Choose python-docx when: (+4)

Choose python-docx when:

• Creating reports, contracts, or documentation from scratch
• Modifying existing Word documents programmatically
• Need full control over document structure and styling
• Generating documents with complex formatting requirements

Choose openpyxl when:

• Automating Excel report generation
• Reading and processing spreadsheet data
• Creating workbooks with formulas and charts
• Batch processing multiple Excel files

Choose python-pptx when:

• Generating presentations from data automatically
• Creating slide decks with consistent branding
• Building presentation templates with dynamic content
• Automating reporting dashboards as slides

Choose pypdf when:

• Merging multiple PDFs into one document
• Extracting text or pages from PDF files
• Adding watermarks or page numbers
• Splitting large PDFs into smaller files

Choose docx-templates when:

• Filling template documents with database records
• Generating bulk documents (letters, invoices, contracts)
• Non-developers need to maintain document templates
• Jinja2-style syntax is preferred for templates