What Is an ATS and Why Does It Matter?
An Applicant Tracking System (ATS) is software that companies use to manage their hiring process. It collects, organizes, and filters job applications. Over 90% of Fortune 500 companies and a growing number of mid-sized businesses use some form of ATS.
When you submit a resume online, it almost certainly passes through an ATS before reaching a recruiter. The system parses your document, extracts relevant information, and ranks you against other candidates based on how well your resume matches the job description.
Formatting Rules for ATS Compatibility
Use standard section headers: "Experience," "Education," "Skills," and "Summary." Creative headers like "Where I've Made Impact" confuse ATS parsers.
Avoid tables, columns, text boxes, headers/footers, and images. These elements often break ATS parsing, causing your information to be lost or scrambled.
Save your file as PDF or DOCX. While PDFs are generally safe, some older ATS systems prefer DOCX. When in doubt, check the application instructions.
Use a clean, professional font (Arial, Calibri, Times New Roman) at 10-12pt. Unusual fonts can cause character recognition issues.
Keyword Optimization Strategy
Read the job description carefully and identify the key skills, qualifications, and tools mentioned. Incorporate these naturally throughout your resume.
Include both full terms and abbreviations: "Search Engine Optimization (SEO)" covers both bases.
Place important keywords in your summary section and experience descriptions — not just in a skills list. Context matters.
Don't keyword stuff. Modern ATS systems can detect unnatural keyword repetition, and even if you pass the filter, a human reviewer will notice.
Testing Your ATS Compatibility
Before submitting, test your resume with an ATS simulation tool like LintCV. Our AI analyzes your resume the way an ATS would, giving you an ATS compatibility score and specific recommendations for improvement.
Pay attention to your ATS score breakdown: keyword density, section structure, formatting issues, and overall readability. Even small improvements can make the difference between getting screened in or out.