You spent hours crafting the perfect resume. You hit apply. And then — silence.
In many cases, the problem isn't your qualifications. It's that your resume never made it to a human. An Applicant Tracking System (ATS) scanned it, didn't find what it was looking for, and quietly rejected it.
This guide explains exactly how ATS works and what you can do to pass every filter.
What Is an ATS and Why Does It Matter?
An Applicant Tracking System is software that manages job applications. When you click "Apply," your resume is typically parsed by an ATS first — it extracts your information and scores your application against the job description.
According to research, over 98% of Fortune 500 companies use ATS. If you're applying online, there's a very good chance an ATS is screening you before any human sees your name.
The 9 ATS Optimization Rules
1. Use a Simple, Clean Format
ATS software can't read fancy designs. Avoid:
- Tables and multi-column layouts
- Text boxes and graphics
- Headers and footers with important content
- Icons and images
2. Use Standard Section Headings
Stick to: "Work Experience," "Education," "Skills," "Summary." Creative section names confuse ATS parsing.
3. Submit as a Simple PDF
Most modern ATS handle PDFs well. Avoid Canva, Google Slides, or InDesign-exported PDFs — these often have invisible text layers that ATS can't parse correctly.
4. Include Keywords from the Job Description
This is the most important optimization. ATS systems score your resume based on keyword matches. Go through the job posting and identify required skills, soft skills, job title, and industry-specific terms.
Include every relevant keyword you actually have experience with — using the exact same spelling and capitalization as the job description.
5. Include Keywords in Bullets, Not Just Skills
Many ATS systems weight keywords higher when they appear in experience bullets (with evidence of use) vs. a standalone skills list. Include key skills in both sections.
6. Use Full Versions and Abbreviations
Write "Search Engine Optimization (SEO)" — this covers both exact-match variations. Do this for any technical term or acronym.
7. Use Standard Fonts
Stick to: Arial, Calibri, Georgia, Helvetica, Times New Roman. Decorative fonts can cause parsing errors.
8. Include Dates in Standard Format
Use "January 2023 – March 2025" or "Jan 2023 – Mar 2025." Don't write just years — this can cause ATS to miscalculate your total experience.
9. Tailor for Each Application
A resume optimized for one job description won't be optimized for another. This is the core argument for using Flower Resume — it auto-tailors your resume to each job description without manual work.
ATS-Friendly Checklist
- ✓ Single-column layout, no tables or text boxes
- ✓ Standard section headings
- ✓ Standard fonts
- ✓ No headers/footers with important content
- ✓ Keywords from the job description included naturally
- ✓ Both spelled-out and abbreviated versions of key terms
- ✓ Consistent "Month Year" date format
- ✓ Tailored to the specific job description
Flower Resume generates ATS-optimized resumes automatically — every resume follows these rules by default. Try it free.
Read our guide on how to tailor your resume for any job description to master the content side once you've nailed the format.