Free Resume Keyword Scanner — Find Every Missing ATS Keyword
Paste your resume, compare up to three job descriptions side by side, and instantly discover which keywords you're missing. 100% client-side — your data never leaves your browser.
Resume alignment studio
Your resume
Format freely or import an existing document.
Job descriptions
Add resume and job details to begin.
Missing keywords
Select a term to insert it.
Your keyword opportunities will appear here.
Matched language
Highlighted cleanly inside your resume.
No matches yet.
Why You Need a Free Resume Keyword Scanner
Over 75% of companies use Applicant Tracking Systems (ATS) to filter resumes before a human recruiter ever sees them. These systems scan your resume for specific keywords that match the job description. If your resume is missing critical terms, it gets automatically rejected — regardless of your actual qualifications. Our free resume keyword scanner helps you identify exactly which keywords your resume is missing so you can close those gaps before you apply.
What Is a Resume Keyword Gap Checker?
A resume keyword gap checker is a tool that compares your resume against a job description and highlights the keywords you are missing. Instead of manually reading every job posting and guessing which skills matter, our scanner extracts the most important hard skills, soft skills, certifications, and tools from the job description and shows you exactly which ones are already in your resume and which ones are absent. This gives you a clear, actionable list of terms to add before you hit submit.
How to Scan Your Resume for Missing Keywords
Using our free resume keyword scanner is simple. First, paste the full job description into the tool. Then, paste your resume text. Our client-side algorithm instantly extracts keywords from both documents, compares them, and shows you a live match score along with a categorized list of missing keywords. You can compare up to three job descriptions at once, making it easy to tailor a single resume for multiple roles or find the common keywords across similar positions.
The Problem with Most ATS Tools
Most popular ATS checkers like Jobscan and Resume Worded charge $25–$50 per month or limit you to a handful of free scans before requiring a credit card. Worse, they often force you to upload your resume to their servers, creating a privacy risk. Our tool is different. It runs entirely in your browser. No account. No upload. No server. Your resume data stays on your device, and you can scan as many job descriptions as you want without ever paying a cent.
What Keywords Do Resume Scanners Look For?
ATS scanners and recruiters look for keywords that reflect the specific requirements of the job posting. These typically include hard skills like programming languages, software tools, and certifications (e.g., "Python," "Salesforce," "AWS Certified"), soft skills like "leadership" and "communication," and industry-specific terminology. The most important keywords are the ones that appear multiple times in the job description or are listed as required qualifications. Our scanner weights these terms automatically so you know which gaps matter most.
Tips for Better Keyword Coverage
To improve your ATS keyword match score, weave missing terms naturally into your experience and skills sections rather than stuffing them into a random list. Use the exact phrasing from the job description whenever possible, since many ATS systems use exact-match logic. Include both acronyms and full terms (e.g., "AWS" and "Amazon Web Services") to cover all matching patterns. Focus on 10–15 highly relevant keywords per job rather than trying to include every single term. And always re-scan your updated resume to see how your score improves before you apply.
Frequently Asked Questions
Everything you need to know about scanning your resume for ATS keywords and closing keyword gaps.
What is a resume keyword scanner and how does it work?+
A resume keyword scanner is a tool that compares your resume text against a job description to identify which keywords you are missing. Our scanner extracts important terms — including hard skills, tools, certifications, and industry jargon — from the job description and checks whether they appear in your resume. It then shows you a match score and a categorized list of missing keywords so you can optimize your resume before applying.
Is this resume keyword scanner really free and private?+
Yes. Our tool is 100% free with no signup, no credit card, and no usage limits. More importantly, it is 100% client-side — your resume and job descriptions are processed entirely in your browser using JavaScript. Nothing is uploaded to any server, stored in a database, or shared with third parties. When you close the page, all data is gone.
What is a good ATS keyword match score?+
A keyword match score of 60% or higher is generally considered good and gives your resume a strong chance of passing ATS filters. Scores between 40% and 60% are borderline — your resume may or may not get through depending on the ATS platform and competition. Below 40%, your resume is at high risk of being filtered out before a recruiter ever sees it. Our scanner helps you identify the missing keywords needed to push your score above 60%.
Can I compare my resume against multiple job descriptions?+
Yes. Our tool lets you compare your resume against up to three job descriptions simultaneously. This is especially useful when you are applying for similar roles at different companies and want to identify the common keywords across all postings. You can also use this feature to tailor one resume for multiple openings or discover which skills are most in-demand for your target role.
Will adding keywords guarantee I pass the ATS?+
No tool can guarantee an ATS pass, because different companies use different ATS platforms (Workday, Greenhouse, Lever, iCIMS) with different scoring algorithms. However, keyword optimization is the single most important factor you can control. Our scanner helps you close honest keyword gaps by showing you which terms from the job description are missing from your resume. Combine this with clean formatting, a single-column layout, and relevant experience to maximize your chances.