B
Evidence Grade B
Graded
under review
Safe to Cite
Recent
2.4%
2.4% -- click through rate change for Website headings (sentence case vs title case) (2025)
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
2.4%
Unit
Percentage
Data Vintage
2025
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
Semrush
Primary
Tier C
https://notusdigital.co.uk/improve-conversions-title-or-sentence-case/ ↗
Source Article
Title vs Sentence Case: Which Converts Better? | Notus
What’s in a word…casing?
After writing my last post on conversion quick wins, I touched upon the importance of compelling headlines. This led me to ponder a question I’ve wrestled with for years: Should my headings be in sentence case or title case?
As any diligent web developer would, I turned to G…
Original Research
Semrush
· Original study ↗
Methodology
Semrush A/B split test comparing sentence case vs title case in headings; sentence case produced a 2.4% decrease in clicks. Test date and sample size not specified in the citing article.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Website headings (sentence case vs title case): 2.4% click through rate change. Source: Semrush (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/sentence-case-headings-click-decrease-2-4
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<blockquote cite="https://lighthousedata.io/data/sentence-case-headings-click-decrease-2-4" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>2.4%</strong> -- click through rate change for Website headings (sentence case vs title case)<br><small>Source: Semrush (2025) · <a href="https://lighthousedata.io/data/sentence-case-headings-click-decrease-2-4" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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