B
Evidence Grade B
Graded
under review
Safe to Cite
Current
33%
33% -- featured snippet likelihood increase for Google featured snippets (2026)
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
33%
Unit
Percentage
Data Vintage
2026
Entity
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
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Ahrefs
Primary
Tier C
https://nexagrowth.co.uk/blog/header-tags/ ↗
Source Article
Best Practices for Header Tags and Content Hierarchy
- Header tags (H1-H6) are crucial for structuring content and guiding both search engines and readers.
- A well-structured page improves readability, user engagement, and search rankings.
- There should only be one H1 tag per page, while H2s, H3s, and so on, are used for major and deeper subsections…
Original Research
Ahrefs
· Original study ↗
Methodology
Ahrefs research, cited by Nexa Growth
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Google featured snippets: 33% featured snippet likelihood increase. Source: Ahrefs (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/ahrefs-structured-headers-snippets-33
HTML Embed
<blockquote cite="https://lighthousedata.io/data/ahrefs-structured-headers-snippets-33" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>33%</strong> -- featured snippet likelihood increase for Google featured snippets<br><small>Source: Ahrefs (2026) · <a href="https://lighthousedata.io/data/ahrefs-structured-headers-snippets-33" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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