PDF or DOCX Resume? Compare the Actual File Before You Apply
A controlled, synthetic text fixture and a practical export checklist for choosing PDF or DOCX when the employer instructions are not specific.
Employer instructions come first
If an application asks for PDF, send PDF. If it asks for DOCX, send DOCX. A recruiter or employer may have a workflow preference that a general guide cannot override. When the posting says nothing, compare the exported files you would actually submit instead of relying on the editor preview.
This guide uses a controlled synthetic source rather than a real applicant. Download the TXT source, the generated PDF fixture, or the generated DOCX fixture, then upload the files to the checker. The files share the same content; this does not claim that CheckATS has tested every office suite or ATS combination.
What to compare after export
Use the same source text and record what you observe:
| Check | PDF | DOCX | | ----------------------------------------------- | ------------------------- | ------------------------- | | Can you select and copy the body text? | Check the exported file. | Check the exported file. | | Does the copied text keep the intended order? | Compare with the source. | Compare with the source. | | Are dates, bullets, and symbols intact? | Inspect both pages. | Inspect both pages. | | Does the file contain an unexpected blank page? | Remove it before sending. | Remove it before sending. |
This is a file-level check. It can tell you whether your export preserved the information you intended to send; it cannot tell you how an employer's parser ranks your application.
When PDF is a sensible choice
PDF can preserve the appearance you reviewed, which is useful when the instructions allow it and the exported text remains selectable and in order. Open the final PDF on another device, select the text, and check the extracted output. A visually perfect PDF that contains only an image is a different file from a text-based PDF.
When DOCX is a sensible choice
DOCX may be appropriate when the application explicitly asks for it or when a workflow needs an editable document. Open the final DOCX in a second compatible editor if possible, then copy the text into a plain-text view. Watch for unexpected fields, symbols, or a reading order that differs from the document you edited.
Do not choose by folklore
Neither extension is a universal pass. The employer's instructions, the actual exported text, and the receiving workflow matter more than a blanket claim that one format always wins. If you cannot explain what your file contains after copying its text, fix that uncertainty before applying.
The ATS resume format guide covers headings, contact details, and text-order checks. The methodology page explains why this tool cannot certify another employer's parser.
Test note
The comparison method and files were prepared on 2026-09-23. The source is synthetic and contains no applicant data. A local pdftotext pass and direct DOCX XML text read retained the same non-empty lines as the TXT source; browser upload verification remains a separate product check. We have not run a universal employer-ATS benchmark, so this page reports a reproducible fixture comparison rather than a PDF-versus-DOCX winner.