01 — TL;DR
If you need self-containment above all else, pick pdf (3.8/5). summarize (4.1/5) is a reasonable alternative if you're already in its source ecosystem. They overlap in document tool territory.
Where they differ
- Trigger clarity. trigger clarity: pdf and summarize score essentially the same (4.5 vs 4.5). Neither has an edge here.
- Output specificity. output specificity: pdf is clearly stronger (4.5 vs 4.0). For workloads where this dimension matters, prefer pdf.
- Scope precision. scope precision: pdf and summarize score essentially the same (4.5 vs 4.5). Neither has an edge here.
- Self-containment. self-containment: a meaningful gap. pdf scores 4.5 vs 3.5 for the other. If you need this dimension, pdf is the right pick.
- Reusability. reusability: pdf and summarize score essentially the same (4.0 vs 4.0). Neither has an edge here.
Which to pick
When to choose pdf
- Your workload emphasizes output specificity — pdf scores 4.5 vs 4.0 here.
- Your workload emphasizes self-containment — pdf scores 4.5 vs 3.5 here.
- You want a skill that's been reviewed in depth — pdf is deep-dive (summarize is reviewed).
- You prefer the official source — pdf comes from github:anthropics/skills, summarize from skillsmp.com.
- Multi-source consensus matters to you — pdf appears in 5 of our tracked sources (summarize: 1).
When to choose summarize
- You weight community adoption — summarize's upstream repo has 383,796 stars vs 137,502.
- The document tool convention you're working in matches summarize's scope.
Scenario by scenario
| Scenario | Winner | Why |
|---|---|---|
| Agent must auto-select between many document tools | either | Trigger clarity decides — clearer triggers reduce routing errors. |
| Output must be a specific file format or structured data | Output specificity determines whether downstream tools can rely on the result. | |
| Skill must be readable and complete out of the box | Self-containment matters when you're not the original author. | |
| Cross-team or cross-project reuse expected | either | Reusability separates one-off scripts from durable building blocks. |
Common questions
- Which is better, pdf or summarize?
- summarize ranks higher overall (4.1 vs 3.8 on our 0–5 rubric). That said, the better choice depends on which dimensions matter most for your use case.
- Are pdf and summarize both free to use?
- Both skills are free and open-source (or freely licensed). pdf: See source repo. summarize: See source repo. Installation has no cost; usage costs depend on the underlying LLM tokens consumed when you invoke the skill.
- Can I install both pdf and summarize at the same time?
- Yes. Agent skills are not exclusive — an agent runtime (Claude Code, Codex, etc.) can have many skills installed and route to whichever matches the current task. Installing both is a low-cost way to keep your options open.
- Where do these skills come from?
- pdf is sourced from github:anthropics/skills (official). summarize is sourced from skillsmp.com (curated marketplace). We verify each skill across multiple sources where possible; pdf appears in 5 sources, summarize in 1.