Why Your Resume File Format Matters for ATS
Applicant Tracking Systems (ATS) are software tools that employers use to scan, parse, and rank resumes before a human ever sees them. Choosing the wrong file format can cause your resume to appear garbled, incomplete, or entirely unreadable to these systems, no matter how qualified you are.
The two most common resume file formats are PDF and Microsoft Word (.docx). Each has advantages and disadvantages depending on the ATS platform being used.
PDF vs. Word: Which Is Better for ATS?
The honest answer is: it depends on the specific ATS. However, here is what the data and expert consensus suggests:
- Microsoft Word (.docx) is generally the safest choice for ATS compatibility. Most modern ATS platforms parse Word documents reliably and accurately.
- PDF files are widely accepted but can cause parsing issues with older ATS platforms, especially if the PDF was created from a scanned document or contains complex formatting.
When to Use Word Format
Choose a Word (.docx) file when:
- The job posting does not specify a preferred format
- You are applying through an online portal that asks you to upload a resume
- You are applying to a company that likely uses an older or mid-tier ATS system
- The recruiter requests an editable version of your resume
When PDF Is Acceptable
A PDF resume works well when:
- The job posting specifically requests a PDF
- You are emailing your resume directly to a hiring manager
- You want to preserve your exact formatting and visual design
- The company uses a modern ATS platform known to handle PDFs well (such as Greenhouse or Lever)
File Formats You Should Avoid
Certain file formats are almost universally incompatible with ATS software and should be avoided entirely:
- .pages – Apple Pages files are rarely readable by ATS platforms
- .jpg or .png – Image files cannot be parsed by any ATS
- .txt – Plain text loses all formatting and is rarely used professionally
- Google Docs links – Always download and convert before submitting
How to Make Your Resume ATS-Friendly Regardless of Format
Your file format is only one piece of the puzzle. Follow these best practices to maximize ATS compatibility:
- Use standard section headings like "Work Experience," "Education," and "Skills"
- Avoid tables, text boxes, headers, and footers where key information might be missed
- Use a clean, single-column layout when possible
- Include relevant keywords from the job description naturally throughout your resume
- Use standard fonts like Arial, Calibri, or Times New Roman
- Save your Word file as .docx, not the older .doc format
How to Save Your Resume as the Right Format
In Microsoft Word, go to File > Save As and choose "Word Document (.docx)" for ATS submissions. To save as PDF, choose File > Save As > PDF or use File > Export > Create PDF/XPS. Always test your PDF by copying and pasting the text into a plain text editor to verify it parses correctly.
The Bottom Line
When in doubt, submit your resume as a Microsoft Word .docx file. It offers the broadest compatibility across ATS platforms. If the employer specifies a format, always follow their instructions. Pair your format choice with clean, keyword-rich content to give yourself the best possible chance of passing ATS screening.