oakoss/agent-skills
PDF engineering for extraction, generation, modification, and form filling.
npx skills add oakoss/agent-skills --skill pdf-tools
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npx skills add oakoss/agent-skills
Declared targets from SKILL.md / docs. Unmarked agents are not listed — the skill may still install via the CLI.
main
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Files included with this skill beyond the listing page.
SKILL.md
6,267 B
SUMMARY.md
332 B
Full-lifecycle PDF engineering covering extraction, generation, modification, form filling, and security. Prioritizes JavaScript-first solutions (pdf-lib, unpdf, Puppeteer) with Python/CLI utilities for advanced scenarios.
When to use: Extracting structured data from PDFs, generating pixel-perfect PDFs from HTML/React, modifying existing PDFs, filling forms (fillable or non-fillable), or securing documents with encryption.
When NOT to use: Simple text file processing, image-only manipulation without PDF context, or tasks better handled by a word processor.
| Task | Tool | Key Point |
|---|---|---|
| Generate PDF from HTML | Puppeteer / Playwright | page.pdf(); use networkidle0 (Puppeteer) or networkidle (Playwright) |
| Extract text (lightweight) | unpdf | Edge/serverless compatible |
| Extract tables (AI) | Vision model + Zod schema | Multi-column and merged cell support |
| Extract tables (non-AI) | pdfplumber (Python) | Precise cell boundary detection |
| Modify, merge, split | pdf-lib (or @pdfme/pdf-lib) |
Byte-level PDF manipulation in JS |
| Fill fillable forms | pdf-lib (or @pdfme/pdf-lib) |
Inspect AcroForm fields before writing |
| Fill non-fillable forms | Python annotation scripts | Visual analysis + bounding box annotations |
| Encrypt PDF | qpdf | AES-256: qpdf --encrypt user owner 256 -- |
| Repair corrupted PDF | qpdf | qpdf input.pdf --replace-input |
| Fast text extraction (CLI) | poppler-utils | pdftotext -layout input.pdf - |
| Merge thousands of files | pypdf (Python) | Lighter than headless browser |
| Batch queue processing | BullMQ + unpdf | Redis-backed with retry, concurrency, progress tracking |
| PDF/A archival compliance | ghostscript + verapdf | gs -dPDFA=2 for conversion; verapdf for validation |
| Tagged PDF (accessibility) | Puppeteer | tagged: true maps HTML semantics to PDF structure tags |
| Digital signatures | @signpdf/\* | PKCS#7 signing with P12 certificates |
| PDF comparison | unpdf + diff / pixelmatch | Text diff or pixel-level visual diff between versions |
| Secure redaction | pymupdf (fitz) | apply_redactions() removes content bytes, not just visual overlay |
| Mistake | Correct Pattern |
|---|---|
| Using canvas drawing commands for PDF generation | Use Puppeteer/Playwright with HTML/CSS templates |
| Running Puppeteer in edge/serverless environments | Use unpdf for edge; Puppeteer requires full Node.js |
| Extracting complex layouts with basic text parsers | Use AI-assisted OCR or pdfplumber for multi-column text |
| Storing unencrypted PDFs with PII in public storage | Apply AES-256 encryption via qpdf before storage |
Relying on window.print() for server-side generation |
Use headless browser APIs (page.pdf()) for deterministic output |
| Using pypdf for complex layout extraction | Use pdfplumber or AI OCR for multi-column or overlapping text |
| Skipping font embedding in containerized environments | Embed Google Fonts or WOFF2 files with Puppeteer |
| Writing to flattened PDF form fields | Inspect AcroForm fields with pdf-lib before writing |
Using unmaintained pdf-lib for encrypted PDFs |
Use @cantoo/pdf-lib fork which adds encrypted PDF support |
Explore agent to examine AcroForm fields, encoding, and metadataTask agent to implement extraction, transformation, and generation workflowsPlan agent to select tools and plan extraction, generation, or modification strategies