PDF or Word? It's one of those questions where the "correct" answer depends on exactly where your resume is going. Here's the clear guidance for each scenario so you can stop guessing.

The general rule in 2026

Default to PDF unless the job posting specifically requests Word, or the application portal tells you Word is preferred. PDF is the safest choice in most situations because it preserves your formatting exactly across all devices and operating systems, it cannot be accidentally edited or corrupted, and it signals professionalism. The vast majority of modern ATS systems handle PDF correctly — the old myth that ATS can't read PDFs is outdated for systems used in 2024 onwards.

When Word (.docx) is better

• The job posting explicitly asks for Word. Follow the instructions — submitting PDF when Word is requested can get your application rejected outright.
• The application portal says Word is preferred. Some older enterprise ATS systems (common in government and large traditional industries) parse DOCX more accurately than PDF.
• A recruiter is helping you apply. Recruiting agencies often ask for Word so they can reformat your resume with their agency's template before sending to clients.
• You're applying via email in a conservative industry. Finance, law, and some government roles still default to Word attachments.

When PDF is clearly better

• Applying through modern ATS portals (Workday, Greenhouse, Lever, Ashby)
• Sending your resume directly to a hiring manager via email
• Sharing your resume on LinkedIn or a personal website
• Any situation where you want your layout to look exactly as you designed it

The one PDF format to avoid

Not all PDFs are equal. An image-based PDF — which is what you get if you scan a paper resume or print to PDF from certain formats — cannot be read by ATS at all. ATS needs selectable, copy-able text. To check: open your PDF and try to highlight and copy some text. If you can, it's text-based and ATS-readable. If you can't, you have an image-based PDF and need to regenerate it. See How ATS Software Actually Works for more on parsing.

What about the file name?

Name your file professionally: FirstName-LastName-Resume.pdf (or .docx). Never submit a file called "Resume Final v3 (1).pdf" or "My CV updated.docx". Recruiters organize dozens of files and a professional file name makes a small but real impression. Run your final resume through CV Chackr in either format — it accepts both PDF and DOCX and gives you an accurate ATS score from either.