Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add oaustegard/claude-skills --skill converting-filesgit clone --depth 1 https://github.com/oaustegard/claude-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/oaustegard/claude-skills/converting-files)<a href="https://agentmods.dev/skills/oaustegard/claude-skills/converting-files"><img src="https://agentmods.dev/badge/skills/oaustegard/claude-skills/converting-files/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/oaustegard/claude-skills/converting-files"><img src="https://agentmods.dev/badge/skills/oaustegard/claude-skills/converting-files.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00134 | $0.01786 |
| Opus 5 | $0.00067 | $0.00893 |
| Sonnet 5 | $0.00027 | $0.00357 |
| Haiku 4.5 | $0.00013 | $0.00179 |
Grade A, and why
converting-files scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.
converting-files
Four conversion engines are already in this container — pandoc, libreoffice
(headless), ImageMagick's convert, and ffmpeg. The hard part isn't running
them; it's picking the right one. pandoc mangles a real .docx into PDF;
LibreOffice is the tool for that. pandoc is better than LibreOffice for
md → docx. Neither touches mp4 → gif. This skill encodes that routing so the
choice isn't re-derived (often wrongly) each time.
scripts/convert.py is a dispatcher over those four binaries, not a new engine.
Use it for the common cases; drop to the raw engine when you need flags it
doesn't pass through.
Is this the right skill?
| You want to… | Use instead |
|---|---|
| Change a file's format (ext A → ext B) | this skill |
| Edit/author a Word/PPT/Excel/PDF's content | docx / pptx / xlsx / pdf skills |
| Read a file already shown in context | just read it — no conversion |
| Extract text/tables from a PDF | pdf-reading skill |
| Fill or merge PDFs | pdf skill |
Format change = here. Content change = a content skill. A docx → pdf is a
format change; "fix the grammar in this docx" is not.
Engine routing (the actual content of this skill)
Source family → target family decides the engine. The dispatcher applies this; the table is here so the reasoning is auditable and so you can call the engine directly when needed.
| From → To | Engine | Why |
|---|---|---|
| markup → markup (md, html, rst, latex, org, epub, rtf, ipynb…) | pandoc | what it's built for |
| markup → Office (md → docx/pptx/odt) | pandoc | cleaner than LibreOffice from markup |
| Office → markup (docx/odt/pptx → md/html…) | pandoc | reads modern OOXML well |
| Office → PDF (docx/pptx/xlsx → pdf) | LibreOffice | preserves layout; pandoc mangles it |
| Office ↔ Office, or legacy (.doc/.ppt/.xls) anything | LibreOffice | pandoc can't read legacy binary formats at all |
| markup → PDF (md → pdf) | pandoc (+pdflatex/xelatex) | lighter than LibreOffice for plain markup |
| image ↔ image (png, jpg, gif, webp, tiff, heic, svg…) | ImageMagick | convert in out |
| image → PDF | ImageMagick | |
| audio ↔ audio (mp3, wav, flac, ogg, aac, m4a, opus…) | ffmpeg | |
| video ↔ video, mp4 → gif, gif → mp4 | ffmpeg | gif-from-video is an ffmpeg job, not ImageMagick |
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 10d ago First seen · 124 lines · 134 tokens per session scan A c75fa6bc62ed
converting-files is a skill published in the GitHub repository oaustegard/claude-skills (148 stars, last pushed today), licensed MIT. It adds 134 tokens to every session and 1,786 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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