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PDF vs DOCX

Comparing Portable Document Format and Microsoft Word Open XML Document — which format should you use?

PDFDOCX
Full NamePortable Document FormatMicrosoft Word Open XML Document
Extension.pdf.docx
MIME Typeapplication/pdfapplication/vnd.openxmlformats-officedocument.wordprocessingml.document
Categorydocumentdocument

PDF Pros

  • +Looks identical on every device and OS
  • +Supports text, images, forms, and multimedia
  • +Can be encrypted and digitally signed
  • +Widely accepted for legal and business documents

PDF Cons

  • -Difficult to edit without specialized software
  • -Can produce large file sizes with embedded fonts/images
  • -Accessibility can be poor if not properly tagged
  • -Not ideal for responsive/reflowable content

DOCX Pros

  • +Industry standard for documents
  • +Smaller file size than DOC
  • +XML-based (recoverable if corrupted)
  • +Supports rich formatting, images, tables

DOCX Cons

  • -Formatting can vary between Word versions
  • -Not all features supported by other editors
  • -Binary content embedded in XML
  • -Can contain macros (security risk)

Use PDF when...

  • -Business documents and contracts
  • -Resumes and reports
  • -Printable forms and invoices
  • -eBooks and manuals

Use DOCX when...

  • -Business documents and reports
  • -Resumes and cover letters
  • -Academic papers
  • -Legal documents and contracts