B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
40%
40% -- cookie opt in increase for DHL cookie banner A/B test (2026)
DHL saw cookie opt-ins increase by 40% in an A/B test of a left-justified banner layout with full text display.
- Result achieved via a left-justified banner layout with full text display
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
40%
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
DHL
Primary
Tier C
https://kukie.io/blog/improve-cookie-consent-rates ↗
Source Article
Improve Cookie Consent Rates Ethically | 2026 Guide | Kukie.io
The Consent Rate Problem
Websites with a legally compliant cookie banner - one that gives equal prominence to accept and reject options - see cookies rejected in roughly 60% of visits. That figure drops even further on privacy-conscious traffic sources and in countries like Germany and France, where…
Original Research
DHL
· Original study ↗
Methodology
Company A/B test cited by Kukie.io
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
DHL cookie banner A/B test: 40% cookie opt in increase. Source: DHL (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/dhl-banner-test-optin-40
HTML Embed
<blockquote cite="https://lighthousedata.io/data/dhl-banner-test-optin-40" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>40%</strong> -- cookie opt in increase for DHL cookie banner A/B test<br><small>Source: DHL (2026) · <a href="https://lighthousedata.io/data/dhl-banner-test-optin-40" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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