How It Works
How ATS Scanners Parse Your Resume
When you submit a job application online, your resume does not go directly to a recruiter — it first passes through an Applicant Tracking System (ATS). An ATS scanner is the engine inside these systems that reads your resume file, extracts text, and attempts to identify your name, contact details, employment history, education, and skills. This process is called resume parsing, and it happens automatically within milliseconds of your submission.
The ATS converts your resume file (PDF, Word, or plain text) into raw character strings, then applies a series of natural language processing (NLP) rules to categorize sections. Standard section headers like Experience, Education, and Skills are recognized easily. However, non-standard headers — like "Where I've Been" or "What I Know" — can confuse the parser and cause entire sections to be dropped from the system.
Layout choices matter enormously during ATS parsing. Multi-column designs, text embedded in graphics, and resume data placed inside table cells are three of the most common formatting choices that cause extraction failures. When an ATS scanner cannot read a column, it either merges columns incorrectly or skips the data entirely — making you appear under-qualified even if your experience is highly relevant to the role.
Mira Resume's ATS scanner tests your resume against the exact parsing logic used by Workday, Greenhouse, Lever, iCIMS, and Oracle Taleo — the five most widely deployed enterprise ATS platforms. Our scanner detects layout issues, encoding problems, non-standard fonts, and section misclassifications before your resume reaches a real recruiter's queue.
5 Resume Elements Most ATS Scanners Fail to Read
- 1Multi-Column LayoutsTwo-column and three-column resume templates look visually impressive but are among the highest-risk formatting choices for ATS parsing. Systems like Workday and iCIMS read documents left-to-right line by line, which causes them to merge adjacent columns into a single garbled line of text. A merged line like "Software Engineer Python, JavaScript 2019–2023" becomes unreadable and unparseable by the ATS.
- 2Contact Information in Headers or FootersMany resume templates place your name, email, and phone number in the document header or footer section. While this looks clean visually, most ATS platforms do not parse text from Word document headers/footers. This means your contact details may be completely invisible to the recruiter's database — making it impossible to reach you even if your application scores well.
- 3Text Embedded in Images or GraphicsSome resume designs use images to display skill bars, logos, or decorative elements with text. ATS parsers cannot read text that is embedded inside an image file — they require plain, selectable text. If your skills section is rendered as a graphic, those skills will not appear in the recruiter's keyword search results.
- 4Non-Standard Section HeadingsATS systems are trained to recognize standard section labels: Summary, Experience, Work History, Education, Skills, Certifications. Creative alternatives like "My Story", "Career Highlights", or "Core Competencies" may not be recognized, causing the section to be uncategorized or ignored by the ATS sorting algorithm.
- 5Non-Selectable PDF Text (Image-Based PDFs)If your resume was saved as a scanned image PDF rather than a text-based vector PDF, the ATS scanner cannot extract any text from it. The entire document appears blank in the system. Always export your resume as a text-based PDF by using "Save as PDF" or "Export as PDF" from Word or Google Docs — never scan a printed resume page.
ATS Scanner Checklist: Before You Submit Your Application
- Use a single-column layout: Ensure your resume uses a clean, single-column format with no text boxes, tables spanning multiple columns, or side panels.
- Place all contact info in the document body: Name, email, phone, LinkedIn URL, and location should appear as normal body text — not in a Word header, footer, or text box.
- Use standard section headings: Stick to recognized labels: Summary, Work Experience (or Experience), Education, Skills, Certifications, Projects.
- Save as a text-based PDF: Export from Word, Google Docs, or Mira Resume's export feature — never scan a printed resume or use image-based PDF tools.
- Use standard fonts only: Calibri, Arial, Garamond, Helvetica, Times New Roman, and Georgia are safe. Avoid decorative or rare fonts that may not be rendered correctly during parsing.
- Avoid skill bars, charts, and graphics: Remove any visual progress bars, pie charts, or icon-based skill ratings. ATS systems cannot parse data from graphical elements.
- Check encoding of special characters: Use standard dash (–) and bullet (•) characters. Non-standard Unicode characters, smart quotes, and em dashes may cause encoding errors in some ATS parsers.
- Run Mira Resume's free ATS scanner: Upload your resume and receive an instant parse error report, section detection status, and formatting compatibility score across 5 major ATS platforms.
ATS Scanner — Frequently Asked Questions
What is an ATS scanner?
An ATS (Applicant Tracking System) scanner is a software tool that reads, extracts, and categorizes text from resume files submitted through job application portals. Employers use ATS platforms like Workday, Greenhouse, Lever, iCIMS, and Oracle Taleo to manage and filter thousands of job applications. An ATS scanner specifically refers to the parsing engine within these systems that converts your resume document into structured data fields such as name, contact, work history, and skills.
How does ATS text extraction work?
ATS text extraction works by opening your resume file (PDF, DOCX, or TXT), reading each line of selectable text sequentially from top to bottom, and then applying natural language processing (NLP) rules to identify and classify content. The system looks for signal words near section headers, date patterns to identify employment periods, institution names to classify education, and keyword density to calculate relevance scores against the job description.
What resume formats are safest for ATS parsing?
The safest formats for ATS parsing are: (1) Text-based PDF — the most universally supported format across all ATS platforms. (2) Microsoft Word DOCX — widely parsed and especially recommended for older ATS versions. (3) Plain text TXT — fully parseable but loses all formatting. Avoid image-based PDFs, scanned documents, heavily designed templates with graphics, and HTML or web-based resume formats.
Do ATS scanners read tables and multi-column layouts?
Most ATS scanners have poor or no support for multi-column layouts and HTML tables embedded in Word documents. When columns are detected, many parsers merge the columns left-to-right line by line, producing garbled output. For example, a two-column layout with 'Software Engineer' on the left and '2020–2023' on the right may be merged into a single unreadable string. Single-column, left-aligned formats are always the safest choice.
How is an ATS scanner different from an ATS checker?
An ATS scanner focuses on text extraction and parsing compatibility — it tests whether the ATS can successfully read and extract your resume content. An ATS checker (like Mira Resume's free ATS Checker) goes further, scoring your resume against a specific job description by analyzing keyword matching, section completeness, bullet point impact, and formatting safety. Both tools are complementary: use the scanner to fix parse errors first, then use the checker to optimize for the specific role.
What happens when my resume fails ATS parsing?
When your resume fails ATS parsing, the extracted data is incomplete or inaccurate. This means your experience, skills, and contact details may be missing from the recruiter's database. In practice, this causes your application to score very low on automated relevance ranking, even if you are highly qualified for the role. In many cases, a recruiter will never see your application at all because the ATS has already ranked it below hundreds of other candidates whose resumes parsed correctly.
Is Mira Resume's ATS scanner free?
Yes — Mira Resume's ATS scanner and checker tools are free to use with no credit card required. The free plan includes 50 AI credits per month, which cover ATS scanning, scoring, and basic optimization. For unlimited scans, advanced ATS reports, and full AI resume generation, you can upgrade to the Pro plan starting at $19/month.