B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
20%
20% -- bounce rate increase for websites with poor readability (2026)
Unreadable websites can experience up to 20% higher bounce rates compared to readable websites.
- Stated as an upper bound ('up to 20% higher')
- Original source cited as 'CRO Benchmark' without publication date or methodology
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
20%
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
CRO Benchmark
Primary
Tier C
https://www.artisticore.com/mental-health-website-design/ ↗
Source Article
Mental Health Website Design: Small Details That Cause Real Impact
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Mental Health Website Design: Small Details That Cause Real Impact
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Original Research
CRO Benchmark
· Original study ↗
Methodology
Figure stated as an upper bound ('up to 20% higher') compared to readable websites; source referred to only as 'CRO Benchmark' with no methodology or date given.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
websites with poor readability: 20% bounce rate increase. Source: CRO Benchmark (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/unreadable-websites-bounce-rate-2026
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<blockquote cite="https://lighthousedata.io/data/unreadable-websites-bounce-rate-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>20%</strong> -- bounce rate increase for websites with poor readability<br><small>Source: CRO Benchmark (2026) · <a href="https://lighthousedata.io/data/unreadable-websites-bounce-rate-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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