B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
50%
50% -- bounce rate increase for website visitors (2026)
Increasing page load time from 2 seconds to 3 seconds can raise bounce rates by 50%.
Attribution:
View source
Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
50%
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
95
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
BSS Commerce
Primary
Tier A
https://bsscommerce.com/services/blog/site-speed-optimization/ ↗
Source Article
Site Speed Optimization: Metrics, Tools & Techniques
Site speed optimization is one of the most effective ways to improve user experience, search visibility, and conversion rates. In today’s competitive online landscape, visitors expect websites to load almost instantly, and even a small delay can lead to higher bounce rates and lost opportunities. Mo…
Original Research
BSS Commerce
· Original study ↗
Methodology
Increasing load time from 2 seconds to 3 seconds can raise bounce rates by 50%.
Segmentation
Industrymarketing
Cite this stat
Plain Text
website visitors: 50% bounce rate increase. Source: BSS Commerce (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/bounce_rate_increase
HTML Embed
<blockquote cite="https://lighthousedata.io/data/bounce_rate_increase" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>50%</strong> -- bounce rate increase for website visitors<br><small>Source: BSS Commerce (2026) · <a href="https://lighthousedata.io/data/bounce_rate_increase" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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