B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
90%
90% -- abandonment rate for website users (2026)
90% of users will abandon a slow website in favor of a faster competitor.
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
90%
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
altersquare.io
Primary
Tier C
https://altersquare.io/blog/frontend-performance-optimization-not-one-time-task ↗
Source Article
Why Frontend Performance Optimization Is Not a One
Original Research
altersquare.io
· Original study ↗
Methodology
Secondary citation of survey research
Methodology documented
Segmentation
IndustryTechnology
RoleAll marketers
Channelmulti-channel
Cite this stat
Plain Text
website users: 90% abandonment rate. Source: altersquare.io (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/90-percent-abandon-slow-sites
HTML Embed
<blockquote cite="https://lighthousedata.io/data/90-percent-abandon-slow-sites" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>90%</strong> -- abandonment rate for website users<br><small>Source: altersquare.io (2026) · <a href="https://lighthousedata.io/data/90-percent-abandon-slow-sites" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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