ATS Resume Checker is a free, open-source ATS (Applicant Tracking System) resume checking tool that mainly helps job seekers assess how well their resume matches a target position.
Purpose
ATS Resume Checker is used to check whether a resume can be correctly parsed by common ATS systems and to assess its match with a specific job description. According to the official description, ATS systems such as Workday, Greenhouse, Taleo, iCIMS, and Lever do not read resumes like humans do, but instead parse resumes into fields and then match them against the job. This tool simulates the checking logic of these systems to help users find issues in their resume that may affect parsing and ranking.
Main capabilities
- Instant ATS compatibility score, ranging from 0–100. The official recommendation is to aim for a score above 70, with above 80 being excellent.
- Keyword matching against any job description, pointing out missing ATS keywords in the resume.
- Provides prioritized improvement suggestions.
- Checks parsing structure, standard sections, contact information, quantifiable achievements, and keyword overlap.
- Supports pasting resume text or uploading a PDF file.
- Runs entirely in the browser, implemented in JavaScript; resumes are not uploaded, stored, or logged; data disappears after the tab is closed.
How to use
Users can paste resume content or upload a PDF file, then get an instant ATS compatibility score, keyword matching results against the job description, and prioritized fix suggestions. The tool itself is free and open source, and the official page offers options for Ko-fi tips and starring the GitHub repository. In addition, the page also provides a free "ATS Quick Fixes Checklist," containing 18 high-leverage adjustment suggestions, claiming it can add more than 20 points within 30 minutes, as a one-page printable item, with no upsell.
Applicable scenarios
Suitable for job seekers to self-check the readability and match of their resume in ATS, especially for online application scenarios. The official recommendation is that when applying online, .docx format is the most universally readable for ATS; when emailing directly to a recruiter, a text-based PDF is also acceptable; never submit images or scanned PDFs.
Limitations and notes
Multi-column layouts, tables, text boxes, headers/footers, icons, and graphics usually disrupt ATS parsing; a clean single-column layout with standard headings usually outperforms a highly designed template. This tool only checks the above ATS-related dimensions and does not involve other resume optimization functions. The official page also lists paid resume tools and templates made by other creators on Gumroad, but explicitly states that these are independent recommendations, not paid promotions, and that the tool provider is not the seller. Regarding pricing: the checking tool itself is free and open source; the third-party product prices mentioned on the page (such as $20, $5, $17) belong to external creators' products and are unrelated to the free checking tool.
