What is an ATS?
An Applicant Tracking System (ATS) is software that employers use to collect, organize, and filter job applications. These systems were designed to help companies manage the overwhelming number of resumes they receive—often hundreds or thousands for a single position.
Here's the reality: over 98% of Fortune 500 companies and approximately 75% of all employers use some form of ATS. This means that before a human ever sees your resume, it's likely being scanned and scored by a computer algorithm.
Understanding how these systems work is crucial to your job search success. A perfectly qualified candidate can be filtered out simply because their resume wasn't formatted correctly for ATS parsing.
How ATS Systems Work
When you submit your resume through an online job application, the ATS:
The most popular ATS platforms include Workday, Taleo, Greenhouse, Lever, and iCIMS. Each has slightly different parsing capabilities, which is why following universal best practices is essential.
ATS Formatting Rules
Proper formatting is the foundation of an ATS-friendly resume. Here are the essential rules to follow:
Use a Simple, Clean Layout
Choose ATS-Compatible Fonts
The safest fonts for ATS compatibility include:
Avoid decorative fonts, as they may not render correctly or could be misread by parsing algorithms.
Use Standard File Formats
While PDFs are generally ATS-compatible today, some older systems still struggle with them. When in doubt, submit a .docx file.
Structure Your Content Properly
Use clear section headers that ATS systems recognize:
Use bullet points for listing accomplishments—avoid paragraphs of dense text. Start each bullet with a strong action verb.
Keyword Optimization
Keywords are the secret to ATS success. The system is looking for specific terms that match the job requirements.
How to Find the Right Keywords
Strategic Keyword Placement
Place keywords throughout your resume, but especially in:
Avoid Keyword Stuffing
While keywords are important, don't sacrifice readability. Your resume still needs to impress human reviewers once it passes ATS screening. Use keywords naturally within the context of your accomplishments.
Example: Before and After Keyword Optimization
Before (Generic):
"Managed social media accounts and created content"
After (Optimized):
"Managed B2B social media marketing across LinkedIn, Twitter, and Facebook, creating 50+ pieces of content monthly that increased engagement by 45% and generated 200+ qualified leads"
The optimized version includes relevant keywords (B2B, social media marketing, LinkedIn, content, engagement, qualified leads) while also providing specific, measurable accomplishments.
Common ATS Mistakes
Avoid these common errors that can cause ATS parsing failures:
1. Using Headers and Footers
Many ATS systems cannot read content placed in headers or footers. Keep your contact information in the main body of the document.
2. Fancy Formatting
Creative elements like icons, graphics, multiple columns, and unusual layouts confuse ATS parsers. Save the creative design for your portfolio or personal website.
3. Incorrect Section Headers
Using unconventional headers like "Where I've Worked" instead of "Work Experience" can cause the ATS to miscategorize or miss your information entirely.
4. Submitting Images
If your resume is saved as an image (or contains important information in image format), the ATS cannot extract the text at all.
5. Inconsistent Date Formats
Stick to one date format throughout your resume. "January 2024 - Present" or "01/2024 - Present" are both acceptable, but don't mix formats.
6. Using Uncommon Job Titles
If your company used creative titles (like "Customer Happiness Ninja"), add the standard equivalent in parentheses: "Customer Happiness Ninja (Customer Support Specialist)"
ATS Compatibility Checklist
Before submitting your resume, run through this checklist:
Free ATS Template
To help you get started, we've designed our resume templates with ATS compatibility in mind. Each template in our builder follows these formatting best practices while still looking professional and polished.
Our templates include:
All of our templates are tested against major ATS platforms to ensure your resume gets through to human reviewers.
Create your ATS-friendly resume now - it's free and takes just minutes.
Final Thoughts
An ATS-optimized resume doesn't mean a boring resume. It means a well-structured, keyword-rich document that clearly communicates your qualifications. By following the guidelines in this article, you can create a resume that successfully navigates automated screening while still impressing the hiring managers who ultimately make the decision.
Remember: the goal is to get your resume into human hands. Once there, your qualifications, accomplishments, and potential will speak for themselves.

