What an ATS resume checker actually does
An ATS resume checker simulates how an applicant tracking system parses and evaluates your resume. Most tools do some combination of these three things:
1. Parse your resume
Extracts text from your resume file and checks whether sections, dates, contact information, and experience are correctly identified. A parsing failure means your resume is submitting broken data to employers — this is a more critical problem than keyword gaps.
2. Score keywords against a job description
Compares your resume's content to a specific job posting and identifies which required keywords are present and which are missing. This is the most commonly advertised feature and the one most people think of when they hear "ATS checker."
3. Flag formatting issues
Identifies elements that ATS systems commonly misparse: multi-column layouts, tables, text boxes, headers/footers with contact information, unusual fonts, image-based content, and non-standard section headings.
What ATS checkers don't do:
- They don't replicate any specific employer's ATS system. Each ATS (Workday, Greenhouse, Lever, Taleo, iCIMS) parses differently. Checkers approximate general parsing behaviour, not the exact system a given employer uses.
- A high score doesn't guarantee interview calls. The checker evaluates technical ATS compatibility and keyword match — it doesn't assess the quality or relevance of your experience, which human reviewers evaluate.
- They don't guarantee you'll pass every ATS. They significantly reduce the probability of preventable technical failures.
When to use an ATS checker:
- Every time you update your resume
- When applying to a role where you believe your experience is a strong match but you're not getting responses
- When you've changed your resume design or template
- Before a high-priority application
LoopCV resume checker
LoopCV includes an ATS resume checker as part of its job search automation platform. Unlike standalone checkers, LoopCV's checker is integrated into the application workflow — you check your resume against real job descriptions, fix the gaps, then let LoopCV automatically apply to matching roles with the optimised version.
What it checks:
- ATS parseability: contact information, section headings, date formats, layout structure
- Keyword match against specific job descriptions
- Missing skills and qualifications relative to your target roles
- Formatting issues that cause parsing failures
How to access it:
Create a free LoopCV account to run your resume check. After your check, LoopCV can apply to matching job listings automatically using your optimised resume — so the optimisation work you put in gets applied across every relevant application, not just one.
Best for: job seekers who want both resume feedback and automated application volume. The checker and the automation work together — you optimise once, apply continuously.
Other ATS resume checkers compared
Jobscan
The market leader for keyword-based ATS checking. Paste your resume and a job description — Jobscan gives you a match score, flags missing keywords, and suggests edits. Strong on keyword analysis; lighter on formatting checks.
- Free tier: limited scans per month
- Paid: $49.95/month, unlimited scans, cover letter matching
- Best for: candidates tailoring to specific roles who want detailed keyword analysis per application
Enhancv Resume Checker
AI-powered checker that scores across multiple dimensions: ATS compatibility, readability, experience presentation, and section completeness. The scoring rubric is broader than pure keyword matching.
- Free tier: available with account creation
- Paid: part of Enhancv subscription (~$25/month)
- Best for: candidates who want holistic feedback on resume quality, not just ATS keywords
Skillsyncer
Free ATS scanner that compares your resume to a job description and scores keyword match. Lightweight and fast; fewer features than Jobscan but free without significant usage limits.
- Free tier: unlimited basic scans
- Best for: candidates running high-volume searches who want quick keyword checks without a paid subscription
Teal Resume Builder (with ATS check)
Teal's resume builder includes an ATS score checker alongside resume building tools. Useful if you're building and checking in the same workflow.
- Free tier: limited saves; paid plan ~$29/month
- Best for: candidates building their resume from scratch who want integrated feedback
myperfectresume ATS Checker
Broad scoring across 30+ criteria including structure, content, and ATS compatibility. The score breakdown is more granular than most free tools.
- Free tier: available; some features gated
- Best for: candidates wanting a detailed breakdown of what to fix beyond keywords
| Tool | Best for | Keyword check | Formatting check | Auto-apply | Free tier |
|---|---|---|---|---|---|
| LoopCV | Checking + applying at scale | ✓ | ✓ | ✓ | ✓ |
| Jobscan | Deep keyword analysis per role | ✓✓ | Partial | ✗ | Limited |
| Enhancv | Holistic resume quality | ✓ | ✓ | ✗ | ✓ |
| Skillsyncer | Quick free keyword check | ✓ | Partial | ✗ | ✓ |
| Teal | Build + check together | ✓ | ✓ | ✗ | Limited |
How to interpret your ATS score
Every tool scores differently, but the principles for interpreting results are consistent.
Match scores (keyword-based):
A score like "67% match" means roughly 67% of the keywords the tool identified in the job description are present in your resume. This is a directional indicator, not a precise threshold.
- Below 50%: significant keyword gaps — review the missing terms and add any you genuinely have experience with
- 50–70%: reasonable match — likely missing some role-specific tools or terminology worth adding
- 70–85%: strong keyword match — focus on ensuring keywords appear in context (not just the skills section) and that formatting is clean
- Above 85%: don't add more keywords for the sake of score — at this point you're optimising for a machine at the expense of human readability
Formatting scores:
These are typically binary flags rather than percentages: "contact information not detected," "multi-column layout detected," "tables found." Each flag is a specific fix — address the ones that are confirmed issues (not every flag is a real problem in every ATS).
What a good score doesn't tell you:
- Whether your experience is actually relevant to the role
- Whether your achievements are compelling
- Whether a human reviewer will read it past the first scan
- Whether the specific employer's ATS parsed it the way the checker predicted
Use scores as diagnostics, not report cards. A resume that scores 74% and clearly communicates relevant experience is better than one that scores 91% through keyword stuffing.
What to do after your ATS check
Running the check is step one. Here's what to do with the results.
Priority 1: Fix formatting failures
If the checker found that your contact information wasn't detected, your sections weren't labelled, or your layout is multi-column — fix these first. Formatting failures affect every application; keyword gaps affect only the specific roles where you're missing terms.
Priority 2: Add genuinely missing keywords
Go through the missing keywords list and add any that reflect skills you actually have. Place them in context in your experience bullets, not just appended to the skills section. For each keyword you add, there should be a sentence in your experience section that demonstrates you've used it.
Priority 3: Don't add keywords you don't have
An ATS checker score of 80% achieved partly through fabricated keywords will pass the scanner and fail the interview. Hiring managers probe the skills on your resume. "Python" in your skills section will be tested if it's in the requirements — add it only if you can answer Python questions in an interview.
Priority 4: Maintain a tailored version, not a fixed resume
Optimise your resume for the specific job description. Keep a master version with all your experience. For each application, tailor the summary and adjust keywords to match the role — using LoopCV's integrated checker means you can do this once per application type rather than starting from scratch every time.
After checking — apply at volume:
The point of ATS optimisation is to get your resume in front of more humans. Once your resume is optimised, apply consistently — the best return on ATS checker investment is running optimised applications at scale, which is exactly what LoopCV's automated application system does after your check.