B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
57.37%
57.37% -- sites with duplicate h1 tags for websites (2025)
According to an SE Ranking study, 57.37% of websites/pages have duplicate H1 tags.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
57.37%
Unit
Percentage
Data Vintage
2025
Entity
Geography
Global
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
SE Ranking
Primary
Tier B
https://serpspur.com/the-state-of-on-page-seo-in-2025-navigating-the-new-realities-of-ai-user-trust-… ↗
Source Article
The State of On-Page SEO in 2025 - SERPSpur
The Paradigm Shift
On-page Search Engine Optimization (SEO) has undergone a fundamental transformation. Once a discipline governed by a checklist of technical tactics—keyword density, meta tag optimization, and precise anchor text ratios—it has evolved into a strategic practice centered on a holisti…
Original Research
SE Ranking
· Original study ↗
Methodology
SE Ranking study cited in article table
Methodology documented
Segmentation
IndustryMedia
RegionGlobal
RoleSEO Specialist
Channelsearch
Cite this stat
Plain Text
websites: 57.37% sites with duplicate h1 tags. Source: SE Ranking (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/duplicate-h1-prevalence-2025
HTML Embed
<blockquote cite="https://lighthousedata.io/data/duplicate-h1-prevalence-2025" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>57.37%</strong> -- sites with duplicate h1 tags for websites<br><small>Source: SE Ranking (2025) · <a href="https://lighthousedata.io/data/duplicate-h1-prevalence-2025" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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