zjie64821-ui/zhangjies-skills-and-mcp

PDF Processing Guide

Python Libraries

• pypdf: merge (PdfWriter.add_page()), split, rotate, metadata, encrypt (writer.encrypt()), watermark (page.merge_page())
• pdfplumber: text extraction (page.extract_text()), table extraction (page.extract_tables() → pandas)
• reportlab: create PDFs (Canvas for simple, Platypus/SimpleDocTemplate for multi-page)
• pytesseract + pdf2image: OCR scanned PDFs (convert_from_path() → image_to_string())

CLI Tools

• pdftotext (poppler): text extraction, -layout preserves layout
• qpdf: merge (qpdf --empty --pages), split, rotate, decrypt
• pdftk: merge, split (burst), rotate

Quick Reference

Task	Best Tool	Key API
Extract text	pdfplumber	page.extract_text()
Extract tables	pdfplumber	page.extract_tables() → DataFrame
Merge	pypdf	PdfWriter().add_page()
Split	pypdf	iterate reader.pages
Create	reportlab	SimpleDocTemplate / Canvas
OCR	pytesseract	convert_from_path() → image_to_string()
Watermark	pypdf	page.merge_page()
Password	pypdf	writer.encrypt()

User Request

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