| Feature Area | Verified Pattern | Primary Library | Speed Impact | | --- | --- | --- | --- | | Text extraction | Block dict traversal | PyMuPDF | ⚡⚡⚡⚡⚡ | | Table extraction | Word bounding box clustering | PyMuPDF + pandas | ⚡⚡⚡⚡ | | Redaction | Search + redact annotations | PyMuPDF | ⚡⚡⚡⚡ | | Merging | PdfMerger with file handles | pypdf | ⚡⚡⚡ | | Layout text | Layout=True option | pdfplumber | ⚡⚡⚡ | | OCR batch | ocrmypdf + parallel | ocrmypdf | ⚡⚡ | | PDF generation | HTML to PDF via xhtml2pdf | reportlab | ⚡⚡⚡ | | Digital signing | PKCS#7 signatures | PyMuPDF | ⚡⚡⚡⚡ |