What is an ATS?
An applicant tracking system (ATS) is software employers use to collect, sort and search job applications. Recruiters use it to filter candidates and search for skills, so your resume needs a readable structure and the job's own wording.
How an ATS reads your resume
When you apply, the system extracts the text from your file and sorts it into fields: contact details, job titles, employers, dates, education and skills. That parsed version is what recruiters search when they look for candidates with, say, "Salesforce" and "account management".
Two things can go wrong. First, the parser can misread a layout it doesn't understand. Columns get merged, dates end up next to the wrong employer, or contact details in a header are skipped. Second, your resume can be perfectly readable but describe your experience in different words from the ones the recruiter searches for.
Good ATS formatting fixes the first problem. Tailoring your wording to the job fixes the second.
ATS-safe formatting
The safest resume is plain. Design choices that look good to a person can confuse a parser:
| Safe | Risky |
|---|---|
| One column, top to bottom | Two or three columns side by side |
| Standard headings: Experience, Education, Skills | Creative headings such as "My Journey" or "What I Bring" |
| Contact details in the main body | Contact details only in the document header or footer |
| Plain bullet points | Tables, text boxes and skill-level bars |
| Common fonts (Arial, Calibri, Garamond, Times New Roman) | Decorative fonts or text inside images |
| Dates in one consistent format (e.g. Jan 2024 – Mar 2026) | Mixed or missing dates |
| .docx, or a text-based PDF when the posting accepts PDFs | A scanned PDF or an image of your resume |
Keywords and context
Recruiters search the ATS using the words in their job description. If the posting says "customer relationship management" and your resume only says "client success", a keyword search may miss you, even though it means the same thing.
To find the right keywords:
- Highlight the hard skills, tools, certifications and job titles in the posting.
- Mark the ones that appear more than once, or in the "requirements" section. Those matter most.
- For each one that's true for you, use the posting's exact wording at least once.
- Put it in context: a bullet that shows what you did with the skill, not only a line in your skills list.
Keywords get your resume found; context gets it read. Our ATS Keyword vs Context guide goes deeper on the difference.
Section order by career stage
Use standard headings, in the order that puts your strongest evidence first:
- Student or recent graduateContact → Summary → Education → Projects or internships → Skills → Experience
- Experienced professionalContact → Summary → Experience → Skills → Education → Certifications
- Career changerContact → Summary (name the target role) → Relevant skills → Experience → Education and training
Before and after: experience bullets
Strong bullets name the skill, the action and the result. Replace the bracketed placeholders with your own real numbers; never invent them.
Before
Responsible for managing social media accounts.
After
Managed LinkedIn and Instagram for a B2B software brand; grew qualified demo requests from social by [X%] in [period] by switching to customer-story posts.
Before
Worked on data analysis for the sales team.
After
Built weekly sales pipeline reports in SQL and Tableau for a [N]-person team, cutting manual reporting time by [X hours] a week.
Before
Helped customers with their problems.
After
Resolved [N] customer support tickets a week in Zendesk with a [score] satisfaction rating; wrote [N] help-center articles that answered the most common questions.
ATS myths
Myth: "Most resumes are automatically rejected by the ATS."
You'll often see a specific percentage quoted, but we haven't found a reliable source for it. In most companies, recruiters search and filter applications themselves; how much is automated depends on the employer and how they configure their system.
Myth: "You need a special ATS template."
Any clean, single-column resume with standard headings works. The content (matching skills, clear results) matters more than the template.
Myth: "Hiding keywords in white text beats the system."
Parsed text shows up in plain view to the recruiter, so hidden keywords are visible and look like an attempt to game the process.
Myth: "PDFs can't be read by an ATS."
Text-based PDFs are read by most modern systems. Scanned or image PDFs are the problem. If the posting asks for .docx, send .docx.
Checklist before you apply
- Single-column layout with standard section headings
- Name, email, phone and LinkedIn URL in the body, not the header
- The exact job title from the posting appears in your summary or most relevant role (if it's true for you)
- The posting's must-have skills appear in your Skills section and in at least one experience bullet
- Every recent role has at least one measurable result
- Dates are consistent and there are no unexplained gaps longer than a few months
- Saved as .docx or a text-based PDF, with a clear file name (FirstName-LastName-Resume)
- Checked against the job description with a free ATS resume checker
Want a printable version? Use the resume checklist.
Frequently asked questions
What does ATS stand for?
Applicant tracking system: software employers use to collect job applications, store candidate information, and let recruiters search, filter and move candidates through the hiring process.
How do I know if my resume is ATS-friendly?
Paste it into a plain-text editor. If the sections, job titles and dates still read in the right order, a parser will usually read it too. Then check it against the job description to see which required skills and keywords are missing.
How many keywords should my resume have?
There's no magic number. Cover the must-have skills and tools from the posting that are true for you, and use them in context: in bullets that show what you did with them.
Should I write a different resume for every job?
Keep one master resume, then tailor the summary, skills and top bullets for each application. Small changes to match the posting's wording usually matter more than a full rewrite.
Is a two-page resume a problem for an ATS?
No. Length doesn't affect parsing. One page suits early-career candidates; two pages are normal for experienced professionals.
Check your resume against the job
Paste your resume and a job description to see your ATS match score and the keywords you're missing.
Applying for one specific job? Match your resume to the job description.