How to Prepare for ATS Systems That Filter Applications

If you’ve ever submitted a resume only to hear crickets, you’re not alone. Applicant Tracking Systems (ATS) are the gatekeepers that many companies use to screen thousands of applications before a human ever sees them. In this guide we’ll break down exactly how to prepare for ATS systems that filter applications, offering a step‑by‑step checklist, real‑world examples, and free Resumly tools that can give you a measurable edge.

Understanding ATS Systems

What is an ATS? An Applicant Tracking System is software that parses resumes, extracts relevant data, and matches it against job posting criteria. According to a 2023 LinkedIn report, 75% of large companies use ATS technology to filter candidates before they reach a recruiter.

Key functions of an ATS include:

• Keyword matching – scanning for exact words or phrases from the job description.
• Formatting parsing – reading plain‑text, tables, columns, and graphics.
• Scoring – assigning a relevance score that determines ranking.

Because ATS algorithms vary, the safest approach is to design a resume that speaks the same language as the system while still looking great to a human reader.

Common Reasons Applications Get Filtered

Step‑By‑Step Checklist to Optimize Your Resume for ATS

1. Choose the Right File Format – Export as a .docx or an ATS‑optimized PDF from Resumly’s AI Resume Builder.
2. Use Standard Section Headings – Summary, Work Experience, Education, Skills.
3. Mirror the Job Description – Identify 5‑7 core keywords and incorporate them naturally.
4. Keep Formatting Simple – Use a single column, standard fonts (Arial, Calibri, Times New Roman), and avoid tables.
5. Quantify Achievements – Numbers are parsed easily and boost relevance.
6. Include a Skills Section – List both hard and soft skills; match them to the posting.
7. Add a Custom URL – Include a link to your Resumly profile or portfolio.
8. Run the ATS Resume Checker – Fix any flagged issues before you apply.
9. Save a Master Copy – Keep a master version you can quickly tailor for each job.
10. Test with a Free ATS Simulation – Use Resumly’s Resume Roast for AI‑driven feedback.

Do’s and Don’ts for ATS‑Friendly Formatting

Do

• Use bullet points that start with action verbs.
• Keep margins between 0.5‑1 inch.
• Include keywords in both the Summary and Skills sections.
• Use standard fonts (size 10‑12 pt).

Don’t

• Insert images, logos, or headshots inside the resume body.
• Use headers/footers for contact info – ATS may miss them.
• Overload with industry buzzwords that aren’t in the posting.
• Write long paragraphs; ATS prefers concise bullet statements.

Using Resumly’s Free ATS Resume Checker

Resumly offers a no‑cost ATS Resume Checker that scans your document against over 1,200 job descriptions. Here’s how to use it:

1. Visit https://www.resumly.ai/ats-resume-checker.
2. Upload your latest resume (docx or PDF).
3. Review the keyword match score and the formatting alerts.
4. Apply the suggested edits directly in Resumly’s AI Resume Builder (AI Resume Builder).
5. Re‑run the checker until you achieve a 90%+ match.

A recent user reported a 45% increase in interview callbacks after following the checker’s recommendations.

Crafting ATS‑Optimized Cover Letters

A well‑written cover letter can reinforce the keywords you used in your resume. Resumly’s AI Cover Letter tool helps you:

• Mirror the job description in the opening paragraph.
• Highlight quantifiable achievements that align with the role.
• Keep the length to 3‑4 short paragraphs – ATS often scans the first 200 words.

Example snippet:

“As a data‑driven marketing analyst with 4 years of experience optimizing PPC campaigns, I increased ROI by 32% for XYZ Corp, directly aligning with your need for a performance‑focused analyst.”

Notice the use of the exact phrase “performance‑focused analyst”, which matches the posting.

Leveraging Keywords and Job Match Tools

Finding the right keywords can feel like searching for a needle in a haystack. Resumly’s Job Match and Job Search Keywords tools automate this process:

1. Paste the job description into the Job Match tool.
2. Receive a keyword heat map showing high‑impact terms.
3. Export the list and sprinkle the terms throughout your resume and cover letter.
4. Use the Buzzword Detector (Buzzword Detector) to avoid overused clichés that may dilute relevance.

According to Glassdoor, resumes that contain exact keyword matches are 2.5× more likely to be viewed by recruiters.

Real‑World Example: From Rejection to Interview

Scenario: Maria, a project coordinator, applied to a senior project manager role at a tech startup. Her original resume was rejected by the ATS because it lacked the phrase “Agile methodology” and used a two‑column layout.

Steps Maria Took:

1. Ran her resume through the ATS Resume Checker – flagged missing keywords and column usage.
2. Switched to a single‑column format using Resumly’s AI Resume Builder.
3. Added “Agile methodology,” “Scrum,” and “cross‑functional team leadership” to the Skills and Experience sections.
4. Re‑uploaded to the checker – score rose from 58% to 93%.
5. Submitted the revised resume and received an interview invitation within 48 hours.

Takeaway: Small, targeted changes aligned with ATS expectations can dramatically improve outcomes.

Frequently Asked Questions

1. Do ATS systems read PDFs? Yes, but only if the PDF is text‑based and not image‑based. Use Resumly’s export option for an ATS‑friendly PDF.

2. How many keywords should I include? Aim for 5‑7 core keywords that appear in the job description. Over‑stuffing can trigger a “keyword stuffing” penalty.

3. Can I use a creative resume design? Creative designs are great for portfolios, but for most corporate roles stick to a clean, simple layout. You can always attach a separate portfolio link.

4. What if the job posting uses synonyms? Include both the exact term and common synonyms. For example, use “project management” and “program coordination.”

5. Is a LinkedIn profile important for ATS? Many ATS pull data from LinkedIn URLs. Ensure your profile mirrors the keywords on your resume.

6. How often should I update my resume? Whenever you acquire a new skill, certification, or achievement. Frequent updates keep your keyword set fresh.

7. Do ATS systems rank candidates? Yes, they assign a relevance score based on keyword density, formatting compliance, and experience relevance.

Final Thoughts: How to Prepare for ATS Systems That Filter Applications

Preparing for ATS systems is less about “gaming” the software and more about clear communication between you and the hiring algorithm. By following the checklist, using Resumly’s free tools, and continuously tailoring your language to each posting, you’ll dramatically increase the odds that your resume passes the filter and lands in a recruiter’s inbox.

Ready to put these strategies into action? Start with Resumly’s AI Resume Builder, run the ATS Resume Checker, and watch your interview rate climb.

For more career‑building resources, explore the Resumly Career Guide and Blog.