Recruiters and applicant tracking systems (ATS) judge your resume before a human ever reads it — and a badly formatted or oversized file can cost you the interview. Here's how to make a resume PDF that's small, clean and ATS-friendly.

Why PDF (usually) wins

PDF preserves your layout exactly across every device, which is why most employers ask for it. The one caveat: a few older ATS prefer .docx, so always follow the job posting's instructions. When it says PDF, make sure yours is a true text-based PDF, not a scanned image of a printout — an image-only resume is invisible to an ATS.

Keep the file size down

Many portals and email systems cap attachments at around 1–2 MB, and a resume with a photo or a designed header can blow past that. If yours is too big, compress your resume PDF to slip under the limit while staying crisp. Building from scratch? Our Resume Maker exports a clean, lightweight PDF.

Make it ATS-readable

  • Use a standard, single-column layout — ATS software struggles with complex tables and multi-column designs.
  • Use real text, not text inside an image, so the system can parse it.
  • Stick to common fonts and clear section headings (Experience, Education, Skills).
  • Avoid putting key details only in headers/footers, which some parsers ignore.

One file for the whole application

If a posting asks for a resume and cover letter together, write the letter with our Cover Letter Generator and merge them into one PDF. A single, well-named file (FirstName_LastName_Resume.pdf) looks more professional than several attachments.