What is an ATS resume checker?

An ATS (Applicant Tracking System) resume checker analyzes your resume against a specific job description to see how well it would score in automated screening software used by recruiters. It identifies missing keywords, formatting issues, and areas where your resume may be filtered out before a human ever reads it.

Is the ResumeOS ATS scanner free?

Yes. The ResumeOS ATS scanner is completely free with no hidden paywalls or ads. You can run unlimited ATS scans, view your keyword ATS Score, and get AI-powered suggestions to improve your resume at no cost.

How does ATS keyword matching work?

Our ATS scanner uses semantic AI analysis to compare the skills, job titles, and qualifications in your resume against those in the job description. Unlike basic checkers that only look for exact word matches, ResumeOS understands synonyms and context — so "JavaScript" and "JS" are treated as the same skill.

What ATS systems does ResumeOS simulate?

ResumeOS models the parsing behavior of major ATS platforms including Workday, Greenhouse, Lever, iCIMS, Taleo, and BambooHR. Our parsing engine is trained on how each system reads resume structure, section headers, and keyword density.

How do I make my resume ATS friendly?

To make your resume ATS friendly: use standard section headings (Experience, Education, Skills), avoid tables and text boxes, include keywords from the job description naturally in your bullet points, use a clean single-column layout, and save as a .docx or simple .pdf. ResumeOS will flag all of these issues automatically.

What is a good ATS resume score?

A score of 75% or higher is generally considered a good ATS match. Scores above 85% significantly improve your chances of passing automated screening. ResumeOS provides a detailed breakdown so you know exactly which areas to improve.

ATS compatibility

Check if your resume passes ATS

Get ATS Score, missing keywords, and improvements based on parsing tuned for how recruiters and ATS systems read resumes.

Start ATS scan Select resume & JD

500k+

Resumes Scanned

99.2%

Parsing Accuracy

12s

Avg Scan Time

Analysis Report

Sr. Product Designer Role

Draft #4

78Score

ReadabilityExcellent

FormattingNeeds Fix

Critical Keywords Found

UI DesignDesign SystemsFigma

Missing Top Skills

Agile MethodologyStakeholder Management

View full analysis

ATS Compatibility

Passed Workday Filter

Why scan with ResumeOS?

Semantic Skill Analysis

Our AI doesn't just look for exact word matches. It understands synonyms and context, ensuring your experience is mapped accurately to the job requirements.

Live Editing

Fix issues in real-time and see your score update instantly with our integrated editor.

Hard & Soft Skills

Dedicated breakdown of technical proficiencies versus leadership traits.

Bullet Improvement

AI suggestions to transform passive duties into high-impact accomplishments.

Unparseable Content

Identify hidden graphics or complex layouts that confuse ATS systems.

Frequently asked questions

What is an ATS resume checker?: An ATS (Applicant Tracking System) resume checker analyzes your resume against a specific job description to see how well it would score in automated screening software used by recruiters. It identifies missing keywords, formatting issues, and areas where your resume may be filtered out before a human ever reads it.
Is the ResumeOS ATS scanner free?: Yes. The ResumeOS ATS scanner is completely free with no hidden paywalls or ads. You can run unlimited ATS scans, view your keyword ATS Score, and get AI-powered suggestions to improve your resume at no cost.
How does ATS keyword matching work?: Our ATS scanner uses semantic AI analysis to compare the skills, job titles, and qualifications in your resume against those in the job description. Unlike basic checkers that only look for exact word matches, ResumeOS understands synonyms and context — so "JavaScript" and "JS" are treated as the same skill.
What ATS systems does ResumeOS simulate?: ResumeOS models the parsing behavior of major ATS platforms including Workday, Greenhouse, Lever, iCIMS, Taleo, and BambooHR. Our parsing engine is trained on how each system reads resume structure, section headers, and keyword density.
How do I make my resume ATS friendly?: To make your resume ATS friendly: use standard section headings (Experience, Education, Skills), avoid tables and text boxes, include keywords from the job description naturally in your bullet points, use a clean single-column layout, and save as a .docx or simple .pdf. ResumeOS will flag all of these issues automatically.
What is a good ATS resume score?: A score of 75% or higher is generally considered a good ATS match. Scores above 85% significantly improve your chances of passing automated screening. ResumeOS provides a detailed breakdown so you know exactly which areas to improve.