Skill comparison

Compare agent skills before installing.

Put high-signal skills side by side and inspect quality, adoption, freshness, install readiness, use-case fit, and warnings in one place.

Comparing 4 skills

Use this as a shortlist, then open the skill detail page before adopting.

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Decision summary

Qpdf is the strongest overall pick here because it has a 100/100 readiness score and fits Document processing.

Strongest overall

Qpdf

Use this as a leading candidate, then validate the README and install path in your own agent stack.

Fastest prototype

Qpdf

Best first install candidate based on install readiness and adoption.

Freshest repo

Qpdf

Most recent maintenance signal among this shortlist.

Signal	Caj2pdf Qt CAJ 转 PDF 转换器（GUI 版本）	Qpdf qpdf: A content-preserving PDF document transformer	Diff Pdf A simple tool for visually comparing two PDF files	PDF4QT Open source PDF editor.
Quality	73/100 Strong	100/100 Excellent	100/100 Excellent	100/100 Excellent
Decision verdict	75/100 Strong shortlist Shortlist this skill and compare it with close alternatives before production adoption.	100/100 Production-ready Use this as a leading candidate, then validate the README and install path in your own agent stack.	100/100 Production-ready Use this as a leading candidate, then validate the README and install path in your own agent stack.	100/100 Production-ready Use this as a leading candidate, then validate the README and install path in your own agent stack.
Adoption	1.8K stars 0 installs	5.1K stars 0 installs	4.3K stars 0 installs	1.4K stars 0 installs
Freshness	Mar 31, 2024	Jun 13, 2026	Mar 28, 2026	Jun 5, 2026
Use-case fit	Document processing RAG and knowledge Coding agents	Document processing RAG and knowledge Coding agents	Document processing RAG and knowledge Workflow automation	Document processing RAG and knowledge Coding agents
Stack fit	RAG knowledge base Content growth agent	RAG knowledge base Content growth agent	RAG knowledge base Content growth agent	RAG knowledge base Content growth agent
Platform hints	C++, PDF, Claude Code	C++, PDF, Claude Code	C++, PDF, Claude Code	C++, PDF, Claude Code
Warnings	Repository looks stale · No OpenAgentSkill engagement data yet	No OpenAgentSkill engagement data yet	No OpenAgentSkill engagement data yet	No major risk signals from current metadata
Best for	Document processing workflows · Claude Code teams · teams that value GitHub adoption signals	Document processing workflows · Claude Code teams · teams that value GitHub adoption signals	Document processing workflows · Claude Code teams · teams that value GitHub adoption signals	Document processing workflows · Claude Code teams · teams that value GitHub adoption signals
Not ideal for	teams that require actively maintained dependencies · production agents without a repository review	teams that need a vendor-supported SLA · high-compliance environments without internal security review	teams that need a vendor-supported SLA · high-compliance environments without internal security review	teams that need a vendor-supported SLA · high-compliance environments without internal security review
OpenAgentSkill engagement	0 views 0 install copies	0 views 0 install copies	0 views 0 install copies	1 views 0 install copies
Install	`$ npx skills add sainnhe/caj2pdf-qt`	`$ npx skills add qpdf/qpdf`	`$ npx skills add vslavik/diff-pdf`	`$ npx skills add JakubMelka/PDF4QT`