What Is ATS and Why It Matters in 2025
An Applicant Tracking System (ATS) is software used by employers and recruitment agencies to receive, sort, and shortlist job applications. When you apply on a company's career portal, Naukri, LinkedIn, or any other job board, your application almost certainly passes through an ATS before any human sees it.
ATS software scores your resume based on how well it matches the job description — looking for specific keywords, qualifications, and experience. If your score is below the threshold, your application is automatically archived and never reaches a recruiter.
The 12 checks below address the most common reasons resumes fail ATS scoring. Run through this list before every application.
Formatting Checks (1–5)
1. Single-column layout only. Multi-column resumes are misread by most ATS systems. The parser reads left-to-right and top-to-bottom, so two-column layouts produce garbled text. Convert to a single-column format.
2. No tables. Tables are parsed inconsistently across different ATS platforms. Even if a table looks clean in Word, the extracted text is often jumbled. Remove all tables and replace with plain text.
3. No text boxes or shapes. Any text inside a text box or shape is typically invisible to ATS parsers. Information placed in these elements is simply not extracted.
4. Standard section headings. Use conventional headings: "Experience," "Education," "Skills," "Certifications." Creative headings like "My Journey" or "What I Bring" confuse parsers that look for standard labels.
5. Standard fonts only. Use fonts that are universally available: Calibri, Arial, Times New Roman, or Garamond. Decorative or custom fonts often render as character sequences in ATS extraction.
Content Checks (6–9)
6. Keywords from the job description. Copy the job posting into a text editor and highlight the repeated terms. These are your keywords. Make sure the most important ones appear in your resume — ideally in your summary, skills section, and relevant experience bullets.
7. Spell out abbreviations. If the job description says "Human Resource Information System," don't just write "HRIS." Write "Human Resource Information System (HRIS)" at least once so both forms are captured.
8. Quantify your achievements. Many ATS systems score resumes on specificity. "Managed payroll for 250 employees" scores higher than "managed payroll." Add numbers wherever possible.
9. Complete dates for all experience. Missing dates in your experience section raise flags in both ATS systems and human reviewers. Use the format: "March 2021 – Present" or "Mar 2021 – Dec 2023" consistently throughout.
Don't stuff keywords unnaturally. Modern ATS systems (and the humans who review shortlisted resumes) penalise keyword stuffing. Use keywords where they fit naturally — typically once in your summary, once in your skills section, and in relevant experience bullets.
Technical Checks (10–12)
10. File format check. For most online job applications and portals, submit as .docx (Word document). For email applications to recruiters, .pdf is preferred as it preserves formatting. When in doubt, check the application instructions — they often specify.
11. File naming convention. Name your file: FirstName-LastName-Resume.pdf or FirstName-LastName-JobTitle-Resume.pdf. "Resume-Final-v3-2024.pdf" looks disorganised and is harder to track in an ATS.
12. No headers or footers. Contact information placed in Word's header or footer section is typically not parsed by ATS software. Your name, phone number, email, and LinkedIn URL should all be in the main body of the document.
The Final ATS Test: The Copy-Paste Method
Before submitting, run this 30-second test: open your resume in Word or PDF, select all text (Ctrl+A), and paste it into a plain text editor (Notepad on Windows, TextEdit in plain text mode on Mac). Read through what appears.
If the text is jumbled, sections are out of order, or content from columns has merged incorrectly — an ATS parser will have the same problem. Reformat until the plain text version reads cleanly and sequentially.
ATS optimisation isn't about gaming the system — it's about making sure a well-qualified candidate doesn't get filtered out by avoidable formatting errors. Run this checklist once, fix the issues, and you'll clear the ATS filter for every application going forward. The TrueCV team can review and rewrite your resume with all 12 points already addressed.