Most mid-size companies and outsourcing agencies screen resumes with an applicant tracking system (ATS) before a human reads them. An ATS checker simulates that screening: it parses your resume the way the software does and shows what survives. If your skills section turns into garbage characters or your job titles vanish, you fail before anyone sees your experience.
What an ATS actually reads
- Plain text extracted from your file — layout, colors, and icons are ignored or break parsing
- Section headers it recognizes: Experience, Education, Skills, Certifications
- Keywords matched against the job description, including tools and role titles
- Dates used to compute your years of experience
How to run a meaningful ATS check
Upload your resume to an ATS checker together with the job description you are targeting. A useful report tells you three things: whether the file parsed cleanly, which required keywords are missing, and whether your formatting hides content. Vertuelo's free resume checker scores these and suggests specific line edits.
Fixes that raise your score fastest
- Use a single-column layout with standard headers and no tables
- Mirror exact keyword phrasing from the post: if they say "calendar management", do not only write "scheduling"
- Spell out acronyms once: "applicant tracking system (ATS)"
- Save as PDF with selectable text — if you can highlight the words, a parser can read them
- Put skills in a dedicated section AND in context inside experience bullets
FAQ
Do ATS systems auto-reject resumes? Many rank rather than reject; a low keyword match simply buries you on page five. Either way, the fix is the same.
Should I keyword-stuff in white text? No. Modern parsers flatten formatting, recruiters see the stuffing, and many systems flag it. Match keywords honestly through real experience.