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codewhale-hq / pdf

Read, extract, split, merge, rotate, watermark, fill, OCR, or create PDF files with verification of page counts and text extraction.

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SKILL.md
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PDF

Use this skill for any task where a PDF is the primary input or output.

Workflow

  1. Identify the PDF operation: read, extract, OCR, split, merge, rotate,
    watermark, redact, fill forms, encrypt/decrypt, or create.

  2. Preserve originals. Write outputs with explicit names.

  3. Use the most reliable available tool:

    • pdftotext, pdfinfo, qpdf, or mutool through bash when installed
      (the built-in read tool does not extract text from a PDF)

    • Python libraries such as pypdf, pdfplumber, PyMuPDF, or
      reportlab when available

    • OCR tools only for scanned pages

  4. For extraction, report page coverage and note when layout, tables, or OCR
    quality may affect accuracy.

  5. For generated or modified PDFs, verify page count, text extraction where
    possible, and file size. For redaction, confirm removed text is not
    extractable from the output.

Ask before installing dependencies or running OCR over large documents. Do not
represent a visually scanned PDF as fully accurate text unless OCR quality has
been checked.