ATS Resume Scanner & Checker: How to Optimize Your Resume for Applicant Tracking Systems

Learn what an ATS resume is, how ATS resume checkers work, and tips to create an ATS-friendly resume.

AK
Alex Khamis, CPRWCo-founder of Resumatic, founder of Final Draft Resumes
March 8, 2026 · 7 min read

What’s an ATS Resume?

An ATS resume is a resume specifically designed to be compatible with Applicant Tracking Systems (ATS), the software used by employers to screen job applications.

ATS software scans resumes for keywords, formatting, and relevance to the job description before a human recruiter ever sees them.

How does an ATS work?

If your resume isn’t optimized for ATS, it risks being rejected before it reaches a hiring manager.

Traditional resumes often fail in ATS systems because they rely on creative designs, graphics, or unconventional formatting.

For example, a resume with tables, columns, or infographics might look impressive to a human but confuse an ATS scanner.

An ATS-friendly resume uses simple, clean formatting and includes keywords from the job description.

For instance, if you’re applying for a marketing role, terms like “SEO,” “campaign management,” and “ROI analysis” should appear naturally in your resume.

ATS systems also prioritize standard section headings like “Work Experience,” “Education,” and “Skills.”

Using non-standard headings like “Where I’ve Worked” or “My Background” can cause the system to miss critical information.

To ensure your resume passes ATS screening, avoid using headers, footers, or unusual fonts.

Stick to common fonts like Arial or Times New Roman, and save your file in a compatible format like .docx or .pdf.

ATS resume
Example of an ATS friendly resume (left) and a non-ATS friendly resume (right)

By optimizing your resume for ATS, you increase your chances of making it through the initial screening and landing an interview.

What’s an ATS Resume Checker?

An ATS resume checker is a tool designed to evaluate how well your resume aligns with the requirements of Applicant Tracking Systems (ATS).

ATS resume checker using Resumatic
Here’s a quick snapshot of Resumatic’s resume grading system. Your resume is scored in 5 key areas: Content, Format, Optimization, Best Practices, and Application Ready.

Here’s a quick snapshot of Resumatic’s resume grading system. Your resume is scored in 5 key areas: Content, Format, Optimization, Best Practices, and Application Ready.

These tools simulate the way ATS software scans and processes resumes, identifying potential issues that could cause your application to be rejected.

For example, an ATS resume checker might flag missing keywords, improper formatting, or unclear section headings.

Using an ATS resume checker can help you pinpoint areas for improvement in your resume.

For instance, if the tool detects a lack of relevant keywords, you can update your resume to include terms like “project management,” “data analysis,” or “team leadership” based on the job description.

ATS resume checkers also analyze your resume’s structure and formatting.

They can alert you to problems like inconsistent font sizes, excessive use of graphics, or improper use of headers and footers, which can confuse ATS software.

Many ATS resume checkers provide a compatibility score, showing how well your resume matches the job description.

For example, a score of 80% or higher might indicate a good alignment, while a lower score suggests you need to make adjustments.

Popular ATS resume checker tools include Resumatic, Jobscan, Resume Worded, and Zety.

These tools often provide detailed feedback, such as keyword suggestions, formatting tips, and examples of ATS-friendly resumes.

By using an ATS resume checker, you can ensure your resume is optimized for both ATS software and human recruiters.

This dual optimization increases your chances of passing the initial screening and advancing to the interview stage.

Top Tools for ATS Resume Checking

Using the right tools to check your resume’s compatibility with Applicant Tracking Systems (ATS) can make a significant difference in your job search.

ATS resume scanner comparison
  • Resumatic is a resume builder with a built in ATS resume scanner. Unlike some of the other tools on this list, Resumatic is a jack-of-all-trades, offering ATS templates, human-based reviews, scoring, and more.
  • Jobscan is one of the most popular ATS resume checkers. It compares your resume against a job description, providing a compatibility score and detailed feedback on missing keywords, formatting issues, and more.
  • Resume Worded offers a similar service, analyzing your resume for ATS compatibility and providing actionable insights.
  • Zety is another powerful tool that combines ATS optimization with resume-building features. It guides you through creating a professional resume while ensuring it meets ATS standards.
  • VMock uses AI to provide instant feedback on your resume, including ATS optimization tips.

These tools not only help you optimize your resume for ATS but also improve its overall quality.

Common Mistakes to Avoid When Creating an ATS Resume

Even with the best intentions, many job seekers make mistakes that cause their resumes to fail in Applicant Tracking Systems (ATS).

One of the most common errors is keyword stuffing.

  • While including relevant keywords is essential, overloading your resume with them can make it look unnatural and spammy.
  • For example, repeatedly forcing terms like “project management” or “data analysis” without context can hurt your chances.

Another mistake is using complex formatting.

  • ATS software struggles with resumes that include graphics, tables, or unconventional layouts.
  • For instance, a resume with a two-column design or an infographic might look impressive but could be unreadable to an ATS.

Ignoring job-specific keywords is another critical error.

  • If your resume doesn’t include terms from the job description, it’s unlikely to pass the initial screening.
  • For example, if the job posting emphasizes “CRM software” and “client retention,” make sure these phrases appear in your resume.

Using non-standard headings can also cause problems.

  • ATS software looks for familiar section titles like “Work Experience” or “Education.” Creative headings like “My Professional Journey” or “Where I’ve Been” might confuse the system and result in missed information.

Failing to quantify achievements is another pitfall.

  • ATS systems and recruiters alike value measurable results.
  • Instead of saying “improved sales,” write “increased sales by 25% in six months.”

Lastly, saving your resume in the wrong format can render it unreadable.

  • While PDFs are often preferred for their consistency, some ATS systems struggle with them.
  • Always check the job posting for preferred file types, and when in doubt, use .docx.

By avoiding these mistakes, you can create a resume that passes ATS screenings and impresses recruiters.

To Wrap Up

Today’s job market is extremely competitive, so optimizing your resume for ATS is no longer optional—it’s essential.

An ATS resume is designed to meet the technical requirements of automated screening software, ensuring your application reaches human recruiters.

Tools like ATS resume checkers and scanners help you identify and fix issues, from missing keywords to improper formatting.

By following best practices—such as using simple layouts, incorporating job-specific keywords, and quantifying your achievements—you can create a resume that stands out to both ATS software and hiring managers.

Don’t leave your job search to chance. Use an ATS resume checker to test your resume’s compatibility and make adjustments as needed.

With a well-optimized resume, you’ll increase your chances of landing interviews and securing your dream job.

Take the first step today: Upload your resume to an Resumatic’s ATS resume scanner and see how it measures up. Your next career opportunity could be just one optimized resume away.

Frequently asked questions

  • An ATS resume is a resume specifically designed to be compatible with Applicant Tracking Systems (ATS). It uses simple formatting, standard headings, and relevant keywords to ensure it passes automated screenings and reaches human recruiters.

  • An ATS resume checker is a tool that evaluates how well your resume aligns with ATS requirements. It analyzes keywords, formatting, and structure, providing feedback to help you optimize your resume for automated screenings.

  • An ATS resume scanner simulates how ATS software reads your resume. It identifies issues like missing keywords, improper formatting, or unclear headings, helping you make adjustments to improve compatibility.

  • ATS optimization ensures your resume passes the initial automated screening, increasing your chances of being seen by a human recruiter. Without it, even the most qualified candidates risk being overlooked.

  • No. Each job posting has unique keywords and requirements. Tailor your resume for each application by incorporating specific terms from the job description and using an ATS resume checker to ensure compatibility.

  • Most ATS systems prefer .docx or .pdf files. However, always check the job posting for specific instructions, as some employers may have preferred formats.

  • Use an ATS resume checker like Jobscan, Resume Worded, or Zety to evaluate your resume. These tools provide detailed feedback and compatibility scores, helping you make necessary improvements.

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Charles Bloomberg
Seoul, South Korea·charlesbloomberg@gmail.com·(621)799-5548·in/cbloomberg

SUMMARY

Passion for building inspiring consumer software companies through industry-leading tech, design, and execution. An experienced early-stage global executive with an economics degree from the University of Wisconsin Madison.

EXPERIENCE

CEO & Founder
ReziAugust 2015 - Present, Seoul, South Korea
· Launched Rezi, the leading AI-powered resume SaaS software, garnering trust from over 4,533,800 users globally.
· Initiated Rezi at the age of 22, and within a year, successfully globalized into South Korea, raising over $550,000 in capital fundraising
efforts and gaining recognition as South Korea's leading English resume company.
· Adapted to market by developing business models, resulting in the creation of advanced AI features to outcompete alternatives. Led
prototyping in Figma and a shared design system with the development team, and formulated zero-investment growth strategies that
led to an addition of 1,500,000 users in six months.
· Maintained a robust financial structure, supporting a company valuation of $45,000,000, with a dedicated team of 9 full-time
employees and an expanding user base.
· Devised and pursued strategic objectives that guide the company's decisions and propel it towards its goals. Assembled an advisory
board that has been instrumental in providing direction to corporate structure and strategic planning.
Marketing Analyst
KaplanMay 2016 - May 2017, La Crosse, WI

· Relied and implement Tableau dashboards to track 6 marketing KPIs. Used data to create reports circulated amongst leadership. Collaborated with marketing specialists to improve marketing strategies to maximize ROI such as introducing Facebook retargeting.

· Used SurveyMonkey to collect over 100 customer feedbacks used to conduct analysis, identify market trends, and calculate NPS. Used customer feedback data and optimization software to present and suggest website improvements to management.

· Managed mobile 2 PPC strategy efforts, using Google AdWords Editor and Marin, by teaching marketing specialists best practices to prepare for the behavioral shift towards increased reliance on mobile.

Web Developer
KaplanJanuary 2015 - January 2016, La Crosse, WI

· Executed website redesign of kaplancleantech.com using Expression Engine as a CMS while working with marketing and sales teams. Optimized 3 landing page variants using HTML, A/B testing software and customer feedback to increase leads for sales teams.

· Lead the developing SEO strategies monitoring campaigns using MOZ Analytics for a 500k budget. Maintained performance through site analysis, and new keyword research. Prepared analytics and ranking reports presented to management.

· Executed Google Analytics tracking campaigns to maximize the effectiveness of 5 email re-marketing initiatives deployed using Salesforce software. Used Salesforce Object Query Language, C, and Python to search for data for specific information.

· Contributed to Deck Writing, Channel Allocation, Budgeting, and more.

PROJECT

Early-Stage Startup ArchitectStartup Consultant · May 2016 - Present

· Mentored 3 global founders to bring well-executed MVPs to market through no-code and "ship-first" methodologies.

EDUCATION

Bachelor of Science in Economics with a Mathematics EmphasisUniversity of Wisconsin - Madison · 2014

SKILLS

Leadership: Speaking, Fundraising, Product Development, Communication, Partnerships, International Marketing

Fields of Interest: Early-Stage Fundraising, Global Entrepreneurship, Web Design, Growth

Front End: HTML, CSS, Bootstrap, Webflow

Design: Photoshop, Illustrator, Sketch