Parses like a real ATS
- Processes your resume through industry-standard ATS parsing engines.
- Detects formatting issues that cause fields to be misread or skipped.
- Checks section headers, date formats, and contact information parsing.
Free ATS Resume Checker
Free ATS Resume Checker
Our checker uses the same parsing engines as major ATS systems to detect formatting issues and keyword gaps that cause resumes to be filtered out.
Free resume optimizer
Optimize your resume for any ATS instantly
Upload your resume for a free ATS-optimized version. Add a job description to also get a match analysis and targeted cover letter. Only your email is required.
How It Works
How our ATS resume checker works
Resume Optimizer Pro uses the same parsing engines that major employers rely on — built on Sovren and Textkernel standards — to check your resume exactly the way an ATS would.
Identifies keyword gaps
- Compares your resume content against the target job description.
- Highlights missing skills, qualifications, and industry terms.
- Shows which keywords matter most for your match score.
Fixes issues automatically
After checking your resume, download an ATS-optimized version with formatting issues corrected and keywords aligned to the job description.
The free version includes a watermark. Upgrade to remove the watermark and access full editing and template features.
Why It Matters
Why ATS compatibility matters
Most resumes are filtered by software
Over 97% of Fortune 500 companies use applicant tracking systems to screen resumes before a human ever sees them. If your resume doesn't parse correctly, it may be filtered out regardless of your qualifications.
Formatting breaks are invisible to you
Your resume might look perfect in Word or as a PDF, but ATS systems read the underlying text structure. Tables, columns, headers, footers, and graphics can all cause parsing failures that you can't see by looking at the document.
Keywords drive match scores
ATS systems score resumes based on keyword relevance to the job description. Missing even a few critical terms can drop your score below the threshold, even if you have the experience the employer is looking for.
FAQs
Frequently asked questions
What is an ATS resume checker?
An ATS resume checker analyzes your resume the way an applicant tracking system would. It identifies formatting issues that cause parsing errors, checks keyword alignment with the job description, and scores your resume's overall ATS compatibility.
How does this checker differ from other ATS tools?
Resume Optimizer Pro is built by former ATS software engineers and uses Sovren and Textkernel parsing standards — the same engines used by major employers. Most free ATS checkers use basic keyword matching. Our tool checks actual parsing compatibility, not just word counts.
What formatting issues can it detect?
The checker detects common ATS-breaking issues including: tables and multi-column layouts that scramble content order, graphics and images that are invisible to parsers, non-standard section headers that ATS systems can't categorize, and date formats that fail to parse correctly.
Do I need a job description to check my resume?
A job description is optional but recommended. Without one, the tool checks formatting and parsing compatibility. With a job description, it also analyzes keyword alignment and gives you a match score specific to that role.
Which file types are supported?
Upload a .docx or .pdf resume file. For best ATS compatibility, we recommend .docx format, as some PDF files — especially those with complex layouts or created from design tools — can cause parsing issues with certain ATS systems.
Is the ATS check really free?
Yes. You can check your resume and view your ATS compatibility report for free. You can also download a watermarked optimized version. Upgrade to a paid plan to remove the watermark and access full editing, template, and cover letter features.
How do I know if my resume is ATS-friendly?
Upload your resume using the free checker above. It will parse your resume using the same engines that major ATS platforms use and flag any issues: broken formatting, unreadable sections, missing standard headings, or keyword gaps. If your score is above 70% and no formatting issues are detected, your resume is ATS-friendly.
Which ATS systems does this checker simulate?
Resume Optimizer Pro is built on Sovren and Textkernel parsing standards, which are the foundation for most major ATS platforms including Workday, Greenhouse, Lever, iCIMS, and Taleo. This means the checker accurately represents how the majority of employer ATS systems will read your resume.
Should I submit my resume as PDF or DOCX?
Submit as .docx whenever possible. Word documents have the highest parsing success rate across all ATS platforms. PDFs can work, but complex layouts, custom fonts, or design-tool exports often cause parsing failures. If the job posting specifically requests PDF, use a simple, text-based PDF created from Word or Google Docs.
Need an ATS-friendly template?
Download one of our 9 free resume templates, each tested against Taleo, Workday, Greenhouse, and iCIMS. Every section is recognized by all major ATS parsers.
Browse free templates →Ready to check your resume?
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