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ATS Resume Checker — Help Guide

Everything you need to know to check your resume against a job description, understand your ATS score, fix missing keywords and improve your chances of getting past automated screening.

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Your resume is 100% private. It is read entirely within your browser using JavaScript — it is never uploaded to any server, stored in any database, or seen by WorkersPool. You can disconnect from the internet after loading the page and the tool will still work.

What Does the ATS Resume Checker Do?

The WorkersPool ATS Resume Checker analyses your resume against a specific job description and tells you how well it would perform in an Applicant Tracking System (ATS) — the automated software that most employers use to screen applications before a human reads them.

You upload your resume (or paste the text) and paste the job posting. The tool compares the two and produces an ATS compatibility score out of 100, identifies which keywords from the job posting are present in your resume and which are missing, checks your resume's formatting and structure, and gives you specific actionable recommendations to improve your score.

Studies suggest over 75% of resumes are rejected by ATS before a human ever reads them. This tool helps you understand and fix the specific reasons your resume might be filtered out.

Who Is This Tool For?

Job seekers applying to companies that use ATS software — which is most medium and large employers

Anyone who has applied to many jobs without hearing back and suspects their resume is being filtered out

Career changers whose resume needs to be reframed using new industry keywords

Recent graduates whose resumes may lack specific terminology used in job postings

Experienced professionals who have not updated their resume recently

Anyone applying to roles at companies that use Workday, Greenhouse, Lever, Taleo or iCIMS

Key Features

ATS score out of 100
Keyword match analysis
Missing keywords identified
Format & structure checks
Actionable fix recommendations
PDF, DOCX and TXT support
Paste text option
100% browser-side — private

Step-by-Step Instructions

  1. Upload your resume or paste the text Click the Upload File tab and drag your resume into the drop zone, or click to browse. Supported formats: PDF, DOCX, TXT (max 5 MB). If your PDF contains scanned images rather than real text, use the Paste Text tab instead — open your resume, select all, copy and paste it into the text area.
  2. Paste the full job description Copy the entire job posting text — including the requirements, responsibilities and any "nice to have" sections — and paste it into the job description box. The more complete the job posting, the more accurate the keyword analysis.
  3. Click Check My Resume The tool analyses both documents and produces your results instantly.
  4. Review your overall ATS score Your score appears out of 100. See the score guide below to understand what your number means and how urgently you need to act.
  5. Check the keyword panels Review Keywords Found (what is working) and Keywords Missing (what to add). Focus on the missing keywords — these are the terms the ATS is looking for that are not currently in your resume.
  6. Read the format checks and recommendations The Format Checks panel flags structural issues (missing sections, length problems, formatting that ATS systems struggle to parse). The Recommendations panel gives you specific actions ranked by impact.
  7. Update your resume and recheck Add missing keywords naturally where they genuinely apply, fix any format issues, then run the checker again to verify your score has improved. Use Check Another Resume to start fresh.

Understanding Your ATS Score

ScoreRatingWhat to do
80 – 100StrongYour resume is well-optimised for this role. Minor tweaks only.
70 – 79GoodSolid match. Add a few missing keywords and review format checks.
50 – 69Needs WorkMeaningful gaps. Address all missing keywords and format issues before applying.
Below 50Poor MatchSignificant keyword and/or format problems. Major revision recommended.

The score is made up of four components: Keyword Match (how many of the job posting's key terms appear in your resume), Format & Length (standard resume structure and appropriate length), Sections Found (presence of expected sections like Experience, Education, Skills) and ATS Readability (formatting that ATS parsers can process correctly).

Example: Kenji Checks His Resume for a Data Analyst Role

Kenji is a junior analyst applying for a data analyst role at a financial services firm. He uploads his resume and pastes the job posting. Here are his initial results:

First Check — Before Optimisation

ATS Score54 / 100
Keyword Match41% — needs work
Missing KeywordsSQL, Tableau, Power BI, data modelling, stakeholder reporting
Format Issue FoundNo Skills section detected
Top RecommendationAdd a dedicated Skills section listing technical tools

Second Check — After Adding Keywords & Skills Section

ATS Score81 / 100
Keyword Match78% — strong
Missing KeywordsPower BI (added), stakeholder reporting (added)
FormatAll sections found — no issues

Kenji added a Skills section listing SQL, Tableau and Power BI, and rewrote one bullet point to include "stakeholder reporting." His score jumped from 54 to 81 — moving him from the filtered-out zone into a strong match for this specific role.

What This Tool Does Well — and Where It Has Limits

Strengths

  • 100% private — resume never leaves your browser
  • Instant results — no waiting or account creation
  • Specific missing keywords identified, not just a score
  • Format checks catch structural issues ATS parsers struggle with
  • Actionable recommendations ranked by impact
  • Re-check after edits to verify improvement

Limitations

  • Different ATS platforms use different algorithms — no tool can predict every system perfectly
  • Cannot read scanned PDF images — use Paste Text for those
  • Score is an estimate, not a guarantee of passing any specific employer's ATS
  • Does not evaluate writing quality or career narrative
  • Does not account for employer-specific ATS configuration

Important Disclaimer

The ATS Resume Checker provides an estimated ATS compatibility score based on keyword matching and common formatting rules. Different ATS platforms (Workday, Greenhouse, Lever, Taleo, iCIMS and others) use proprietary algorithms that may differ from this tool's methodology. Results should be used as a guide to improvement — not as a guarantee of passing any employer's screening process. WorkersPool accepts no liability for job application outcomes.

Frequently Asked Questions

Is my resume really private?
Yes — completely. Your resume is processed entirely within your browser using JavaScript's FileReader API. Nothing is transmitted to WorkersPool servers at any point. You can verify this yourself: load the tool, disconnect your internet connection, then upload your resume and check it — it works offline because no server communication is involved.
What is an ATS and why does it matter?
An Applicant Tracking System (ATS) is software used by most medium and large employers to receive and automatically filter job applications. When you apply online, your resume is typically parsed by an ATS before any human reads it. The ATS scores your resume against the job description — resumes below a threshold score are often automatically rejected. Optimising for ATS means more of your applications reach human recruiters.
My PDF isn't loading — what do I do?
PDFs that contain scanned images (rather than actual text) cannot be read by the tool — this is a technical limitation of browser-based PDF parsing. If your PDF was created by scanning a printed document, switch to the Paste Text tab. Open your PDF in Adobe Reader or Preview, select all text (Ctrl+A or Cmd+A), copy it and paste it into the text area. If your PDF is a digital file and still fails, try exporting it as a DOCX from Word or Google Docs.
Should I add every missing keyword to my resume?
Only add keywords that genuinely reflect your experience. Keyword stuffing — adding terms you cannot actually speak to in an interview — is dishonest and can backfire badly if you are asked about them. Add missing keywords naturally where they accurately describe something you have done. If a keyword represents a skill you are learning, you can include it with context (e.g. "currently developing proficiency in Tableau").
What is a good ATS score?
A score of 70 or above is considered good for most roles. 80+ is strong. Below 50 indicates significant keyword or formatting gaps that should be addressed before applying. Keep in mind that the score is job-specific — the same resume will score differently for different job postings. Always check your resume against the specific job you are applying for.
Which ATS systems does this tool simulate?
This tool does not simulate any specific ATS platform. It analyses keyword match and formatting based on common ATS parsing behaviour and widely documented best practices. Major ATS platforms include Workday, Greenhouse, Lever, Taleo, iCIMS, BambooHR and SmartRecruiters — each has its own proprietary algorithm. This tool gives you a strong general optimisation baseline that applies across most systems.

Format Rules ATS Systems Hate

  • Tables and columns — ATS parsers often scramble text in multi-column layouts
  • Headers and footers — contact details in headers may be missed entirely
  • Images and graphics — ATS cannot read text inside images
  • Unusual section names — use standard headings: Experience, Education, Skills
  • Fancy fonts and colours — stick to standard fonts like Arial, Calibri or Georgia
  • PDF from image scan — always use a digitally created PDF
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