B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
0
0 -- cumulative layout shift for page stability (2026)
A low Cumulative Layout Shift (CLS) score is considered to be 0.1 or less.
- The source specifies 0.1 or less as a benchmark target for a good score
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
0
Unit
Score
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.
Score breakdown
Extraction
95
Source Trust
60
Citation Chain
20
Independence
50
Methodology
45
Freshness
95
Sources (3)
Ryan Miller
Primary
Tier A
https://nightwatch.io/blog/core-web-vitals/ ↗
Source Article
Core Web Vitals: How to Optimize Them for User-Centric SEO
Unlocking the Secrets of Core Web Vitals
Hey there, Ryan Miller here, coming at you with the lowdown on Core Web Vitals (CWV). You’ve probably heard the buzz, seen the stats, and maybe even dipped your toes into optimizing these metrics. But today, we’re diving deep to unravel the crux of Core Web V…
Also cited by
2026-08-25
2026-09-01
Original Research
Ryan Miller
· Original study ↗
Methodology
The unexpected shifting of page elements while they load.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
page stability: 0 cumulative layout shift. Source: Ryan Miller (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/cls_measurement
HTML Embed
<blockquote cite="https://lighthousedata.io/data/cls_measurement" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>0</strong> -- cumulative layout shift for page stability<br><small>Source: Ryan Miller (2026) · <a href="https://lighthousedata.io/data/cls_measurement" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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