What an ATS actually does
An applicant tracking system is the database a company runs its hiring through. When you apply, it parses your resume into fields (name, contact details, each job with its dates, education, skills), stores the result against the job, and lets recruiters search and filter across every applicant. Around 87 percent of large employers in the US, UK, Canada and Australia use one, and most mid-sized companies do too. A few systems produce a match percentage against the posting, but in most of them the ranking is done by a recruiter typing a search: a title, two or three skills, a location. If the parser could not read your resume, or the words the recruiter searches for are not on it, you are not in the results. That is the whole game, and it is why the two things that matter most are clean parsing and the right vocabulary.
How the score is calculated
Nobody outside the vendor can see how a specific ATS ranks candidates, so this checker does not pretend to. It runs eight checks that stand in for what a parser and a recruiter search actually do, weights them, and adds them up to a number out of 100. Keyword match is 40 percent: the checker pulls the 25 most important terms from the posting (skills, tools, certifications and title words, ranked by how often and how early they appear) and counts how many are on your resume. Standard sections are 15 percent: it looks for Experience, Education and Skills headings. Impact language is 15 percent: how many bullets start with a strong verb and how many contain a number. Contact details, formatting risks and length are 10 percent each. Two more checks, the hard-skill versus soft-skill split and the job title match, are shown but do not change the number. Every check tells you what it found and the one change that would fix it.
How to fix a low score
Tailor the resume to each posting rather than sending one version everywhere; the keyword list changes with every job, and so should your Skills section and your first two bullets. Mirror the exact phrasing the posting uses. If it says "stakeholder management" and you wrote "worked with senior leaders", the search will not find you, even though you mean the same thing. Put skills in a Skills section and also in context, inside a bullet that shows you using them, because some systems weight a skill more when it appears near a job and a date. Use plain headings: Experience, Education, Skills. Save as .docx or a simple text-based PDF, and avoid tables, two-column layouts, text boxes, images and icons, which parsers routinely scramble or drop. Write dates as Jan 2022 to Mar 2024 so every job gets a start and an end the system can read. Then paste the new version back in here and check it again.
What not to do
Do not stuff keywords. A Skills section with 60 items, or a bullet that lists every tool from the posting, reads as padding to the recruiter who opens the file, and the recruiter is the one who decides. Do not hide keywords in white text or a tiny font; the parser reads them, the recruiter sees a wall of nonsense when the text is highlighted, and several systems now flag it. Do not claim a skill you do not have to win a match; the keyword gets you the interview, and the interview is where it falls apart. If a keyword is missing and you genuinely have the experience, add it. If you do not, leave it out and let the rest of the resume make the case.
Once the resume is in shape, the cover letter generator writes the letter to match it, the job search guides cover LinkedIn, gaps and follow-ups, and the jobs board has live listings to apply to.
FAQ
What is an ATS resume checker?
A tool that reads your resume the way an applicant tracking system does and reports what it finds: which keywords from the job posting are present or missing, whether the standard sections and contact details can be found, formatting that parsers struggle with, and how strong your bullets are. This one runs entirely in your browser and gives you a score out of 100 with a fix for each check.
What is a good ATS score?
80 or above is strong, 60 to 79 is fair, and under 60 means the resume needs work before you send it. Treat the number as a guide rather than a verdict. No checker can see how a specific employer's system ranks candidates, and most recruiters find people by searching for a title and a few skills, so the keyword list matters more than the last five points.
Does formatting really matter for ATS?
Yes, though less than the horror stories suggest. Modern parsers handle plain .docx and text-based PDFs well. What still breaks them is tables, two-column layouts, text boxes, headers and footers that hold your contact details, images, icons and unusual bullet symbols. Dates without a month, such as 2022 to 2024, also parse badly. One column, plain headings and Mon YYYY dates fix nearly all of it.
Should I use the same keywords as the job description?
Use the exact phrasing for anything you genuinely have. Recruiters search for the words in their own posting, so "project management" will not be found if you wrote "managed projects". Put each skill in the Skills section and again in a bullet that shows you using it. Do not add keywords for skills you lack, and do not repeat one term ten times; a human reads the file next.