B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
70.5%
70.5% -- browser market share for Chrome (2025)
Chrome holds 70.5% of the browser market share.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
70.5%
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
kirro.io
Primary
Tier C
https://kirro.io/cookieless-ab-testing ↗
Source Article
Cookieless tracking for A/B testing: what works in 2026
Most A/B testing tools use first-party cookies. That’s the kind your own website sets. Third-party cookies, the kind advertisers use to follow you across the internet, are a different thing entirely. The “death of cookies” headlines? They’re about advertising. Not testing.
Google actually reversed i…
Original Research
kirro.io
· Original study ↗
Methodology
Browser market share cited in vendor blog on cookieless A/B testing
Methodology documented
Trend Over Time
| Period | Value | Change |
|---|---|---|
| 2010-08 | 7.52% | |
| 2011 | 20% | +166.0% |
| 2023-01 | 65% | +225.0% |
| 2024 | 65% | 0% |
| 2025 (current) | 70.5% | +8.5% |
| 2025 (current) | 65% | -7.8% |
Segmentation
Industrymarketing
Cite this stat
Plain Text
Chrome: 70.5% browser market share. Source: kirro.io (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/chrome-browser-market-share-2025
HTML Embed
<blockquote cite="https://lighthousedata.io/data/chrome-browser-market-share-2025" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>70.5%</strong> -- browser market share for Chrome<br><small>Source: kirro.io (2025) · <a href="https://lighthousedata.io/data/chrome-browser-market-share-2025" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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