B
Evidence Grade B
Graded
under review
Safe to Cite
Recent
21.6%
21.6% -- conversion rate lift from mobile speed improvement for mobile web users across 37 brands (Google/Deloitte study) (2025)
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
21.6%
Unit
Percentage
Data Vintage
2025
Entity
Sample Size
37
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
Google/Deloitte
Primary
Tier C
https://preatheepsamuel.com/web-design-freelancer-coimbatore ↗
Source Article
Web Development in Coimbatore | SEO-Ready Sites from ₹20,000
Sites I've built, and what happened next.
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Arasu Dental Care
More detail +
An older site w…
Original Research
Google/Deloitte
· Original study ↗
Methodology
Google/Deloitte study across 37 brands and 30 million sessions; 0.1 second mobile speed improvement across the journey increased progression to form-submission page. Cited secondhand by freelancer site.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
mobile web users across 37 brands (Google/Deloitte study): 21.6% conversion rate lift from mobile speed improvement. Source: Google/Deloitte (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/mobile-speed-0-1s-lift-form-progression-21-6
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<blockquote cite="https://lighthousedata.io/data/mobile-speed-0-1s-lift-form-progression-21-6" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>21.6%</strong> -- conversion rate lift from mobile speed improvement for mobile web users across 37 brands (Google/Deloitte study)<br><small>Source: Google/Deloitte (2025) · <a href="https://lighthousedata.io/data/mobile-speed-0-1s-lift-form-progression-21-6" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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