B Evidence Grade B Graded accuracy verified by the review judge Safe to Cite Recent

25%

25% -- duplicate content share for web content (2025)

Name: Duplicate Content Share Statistics
Creator: Lighthouse Intelligence
Published: 2026-09-26

2025 · Google (Matt Cutts)

Between 25% and 30% of web content is duplicate content according to Matt Cutts.

Reported as a range: 25% to 30%

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Attribution: Google (Matt Cutts) View source

Lighthouse Research Team

Last verified: 2026-09-26 · How we verify data →

Source verified Evidence graded

Value

25%

Unit

Percentage

Data Vintage

2025

Entity

web content

Evidence Quality

Strong, reliable evidence

Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.

61/100 confidence

Single source - not yet corroborated

Score breakdown

Extraction

Source Trust

Citation Chain

Independence

Methodology

Freshness

Source

Google (Matt Cutts) Primary Tier C

https://seodefend.com/duplicate-content-problem/ ↗

Confidence: 55/100 Vintage: 2025 Channel: Deep Crawl

Source Article

According to Matt Cutts, former head of Google’s Search Spam, 25% to 30% of web content is a duplicate. The reader gets the information they are looking for, but the search engines do not know which page to prioritize since they all show the same piece. And because the content is similar, search eng…

Original Research

Google (Matt Cutts) · Original study ↗

Methodology

Attributed to Matt Cutts, former head of Google's Search Spam; range 25-30%, midpoint reported

Methodology documented

Segmentation

Industrymarketing

Cite this stat

Plain Text

web content: 25% duplicate content share. Source: Google (Matt Cutts) (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/duplicate-web-content-percentage

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<blockquote cite="https://lighthousedata.io/data/duplicate-web-content-percentage" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>25%</strong> -- duplicate content share for web content<br><small>Source: Google (Matt Cutts) (2025) · <a href="https://lighthousedata.io/data/duplicate-web-content-percentage" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>

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