How to pass an ATS in 2026: what the software actually checks

Q.Does an ATS automatically reject your CV?

No — and the people who actually run these systems say so themselves. In a 2025 study, the CV-tools company Enhancv interviewed 25 US recruiters across tech, healthcare, finance and other sectors: 92% said their systems do not automatically reject applications based on formatting, design, missing keywords, or a low match score. Only about 8% used any automatic rejection at all, and only for hard "knockout" requirements — a legally required licence, or work authorisation.

So where did "75% of resumes are never seen by a human" come from? It traces back to a 2012 sales pitch by a resume-optimisation company called Preptel, which went out of business in 2013 and never published any methodology. It's been repeated for over a decade by template sellers and social posts — but it was never a finding. It was marketing.

Here's the part that is real, and worth taking to heart: if you're genuinely qualified and still getting passed over, you're not imagining it. Rigid screening does filter out capable people — not out of malice, but by matching exact criteria too literally. A 2021 study by Harvard Business School's Project on Managing the Future of Work and Accenture, Hidden Workers: Untapped Talent, found that 88% of employers agreed qualified, high-skilled candidates get screened out simply because they don't match the precise criteria in a job description (rising to 94% for middle-skills roles). The same report estimated more than 27 million "hidden workers" in the US — capable people whose applications quietly get passed over. If that's been your experience, it's often less about your ability than about a system reading too literally — and that's something you can work with.

The takeaway: the danger was never a robot deleting you. It's a system matching exact criteria, plus sheer volume — and the fix is reassuringly concrete: make your match obvious, and make your CV easy for the software to read.

Q.What does an ATS actually do?

Think of an ATS as four steps: parse → store → search → rank. As the University of Virginia's career center explains, the system scans your CV, compares it against the job description, and helps recruiters sort a large pile of applications; it often scores each CV by how well it matches, and recruiters then either work through the ranked list or search the database by keyword. Common systems you'll meet include Workday, Greenhouse, Lever, iCIMS and Taleo.

Two things follow from that, and both are good news:

• The match score is a hint, not a verdict. Many recruiters use it only to order the pile, and some ignore it. A high score doesn't guarantee an interview, and a middling one doesn't doom you — a human still decides.
• The reason most applications get no reply is scale, not software. A single posting can attract hundreds of applicants — CareerPlug's 2025 analysis of millions of applications put the average near 180 applicants per hire — and overloaded humans gravitate to the CVs that are obviously relevant. Being easy to read and clearly on-target is simply how you rise in that pile.

Q.What actually gets your CV filtered out?

Three real things — none of them mysterious, and all of them in your control:

1. The parser can't read your layout. Columns, tables, text boxes, and graphics get scrambled or dropped, so your experience never makes it into the database cleanly.
2. Your CV doesn't obviously match the job. If the role asks for specific skills, tools, or a job title and they're nowhere on your CV, neither the search filter nor the human finds you.
3. Weak content. Even when a person reads it, a CV that lists duties instead of results doesn't stand out. Harvard's Mignone Center for Career Success is blunt about this: lead with action verbs, show results, and quantify them — "responsible for managing a team" is far weaker than "managed a team of 8 and cut onboarding time 30%."

And here's what does not filter you, whatever the internet tells you — so you can stop worrying about it: background shading or colour (an ATS ignores shading), going slightly over one page (the ATS doesn't penalise length — that's a human-reading preference), or skipping an "objective" line.

Q.How should you format a CV so an ATS can read it?

The single highest-leverage rule: use one column, left-aligned. Multi-column layouts are the most common way to get scrambled, because many parsers read straight across the page and interleave your two columns into nonsense. University career centers are unusually consistent here — Virginia, Pittsburgh and Ohio Northern all give the same checklist:

• One column, left-aligned — not centred or justified.
• No tables, text boxes, columns, images, or graphics. Parsers drop or jumble them; anything inside a text box often isn't read at all.
• Standard section headings — "Work Experience," "Education," "Skills" — not creative labels like "What I've Done," which the system may fail to map.
• Standard fonts (Arial, Calibri, Georgia, Times New Roman), 10–12pt, one colour.
• Put your contact details in the body of the document, not the header or footer. Most ATS can't read header/footer text, so a name or email placed there can vanish. Your top line should be just your name.
• Margins 0.5–1 inch. Skip page numbers in the body.

A photo deserves its own note: it can break parsing, and in most English-speaking markets it also invites bias, so leave it off for ATS submissions. (In parts of Europe a photo is still expected — those country-by-country norms are covered in our European CV guide.)

Q.PDF or Word — which file should you upload?

Both work for most modern systems, so you can relax about this one. As UVA's career center notes, a PDF, .doc or .docx is fine for most submissions, and a PDF has the advantage of holding your layout together across devices. Older or stricter systems sometimes parse .docx more reliably, so if you're unsure, Word is the safe fallback.

There are only two real traps:

• Never upload an image-based PDF. A CV you "printed to PDF" or exported as a picture contains no selectable text, so the parser sees nothing. Pittsburgh's career center spells it out: save or export as PDF — don't print to PDF.
• If the posting names a format, use that. Following instructions is itself part of the screen.

The reliable check takes five seconds: open your PDF and try to highlight a sentence with your cursor. If the text selects cleanly, the parser can read it. If you can't select it, neither can the ATS.

Q.How do you check your CV parses correctly?

You don't have to guess, and you don't have to hope. Three quick tests, in order of usefulness:

1. The cursor test — can you select the text in your PDF? (If not, it's an image.)
2. The copy-paste test — paste your whole CV into a plain-text editor. If sections jump out of order or disappear, the parser will see the same mess. This is the fastest way to catch a broken two-column layout.
3. A parse preview — run your CV through a CV-and-job-description analyser and look at the parsed output: which fields it actually extracted (name, titles, dates, skills), not just a score. That's what tells you whether your content survived.

This is the honest version of an "ATS score," and it's how CVder's check is built: it shows you what was matched and what's missing against a specific job, rather than handing you a black-box number to worry over. The point isn't to chase a percentage — it's to confirm the machine read what you wrote.

Q.Do keywords matter — and how many?

Yes — but it's about matching, not stuffing, and that distinction takes a lot of the pressure off. Read the job description and mirror the exact terms it uses — the named skills, tools and job titles, especially ones that appear more than once — and place them where they're genuinely true: in your skills section and, better, inside your experience bullets. UVA's guidance is to pull the hard and soft skills that recur in the posting and work them in through action verbs.

Two limits keep this honest:

• Don't list skills you don't have to "trick" the system. Ohio Northern's career guide names this directly — it backfires the moment a human reads the CV, and recruiters spot padding fast.
• There's no magic number. Chasing a keyword count is the wrong game; relevance is the right one.

The full method for matching a CV to a posting lives in our tailoring guide; the narrower question of how many keywords and how to avoid stuffing is covered in Resume keywords: how many is too many?.