ATS Resume Mistakes to Avoid

Published May 25, 2026 · Get Resumatch

Why ATS Mistakes Can Cost You the Job

Over 98% of Fortune 500 companies use Applicant Tracking Systems (ATS) to filter resumes before a human recruiter ever sees them. If your resume contains common ATS mistakes, it could be automatically rejected even if you are perfectly qualified for the role. Understanding how these systems work and what errors to avoid is essential for any modern job seeker.

Top ATS Resume Mistakes to Avoid

1. Using Incompatible File Formats

One of the most common mistakes is submitting your resume in an unsupported file format. While PDF files are generally safe, some older ATS platforms struggle to parse them correctly. Always check the job posting for format requirements. When in doubt, a clean .docx file is the safest option for ATS compatibility.

2. Using Tables, Columns, and Text Boxes

ATS software reads resumes linearly from left to right and top to bottom. When you use multi-column layouts, tables, or text boxes, the system can scramble your information, mixing job titles with company names or dates with descriptions. Stick to a single-column format for maximum readability by ATS parsers.

3. Including Headers and Footers with Important Information

Many ATS systems cannot read content placed in the header or footer sections of a Word document. If you place your contact information, name, or phone number in a header, the system may never capture it. Always place your critical contact details in the main body of the document.

4. Using Graphics, Images, and Icons

Infographic resumes look visually impressive, but ATS software cannot read images. Skills displayed as bar graphs, profile photos, or icons representing contact information will simply be invisible to the system. Replace all visual elements with plain text equivalents.

5. Missing Relevant Keywords

ATS systems rank resumes based on how many relevant keywords they contain from the job description. Failing to mirror the language used in the job posting is one of the most damaging mistakes you can make. Carefully read each job description and incorporate exact phrases and keywords naturally throughout your resume.

6. Using Uncommon Section Headings

Creative section titles like "Where I Have Been" instead of "Work Experience" or "My Toolbox" instead of "Skills" can confuse ATS parsers. These systems look for standard headings to categorize your information. Use conventional labels such as Work Experience, Education, Skills, and Certifications.

7. Using Fancy Fonts and Special Characters

Decorative fonts, special Unicode characters, and symbols used as bullet points may not render correctly in ATS software. Stick to standard fonts like Arial, Calibri, or Times New Roman and use simple round or square bullet points instead of decorative symbols.

8. Keyword Stuffing

While keywords matter, stuffing your resume with excessive keywords in an attempt to game the system can backfire. Modern ATS platforms are sophisticated enough to detect unnatural keyword density. Human reviewers who eventually read your resume will also notice if it reads awkwardly. Use keywords naturally and in context.

9. Submitting One Generic Resume for Every Job

Sending the same resume to every employer without tailoring it to each specific job description is a critical mistake. Each job posting uses different language and prioritizes different skills. Customize your resume for each application to align with the specific keywords and requirements of that role.

10. Using Abbreviations Without Spelling Them Out

ATS systems may not recognize abbreviations unless they are programmed to do so. For example, if a job posting says "Search Engine Optimization" but your resume only says "SEO," the system might not make the connection. Include both the full term and the abbreviation to cover all bases.

How to Test Your Resume for ATS Compatibility

Before submitting your resume, copy and paste the entire text into a plain text editor like Notepad. If the content appears garbled, out of order, or missing, your formatting is likely to cause problems with ATS software. Tools like Jobscan, Resume Worded, and other ATS checkers can also help you identify issues before submission.

Final Tips for ATS Success

Frequently Asked Questions

What is an ATS and how does it work?

An ATS, or Applicant Tracking System, is software used by employers to collect, sort, and rank job applications. It scans resumes for relevant keywords and formatting compatibility, then scores or filters candidates before a human recruiter reviews them. Resumes that don't meet the system's criteria are often eliminated automatically.

What file format is best for ATS resumes?

A .docx format is generally the safest choice for ATS compatibility. While PDFs are widely accepted by modern systems, older ATS platforms may struggle to parse them. Always follow any file format instructions provided in the job posting. If no guidance is given, .docx is the most universally compatible option.

Can I use a two-column resume layout for ATS applications?

It is best to avoid two-column layouts when applying through an ATS. Most applicant tracking systems read content linearly and can scramble information from multi-column formats, potentially mismatching your job titles, dates, and descriptions. A clean single-column layout ensures your information is parsed correctly.

How do I find the right keywords for my resume?

The best source of keywords is the job description itself. Read through the posting carefully and note the specific skills, tools, qualifications, and phrases the employer uses. Incorporate those exact terms naturally into your resume, particularly in your skills section and work experience bullet points.

Does adding a photo to my resume hurt my ATS chances?

Yes, adding a photo to your resume can negatively affect ATS processing. Applicant tracking systems cannot read images and the space taken up by a photo adds no value to the parsing process. In addition, many employers prefer resumes without photos to reduce unconscious bias during the initial screening stage.

How often should I update my resume for ATS optimization?

You should tailor your resume for every single job application to match the specific keywords and requirements of each posting. Beyond individual applications, do a general review and update of your master resume every three to six months to reflect new skills, accomplishments, and industry terminology changes.

Check your ATS score for free

Paste your resume and job description into our free ATS checker — get your score and every missing keyword instantly. No account required.

Check My ATS Score Free → Full Resumatch Tool