PDF Manipulation Skill Merge, split, extract, redact, and transform PDF files using free command-line tools and libraries. Covers common PDF operations for document automation workflows. When to use - Merge multiple PDFs into one document - Split large PDFs into separate files or page ranges - Extract text, images, or specific pages - Redact sensitive information - Add watermarks, passwords, or metadata - Convert PDFs to images or other formats Required tools - pdftk — Swiss Army knife for PDF manipulation (merge, split, rotate, encrypt) - qpdf — PDF transformation and encryption (linearize,…