What Is an ATS Parsing Error?

An ATS parsing error happens when an applicant tracking system fails to correctly read and extract information from your resume. Instead of seeing your name, work history, and skills in the right sections, the ATS scrambles them—mixing contact info with job duties, or dropping entire sections entirely. The system then flags you as a poor keyword match or an incomplete application, and you're rejected before a human ever sees your file.

Parsing is the ATS's first job: convert your PDF or Word file into structured data it can search, score, and file. When that conversion fails, everything downstream fails with it.

Why Do ATS Systems Fail to Parse Resumes?

Most parsing errors stem from resume formatting choices that confuse the ATS software:

  • Complex layouts: Multi-column designs, sidebars, tables, or text boxes force the ATS to read left-to-right-to-left instead of top-to-bottom, jumbling the order.
  • Unusual fonts or decorative elements: Graphics, icons, colored boxes, or custom fonts get stripped or misread as garbage characters.
  • PDF conversion issues: Some resumes exported from design software lose structure when converted to text; the ATS sees disconnected fragments instead of a coherent document.
  • Non-standard file formats: Submitting as .PNG, .JPG, or a scanned image forces the ATS to use OCR (optical character recognition), which is far more error-prone than parsing clean text.
  • Headers and footers: Information locked in headers/footers often gets duplicated, misplaced, or ignored by the parser.
  • Unusual section labels: Using "Core Competencies" instead of "Skills," or "Professional Background" instead of "Work Experience" can confuse older ATS systems expecting standard terminology.

Signs Your Resume Was Misparsed by an ATS

You rarely get direct feedback that your resume was parsed incorrectly—but these indirect signals suggest it happened:

  • You get auto-rejected instantly. An application closes within minutes or hours, before anyone could have reviewed your qualifications. This often means the ATS couldn't extract enough keywords or structure to rank you as a fit.
  • Recruiter feedback doesn't match your resume. A recruiter tells you that you lack a skill you definitely listed, or asks about experience you clearly documented. This means the ATS either dropped that section or filed it under the wrong heading.
  • You're rejected for roles you're clearly qualified for. If you're applying to jobs that match your experience exactly and still getting rejected, a parsing error may have stripped keywords the ATS was searching for.
  • Your match score varies wildly between different scoring tools. If ATS match score differs dramatically between Jobscan and Careerflow for the same resume, it's often because each tool parses your file differently—a red flag that your formatting is fragile.
  • You see scrambled text in the preview. Some ATS systems let you view how they parsed your resume. If sections are out of order, contact info is in the wrong place, or text looks garbled, parsing failed.

How to Fix Your Resume to Prevent Parsing Errors

Fix these issues before submitting to any ATS-gated application:

  1. Use a single-column, top-to-bottom layout. Remove sidebars, multi-column designs, and text boxes. Stick to left alignment with standard margins.
  2. Replace graphics with text. Don't use icons, skill bars, or colored boxes. If you need visual emphasis, use bold and capital letters instead.
  3. Use standard fonts. Stick to Arial, Calibri, Times New Roman, or Helvetica. Avoid decorative fonts or anything custom.
  4. Submit as a .PDF or .DOCX file only. Never upload an image, .PNG, or scanned PDF unless the job posting explicitly requires it (rare).
  5. Use standard section headers. Use "Work Experience" or "Employment History," "Skills," "Education," "Contact Information," not creative alternatives.
  6. Avoid tables and headers/footers. Keep all content in the main body of the document in plain paragraph or list format.
  7. Test your resume with an ATS parser. Free tools like Jobscan or similar services show you exactly how an ATS will read your file. Use this to catch issues before you apply.

Parsing Errors vs. Real Rejection

Not every rejection is a parsing error. Sometimes your resume was read perfectly—it just didn't match the job. But if you're getting rejected consistently for roles you're qualified for, and your formatting is complex, parsing is likely the culprit.

The safest move: use a clean, ATS-friendly template (most major job boards offer free ones), and test it before sending. A plain, readable resume gets parsed correctly every time.

Speed Up Rejections by Moving First

Parsing errors compound when you're the 200th applicant. By then, the hiring team has already screened dozens of candidates, and an ATS error kills your chances before anyone even gets to the "should we read this?" stage. GiraffyReach auto-applies to fresh postings within hours of publication, which means your resume lands in the inbox when the ATS is parsing the first wave of applications—before threshold score adjustments tighten and before the pool gets too large to review. The earlier you submit a clean resume, the less room there is for parsing errors to bury you.