TL;DR: Resume Annex's ATS Resume Checker is free, instant, and privacy-preserving. Paste your resume and see your score in 10 seconds. No signup, no upload, no data leaves your browser. Below we explain how ATS scoring works, why most free checkers overpromise, and the 5 fixes that move a 55 into the 80s.
What Is an ATS Resume Checker?
An Applicant Tracking System (ATS) is the software that ingests job applications at 99% of Fortune 500 companies and a majority of small and mid-market employers. When you upload a resume, the ATS parses the text into fields — contact info, work history, skills — and scores it against the keywords the hiring team defined for the role. An ATS resume checker simulates that process locally and tells you, before you apply, how well your resume will survive the parse.
The Resume Annex checker uses the same underlying signals: strong action verbs, quantified achievements, structured sections (summary / experience / education / skills), bullet formatting, and keyword density. It runs deterministic rules so your score is reproducible — not a moody LLM output.
Why Most Free Checkers Are Not Actually Free
Full guide continues — coming this week. In the meantime, try the tool directly at /ats-score.
The 5 Fixes That Move You From 55 to 85
Full guide continues — coming this week.