feat(compare): add PDF file comparison support#63
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MrFlounder merged 1 commit intomainfrom Mar 14, 2026
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Extract text from PDFs using pdftotext before diffing, enabling side-by-side comparison of PDF documents in the browser viewer. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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## Summary - Adds `compare_ensure_poppler` helper that auto-installs poppler when missing (brew/apt/dnf) - Runs during first-time asset setup (`compare_ensure_assets`) so PDF comparison works out of the box - Also runs on `crab compare --update-assets` to ensure poppler is present - Falls back to a manual install message if no supported package manager is found Follow-up to #63. ## Test plan - [ ] On a machine without poppler: `crab compare file1.pdf file2.pdf` — auto-installs poppler then compares - [ ] `crab compare --update-assets` — re-downloads assets and ensures poppler is installed - [ ] On a machine with poppler already installed — skips install silently 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
crab compareby extracting text viapdftotext(poppler) before diffing.pdfextensions (case-insensitive) and auto-extracts text with layout preservationpdftotextis missing (brew/apt/dnf)Test plan
crab compare file1.pdf file2.pdf— opens diff in browser with extracted textcrab compare file.pdf file.txt— shows error about mismatched typescrab compare file1.txt file2.txt— still works as before (no regression)pdftotextinstalled — shows install instructions🤖 Generated with Claude Code