How ATS systems actually read your resume

An Applicant Tracking System (ATS) is software employers use to collect and filter job applications. Before a recruiter reads your resume, the ATS parses your file into plain text and structured fields like name, email, work history, and skills.

What the parser does

The parser converts your PDF or DOCX into text, then tries to map that text into sections. It looks for conventional headings (Experience, Education, Skills), a contact block it can read, and dated roles it can order.

What trips it up

• Multi-column layouts and tables — read out of order, so your bullets land in the wrong place.
• Text inside images or a scanned PDF — often skipped entirely.
• Key details in headers/footers — frequently ignored.
• Unusual fonts and graphics — can garble or drop text.

How to pass

• Use a single-column layout with standard section headings.
• Keep your email and phone as plain text near the top.
• Use real bullet points and consistent, parseable dates.
• Export a text-based PDF, not a scan or an image.

You can check any resume against these rules in seconds with ATSBuddy — it returns a deterministic ATS-friendliness score and the specific fixes to make.