line-by-line. Returns an instance with **chars**, **words**, **lines** (and **masks** when `mask` is set). Restore original markup with **revert()** or let **gsap.context()** revert. Integrates with **gsap.context()**, **matchMedia()**, and **useGSAP()**. API: **SplitText.create(target, vars)** (target = selector, element, or array).
```javascript gsap.registerPlugin(SplitText);
const split = SplitText.create(".heading", { type: "words, chars" }); gsap.from(split.chars, { opacity: 0, y: 20, stagger: 0.03, duration: 0.4 }); // later: split.revert() or let gsap.context() cleanup revert ```
With **onSplit()** (v3.13.0+), animations run on each split and on re-split when **autoSplit** is used; returning a tween/timeline from **onSplit()** lets SplitText clean up and sync progress on re-split:
```javascript SplitText.create(".split", { type: "lines", autoSplit: true, onSplit(self) { return gsap.from(self.lines, { y: 100, opacity: 0, stagger: 0.05, duration: 0.5 }); } }); ```
**SplitText — key config (SplitText.create vars):**
| Option | Description | |--------|-------------| | **type** | Comma-separated: `"chars"`, `"words"`, `"lines"`. Default `"chars,words,lines"`. Only split what is needed (e.g. `"words, chars"` if not using lines) for performance. Avoid chars-only without words/lines or use **smartWrap: true** to prevent odd line breaks. | | **charsClass**, **wordsClass**, **linesClass** | CSS class on each split element. Append `"++"` to add an incremented class (e.g. `linesClass: "line++"` → `line1`, `line2`, …). | | **aria** | `"auto"` (default), `"hidden"`, or `"none"`. Accessibility: `"auto"` adds `aria-label` on the split element and `aria-hidden` on line/word/char elements so screen readers read the label; `"hidden"` hides all from readers; `"none"` leaves aria unchanged. Use `"none"` plus a screen-reader-only duplicate if nested links/semantics must be exposed. | | **autoSplit** | When `true`, reverts and re-splits when fonts finish loading or when the element width changes (and lines are split), avoiding wrong line breaks. **Animations must be created inside onSplit()** so they target the newly split elements; **return** the animation from **onSplit()** for automatic cleanup and time-sync on re-split. | | **onSplit(self)** | Callback when split completes (and on each re-split if **autoSplit** is `true`). Receives the SplitText instance. Returning a GSAP tween or timeline enables automatic revert/sync of that animation when re-splitting. | | **mask** | `"lines"`, `"words"`, or `"chars"`. Wraps each unit in an extra element with `overflow: clip` for mask/reveal effects. Only one type; access wrappers on the instance’s **masks** array (or use class `-mask` if a class is set). | | **tag** | Wrapper element tag; default `"div"`. Use `"span"` for inline (note: transforms like rotation/scale may not render on inline elements in some browsers). | | **deepSlice** | When `true` (default), nested elements (e.g. `<strong>`) that span multiple lines are subdivided so lines don’t stretch vertically. Only applies when splitting lines. | | **ignore** | Selector or element(s) to leave unsplit (e.g. `ignore: "sup"`). | | **smartWrap** | When splitting **chars** only, wraps words in a `white-space: nowrap` span to avoid mid-word line breaks. Ignored if words or lines are split. Default `false`. | | **wordDelimiter** | Word boundary: string (default `" "`), RegExp, or `{ delimiter: RegExp, replaceWith: string }` for custom splitting (e.g. zero-width joiner for hashtags, or non-Latin). | | **prepareText(text, parent)** | Function that receives raw text and parent element; return modified text before splitting (e.g. to insert break markers for languages without spaces). | | **propIndex** | When `true`, adds a CSS variable with index on each split element (e.g. `--word: 1`, `--char: 2`). | | **reduceWhiteSpace** | Collapse consecutive spaces; default `true`. From v3.13.0 also honors line breaks and can insert `<br>` for `<pre>`. | | **onRevert** | Callback when the instance is reverted. |
**Tips:** Split only what is animated (e.g. skip chars if only animating words). For custom fonts, split after they load (e.g. `document.fonts.ready.then(...)`) or use **autoSplit: true** with **onSplit()**. To avoid kerning shift when splitting chars, use CSS `font-kerning: none; text-rendering: optimizeSpeed;`. Avoid `text-wrap: balance`; it can interfere with splitting. SplitText does not support SVG `<text>`.
**Learn more:** [SplitText](https://gsap.com/docs/v3/Plugins/SplitText/)
### ScrambleText
Animates text with a scramble/glitch effect. Use when revealing or transitioning text with a scramble.
```javascript gsap.registerPlugin(ScrambleTextPlugin);
gsap.to(".text", { duration: 1, scrambleText: { text: "New message", chars: "01", revealDelay: 0.5 } }); ```
## SVG
### DrawSVG (DrawSVGPlugin)
Reveals or hides the stroke of SVG elements by animating `stroke-dashoffset` / `stroke-dasharray`. Works on `<path>`, `<line>`, `<polyline>`, `<polygon>`, `<rect>`, `<ellipse>`. Use when “drawing” or “erasing” strokes.
**drawSVG value:** Describes the **visible segment** of the stroke along the path (start and end positions), not “animate from A to B over time.” Format: `"start end"` in percent or length. Examples: `"0% 100%"` = full stroke; `"20% 80%"` = stroke only between 20% and 80% (gaps at both ends). The tween animates from the element’s **current** segment to the **target** segment — e.g. `gsap.to("#path", { drawSVG: "0% 100%" })` goes from whatever it is now to full stroke. Single value (e.g. `0`, `"100%"`) means start is 0: `"100%"` is equivalent to `"0% 10
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