B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
20.4%
20.4% -- mobile traffic uplift for ecommerce customer (2025)
Capitalizing title tags resulted in a 20.4% uplift in mobile organic traffic for an ecommerce customer in an SEO split test.
- Desktop traffic impact was inconclusive during the same test
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
20.4%
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
95
Source Trust
50
Citation Chain
90
Independence
30
Methodology
45
Freshness
79
Source
SearchPilot
Primary
Tier A
https://www.searchpilot.com/resources/case-studies/this-test-revealed-an-unexpected-seo-signal-hidin… ↗
Source Article
This Test Revealed an Unexpected SEO Signal Hiding in Plain Sight
Start here: how our SEO split tests work
If you aren't familiar with the fundamentals of how we run controlled SEO experiments that form the basis of all our case studies, then you might find it useful to start by reading the explanation at the end of this article before digesting the details of the…
Original Research
SearchPilot
· Original study ↗
Methodology
Controlled SEO experiment
Methodology documented
Segmentation
Channelrss_feed
Cite this stat
Plain Text
ecommerce customer: 20.4% mobile traffic uplift. Source: SearchPilot (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/seo-title-tag-capitalization-mobile-traffic-uplift
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<blockquote cite="https://lighthousedata.io/data/seo-title-tag-capitalization-mobile-traffic-uplift" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>20.4%</strong> -- mobile traffic uplift for ecommerce customer<br><small>Source: SearchPilot (2025) · <a href="https://lighthousedata.io/data/seo-title-tag-capitalization-mobile-traffic-uplift" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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