On this page
- What is an ATS checker?
- How an ATS reads your resume
- How the Kandiq ATS checker works
- The 12 checks of the ATS resume checker
- What is a good ATS score?
- Why resumes fail an ATS scan
- ATS keywords: match your resume to the job posting
- PDF or Word: what does an ATS scanner read best?
- No photo on a US resume
- ATS checker or the Notepad test?
- ATS and AI screening: what changes for you
- Questions
What is an ATS checker?
ATS stands for applicant tracking system: the hiring software where your application lands when you apply on a company career site or through a job board. The ATS opens your file, pulls out your name, email, phone, job titles, dates, skills and education, and stores them in a candidate profile that recruiters search and filter. It happens before a person reads a single line.
An ATS checker (also called an ATS scanner or ATS resume checker) runs that same reading on your resume before you send it. It tells you what the software would extract, what it would miss, and how well your resume matches the words of the job posting. You find the problems while you can still fix them.
A few applicant tracking systems you will meet in a US job search:
- Workday and Oracle Taleo, common at large corporations, hospitals and universities.
- Greenhouse, Lever and iCIMS, widely used by tech companies and mid-size employers.
- The ATS behind a job board: when you apply through LinkedIn or Indeed, your resume often ends up in the employer's own system.
How an ATS reads your resume
Contrary to a popular belief, most ATS software doesn't "reject" resumes on its own. It makes them searchable. The real filter is the search. A resume that parses badly gives an incomplete profile, and an incomplete profile doesn't come up when a recruiter searches for "project manager", "Salesforce" or "5+ years of experience". Your application exists, but nobody finds it: it's the most common reason qualified applicants never hear back.
- Intake: your resume enters the ATS from the application form or the job board.
- Parsing: the software turns your file into data, field by field.
- Search and filters: recruiters query the database by job title, keyword, years of experience, location or knockout questions.
- Human review: only the profiles that come up in that search get opened and read.
How the Kandiq ATS checker works
The ATS checker reads your resume the way an applicant tracking system does: it extracts the text, rebuilds your sections, dates and skills, then runs 12 ATS checks. The result is one ATS score out of 100 that combines ATS readability, the content of your resume and, when you name a job or paste a posting, how well you match it.
- Automated reading: the text is recovered in the order an ATS would follow. A sidebar that gets mixed into your work history shows up right away.
- Structure: headings, dates and contact details are looked for where a parser expects them.
- Content: your job title, skills and keywords are compared with the job you want.
- Score: every lost point is explained, with the fix that wins it back and the number of points left to reach green.
No AI model gives the score: it comes from fixed, weighted rules, so the same file always gets the same result. That is what lets you measure the effect of each fix and scan again as often as you like.
The 12 checks of the ATS resume checker
| Check | What the ATS resume checker looks at |
|---|---|
| Contact details can be extracted | Full name, email and phone written as text, the phone in a standard format like (614) 555-0123. |
| Job title at the top | A title under your name: it's the first field the ATS indexes, and recruiters search by title. |
| Recognized section headings | "Work Experience", "Education", "Skills" are recognized; "My Journey" is not. |
| Single-column reading order | A sidebar can get mixed into the main text when older parsers read the page line by line. |
| Dates in month/year format | A position without a start date is left out of filters like "3+ years of experience". |
| Skills spelled out | Tools and skills named in words, the way postings write them, not as bars or rating dots. |
| Keywords from the target job | The share of the posting's terms your resume contains, once you paste it. |
| No decorative characters | Emoji, arrows and icons come out blank and can cut off the next sentence. |
| Readable font size and margins | Below 9 pt, extraction merges neighboring lines. |
| No photo | US resumes don't include one, and an image in the header throws off some parsers. |
| One to two pages | Beyond two pages, many systems index only the beginning. |
| Real text PDF | A scanned PDF is an image: there is nothing for the ATS to read. |
These ATS checks are part of the AI resume checker, which also reviews the substance of your resume: what the hiring manager reads once the system has found you.
What is a good ATS score?
A good ATS score is one where you lose nothing on the critical checks: contact details extracted, real text, complete dates. Those are the ones that empty out your candidate profile. After that come the content checks (job title, skills, the posting's vocabulary), which decide whether you show up in recruiters' searches. The report tells you how many points you need to reach green, and in what order to fix things.
- Contact incomplete: write your full email and cell phone as text, under your name, not as an icon alone.
- Two columns detected: switch to a single-column template, or test another design.
- Missing dates: add a start month and year (and an end date) to every position.
- Few posting keywords: bring in the terms that truly describe your experience.
- Too long: cut positions older than ten years and bullets with no measurable result.
Why resumes fail an ATS scan
- A two-column template exported from a design tool: it looks great, and parses out of order.
- Skill bars and star ratings with no word next to them: the software only sees shapes.
- Creative headings ("Where I've Been", "What Drives Me") that the ATS doesn't know where to file.
- Text inside an image, often the header with your name and phone: the profile comes out empty.
- A scanned resume or a photo of a printout: there is no text left to extract.
- Contact details only in the page header or footer: some parsers can miss those zones.
- Tables used for layout: some cells are read in the wrong order, or lost.
ATS keywords: match your resume to the job posting
Recruiters search their ATS with the words from their own job posting. Paste the posting you are targeting (its link, or its text if the site needs a login): the ATS resume checker then compares your resume, term by term, and lists what's missing. Only add what's true: a keyword you can't back up won't survive the interview.
The posting asks for: "inventory management", "Excel", "customer service".
On the resume: "Managed inventory for a 9,000 sq ft store and built the weekly Excel replenishment report; trained 6 associates in customer service."
Kandiq can also tailor your resume to a posting with AI. It proposes new wording, and you keep only what is accurate. Tailoring uses 5 AI credits; a new account starts with 5. For the skills themselves, see our guide to skills for your resume, and for the top of the page, our resume summary examples.
PDF or Word: what does an ATS scanner read best?
Both work as long as the text is real text. A PDF keeps your layout identical on every computer; a Word file is sometimes requested by staffing agencies that edit resumes before passing them on. Send what the posting asks for and, if it says nothing, a PDF exported from your editor.
| Exported PDF | Word (.docx) | Scanned PDF or image | |
|---|---|---|---|
| Parsed by an ATS | Yes | Yes | No |
| Keeps your layout | Yes | It depends | Yes, but unreadable |
| Editable by a recruiter | No | Yes | No |
No photo on a US resume
In the United States, a resume has no photo, no date of birth and no marital status. The EEOC states that employers should not ask applicants for a photograph, since it can reveal characteristics that hiring decisions must not rest on. Many employers set aside resumes with a photo to stay clear of discrimination claims, and an image in the header also confuses some parsers.
That's why the ATS resume checker flags any photo on a resume written in American English. Your face belongs on your LinkedIn profile, which recruiters open right after reading your resume: see our LinkedIn headshot tool.
ATS checker or the Notepad test?
A popular trick is to copy all the text of your PDF and paste it into Notepad or TextEdit. If it comes out jumbled, an ATS will struggle too. It's a good first check, and it's free. But it won't tell you whether your dates are complete, whether your headings are standard, whether a photo is in the way, or which terms of the posting are missing. An ATS resume checker does all of that in one pass, and gives you a score to measure each fix.
If your first job search starts with an empty work history, look at our resume with no work experience example: it shows how to fill the same ATS sections with projects, coursework and volunteer work.
ATS and AI screening: what changes for you
Applicant tracking systems add more AI every year: automatic ranking, profile summaries, chat-based screening questions. For you, the difference is small. AI screening still needs a resume whose text parses cleanly and that uses the words of the job. No AI can find experience that isn't written down.
At the end of the process, a person still decides, after opening your resume and often your LinkedIn profile. Look after both: the ATS counts matches, the hiring manager looks for reasons to call you.
Frequently asked questions.

About the author
Diego Benitez
Founder of Kandiq, more than 100 hires led
Diego Benitez has hired more than a hundred people, in marketing, sport and sales, as a manager at Intersport and then as Head of Growth at Goodvest (2022 to 2026). He ran those hiring processes from start to finish: screening applications, interviews, the hiring decision, then managing the team. He also knows the candidate's side: internships, work-study, student jobs, a permanent contract, starting an agency, then freelancing. He built Kandiq to give candidates what he looked for in an application himself, and what screening software can read. His guides start from the questions candidates ask Google, rely on official public sources (government employment and careers services, employment law) and are updated when the rules change. The examples are fictional; the figures are sourced.

