Open-source LLM-friendly web crawler and scraper

React and Next.js performance guidance for writing, reviewing, and refactoring production UI code.

A Codex skill for generating minimal zine-style editorial poster prompts and images.

OpenPDF is an open-source Java library for creating, editing, rendering, and encrypting PDF documents, as well as generating PDFs from HTML. It is licensed under the LGPL and MPL.

Stylesheet-based markdown rendering for your CLI apps 💇🏻‍♀️

Java library for parsing and rendering CommonMark (Markdown)

A geospatial analytics skill for AI agents like Claude, Codex, and Copilot, enabling map-based queries on PostGIS, BigQuery, Snowflake.

A lightweight 2D graphics library for modern GPUs, delivering high-performance text, image, and vector rendering across major platforms.

The open source code of this project is used for userscripts (油猴脚本) for desktop browsers, including Font Rendering (Customized) (字体渲染（自用脚本）- Font Rendering.user.js), and Search Engine Assistant (优雅的搜索引擎助手 - Google & Baidu Switcher.user.js), etc.

♏ 一款浏览器端的 Markdown 编辑器，支持所见即所得（富文本）、即时渲染（类似 Typora）和分屏预览模式。An In-browser Markdown editor, support WYSIWYG (Rich Text), Instant Rendering (Typora-like) and Split View modes.

📄 PDF extraction and rendering across all JavaScript runtimes

GPU-accelerated force graph layout and rendering