PDF vs DOCX for ATS: follow instructions, then test the file
Use the format the employer requests. When both PDF and DOCX are accepted, choose the version that preserves readable text and produces accurate application fields. Neither extension guarantees successful parsing or a hiring outcome.
What PDF preserves and what it can hide
A PDF can preserve the layout across viewers, but a scanned or image-based page may not provide useful text. Test selection and copy order. A visually attractive file can place text in an unexpected sequence. Re-export from the original document when extraction breaks.
What to check in DOCX
Open the file again after saving. Inspect line breaks, tables, text boxes and font changes. Keep important details in the document body and use ordinary headings. DOCX is not automatically readable just because it is editable; complicated layout can still confuse extraction.
Run the same comparison on both files
Illustrative test: export one resume in both formats, copy the text from each and compare the sequence of role, employer, dates and bullets. If the application previews or fills fields, inspect that output too. Correct fields manually when allowed, rather than assuming the uploaded file resolved them.
Keep content constant while testing format
Do not change the target role or achievements during a format test. Otherwise a later score or response cannot tell you what the format changed. Keep the final submitted version and use the simpler readable file as your fallback.
Keep a small format test record
Create two exports from the same source document, one PDF and one DOCX. Record the software used, whether text is selectable and whether the role entries copy in the intended sequence. Compare contact details, dates and headings specifically. Do not change achievements while making this comparison.
If an employer allows a preview, review that output before submitting. Select the format that follows the instructions and preserves the required information. Keep the alternative for situations where another portal handles the file differently. A result in one application does not certify another system, so repeat the practical check when the instructions or document change.
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Sources and further reading
Editorial review: 13 October 2026. Examples are illustrative; results depend on the information supplied.