Most medium and large employers don’t read your resume first. Software does. An applicant tracking system (ATS) stores every application, turns each resume into structured data, and lets recruiters search, filter and rank candidates.
An ATS-friendly resume is one that this software can read correctly. Your name lands in the name field, your jobs land in the work history, and your skills can be found when a recruiter searches for them.
This guide explains what actually happens to your file, which formatting breaks it, and how to check yours before you apply.
What an applicant tracking system actually does
When you click “Apply”, three things usually happen:
- Parsing. The ATS extracts text from your PDF or Word file and splits it into fields: contact details, job titles, employers, dates, education and skills.
- Storing and searching. Recruiters search that data the way you’d search Google, for example “SQL” and “Tableau” with 3+ years in a given city.
- Ranking or filtering. Some systems score how well your profile matches the job. Others let recruiters add knockout questions, such as a required work permit or certification.
The common systems you’ll meet are Workday, Greenhouse, Lever, iCIMS, SmartRecruiters, Taleo and SAP SuccessFactors. They differ in detail, but they all depend on the same first step. If parsing goes wrong, the rest goes wrong with it.
A popular claim says “75% of resumes are rejected by ATS before a human sees them.” There is no solid study behind that number. The real risk is quieter: a badly parsed resume shows up with missing skills or a broken job history, so it ranks low in a recruiter’s search and nobody clicks it.
What ATS software struggles to read
Parsers read text from left to right and top to bottom. Anything that breaks that order or hides text causes errors.
| Element | What goes wrong | Do this instead |
|---|---|---|
| Tables and text boxes | Text gets read out of order or skipped | Use plain lines and tabs for alignment |
| Two or more columns | The left and right columns get merged line by line | Use one column for anything you send online |
| Headers and footers | Many parsers ignore them, including the contact details you put there | Put your name, email and phone in the body |
| Icons for phone, email, LinkedIn | Icons aren’t text, so the field may come through empty | Write “Email:” or just the address |
| Skill bars and star ratings | A bar has no words in it | List skills as words, with a level in words if needed |
| Images of text and scanned PDFs | There’s no text layer to read at all | Export from Word or Google Docs; never scan |
| Unusual section headings | “My journey” isn’t recognised as work history | Use “Experience”, “Education”, “Skills” |
| Fancy fonts and ligatures | Some letters turn into symbols or vanish | Use common fonts such as Calibri, Arial, Lato or Georgia |
A two-column design isn’t always fatal. Modern parsers handle many layouts. But you can’t know which system an employer uses, so for online applications one column is the safe choice. Keep the designed version for handing in at an interview.
The checklist for an ATS-friendly resume
Format
- File type: a PDF exported from a word processor, or a .docx. Both are fine for modern systems. Follow the job post if it asks for one.
- One column, no tables or text boxes, nothing important in the header or footer.
- Standard fonts at 10–12 pt, with clear bold job titles.
- Simple bullets (•), not arrows or emoji.
Structure
- Standard headings: Summary, Experience, Education, Skills, Certifications, Languages.
- Each job has a title, an employer, a location and dates on their own lines, in a consistent format (for example “Mar 2022 – Present”).
- Reverse chronological order, most recent first.
Content
- Keywords from the job post, written the way the employer writes them. If they say “Salesforce”, don’t only write “CRM”. Our guide on tailoring your resume to a job description shows how to find them.
- Both forms of acronyms the first time: “Search Engine Optimization (SEO)”.
- Bullets with results, not duties. “Cut invoice errors by 30%” beats “Responsible for invoices”. See 40 resume bullet point examples.
- Real skills only. Recruiters read the shortlist. Keyword stuffing, or white text hidden on the page, gets you rejected by a person.
How to test your resume before you apply
You can do a rough test yourself:
- Copy and paste test. Open your PDF, select all, and paste into a plain text editor. If the text comes out jumbled, missing or in the wrong order, a parser will struggle too.
- Read the result like a robot. Can you find your name, email and phone in the first lines? Does each job title sit next to its employer and dates?
- Compare against the job post. Highlight the hard skills the post asks for and check each one appears in your resume, spelled the same way.
Or let software do it. BrightResume’s free checker reads your resume the way an ATS does, runs 30 checks (readability, structure, keywords, dates, red flags), and shows exactly which line each problem is on. Paste a job link and it lists the keywords you’re missing.
Do design-heavy resumes ever make sense?
Yes, in two cases:
- You hand it to a person directly, for example at a career fair, by email to a hiring manager you know, or at an interview.
- Creative roles where the resume is part of the portfolio, and the employer asks for a PDF by email rather than through an ATS.
Even then, keep a plain one-column version for online forms. Our templates mark which designs are ATS-safe and which are better for handing in.
Quick answers
Does an ATS reject resumes automatically? Usually not on its own. Most rejections come from knockout questions (for example “Do you need sponsorship?”) or from a recruiter filtering and sorting results. A resume that parses well and matches the keywords simply shows up higher.
PDF or Word? Both work in current systems. A text-based PDF keeps your layout intact. If a job post or portal says .docx, send .docx.
Should I write my resume for the ATS or for the recruiter? For both, and they want the same things: clear structure, standard headings, and specific results that match the job.