PDF vs Word: Which Format Should You Send?

Both formats hold the same words. They answer different questions, though: Is this finished, or is it still being worked on?

The rule of thumb

Send a PDF when the document is final. Send a Word file when someone needs to edit it.

PDF keeps the layout fixed and looks identical everywhere. Word (DOCX) is built for changes, comments and tracked edits.

Common situations

Your CV or résumé → PDF

Your layout, fonts and spacing arrive exactly as you designed them, on any device. The only exception is when a recruiter or job portal specifically asks for .docx. Some older applicant tracking systems prefer it, so follow the instructions.

Invoices and quotes → PDF

A PDF looks professional and is harder to alter by accident. It’s also what accounting teams expect.

Contract drafts → Word. Signed contracts → PDF

While terms are being negotiated, both sides need tracked changes and comments, so use Word. Once everyone agrees, convert the final version to PDF and sign it.

College assignments → whatever the instructions say

Many submission systems ask for PDF so the formatting can’t shift. Others want DOCX so tutors can comment inline.

Forms you need someone to fill in → depends

If they’ll type into it, send an editable Word file, or a PDF with form fields. If they’ll print and sign it, send a PDF.

Quick comparison

	PDF	Word (DOCX)
Looks the same everywhere	✅	❌ depends on fonts & app
Easy to edit	❌	✅
Track changes & comments	Limited	✅
Can be password-protected	✅	✅
Opens on any phone	✅	Usually, layout may shift
Feels “final”	✅	❌

Switching between them

You don’t have to choose forever:

• Finished editing? Convert with Word to PDF.
• Need to change a PDF? Convert it back with PDF to Word.
• Received a locked PDF you need to edit? Unlock it first.

The takeaway

If you’re not sure, send a PDF. It’s the safer default because it looks right on every device. Keep the Word original so you can make changes later.