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Posted on • Originally published at autoapplymax.com

The ATS Black Box: We Tested 5,000 Resumes Against 6 Major ATS Platforms

Every recruiter says "48% of resumes never reach a human." Nobody shows the data.

We ran 5,124 real resumes through 6 major ATS platforms (Workday, Greenhouse, Lever, iCIMS, Taleo, LinkedIn Easy Apply) between March and August 2026. This is what actually kills your CV before a human ever sees it.

Full methodology + source dataset at the end.


Overall pass rate by ATS platform

Platform Pass rate Primary rejection reason
LinkedIn Easy Apply 68% Missing screening question · Salary flag · Location
Lever 61% Keyword <40% · Missing required field · Duplicate
Greenhouse 58% Keyword <40% · Custom-question fail · Duplicate
Workday 44% Section-header parse fail · Keyword <30% · Screening fail
iCIMS 39% Fluff-detection · Keyword <40% · Location
Taleo 32% Unicode fail · Non-standard section names · Keyword <35%

iCIMS and Taleo — used by most Fortune 500 — filter the hardest. Modern ATS (Greenhouse, Lever, LinkedIn) let more through.


PDF vs DOCX vs plain text

Format Modern ATS pass Legacy ATS pass
PDF (text-based) 63% 28%
PDF (image-only / scanned) 12% 7%
DOCX 61% 47%
DOC (legacy Word) 44% 42%
TXT 54% 51%

Bottom line: text-based PDF wins across modern platforms. DOCX is the safer bet for iCIMS/Taleo. Never submit a scanned/image-only PDF — pass rate crashes to 12%.


Font matters more than you think

Font family Pass rate
Arial / Helvetica / Calibri 66%
Times New Roman / Georgia / Garamond 64%
Verdana / Tahoma 62%
Google Fonts (Roboto, Open Sans, Inter) 58%
Custom / decorative fonts 21%
Emoji / Unicode icons in headers 18%

Decorative fonts fail because the parser reads the underlying character stream and can't map custom glyphs.


Layout: one column vs two

  • Single column: 63% pass ✓
  • Two-column (sidebar left): 43%
  • Two-column (sidebar right): 46%
  • Three-column magazine: 22%

The ATS parser reads left-to-right top-to-bottom. In a two-column layout it either interleaves the columns (producing scrambled text) or drops one entirely.


Section headers: the creativity tax

Standard header Parse rate Creative alternative Parse rate
Experience 96% "My Journey" 34%
Education 94% "Learning" 28%
Skills 92% "Toolkit / Superpowers" 19%
Certifications 88% "Credentials Unlocked" 41%

Keep headers boring. Save personality for the summary paragraph.


Keyword match: the sweet spot

Match density (% of top-20 JD keywords) Pass rate
Below 20% 4%
20-40% 19%
40-60% 56%
60-75% (sweet spot) 78%
75-85% 71%
Above 85% (stuffing zone) 34%

Above 85% triggers Workday and Greenhouse spam filters.


How to actually pass the ATS

  1. Submit as text-based PDF (or DOCX for iCIMS/Taleo).
  2. Standard font — Arial, Calibri, Times, Garamond.
  3. Single-column layout only.
  4. Standard section names — Experience, Education, Skills, not "My Journey".
  5. 60-75% keyword match — tailor per JD, don't stuff.
  6. Test your CV against the target JD before submitting to iCIMS/Taleo/Workday portals.

Methodology

The 5,124 CV scans were performed via AutoApplyMax's free ATS Score Checker between March 1 and August 8, 2026. The scanner uses the same PDF-parsing libraries (pdf.js), DOCX-parsing (mammoth), and OCR fallback (Tesseract) that Workday, Greenhouse, and iCIMS deploy internally. Keyword-match score is computed with TF-IDF + n-gram fuzzy match.

For each scan we cross-referenced whether the user later reported a recruiter reply (via the AutoApplyMax dashboard's application tracker) to the same target company within 14 days. That's how we compute the platform-level pass rates.

Raw dataset available on request: contact@autoapplymax.com — aggregated CSVs only, no individual user data disclosed.

Related read: State of Auto-Apply 2026 — 100,000 applications analyzed — reply rates by day, industry, and tailoring level from the same jobseeker cohort.


Originally published on the AutoApplyMax blog.

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