B
Evidence Grade B
Safe to Cite
Dated
0
0 -- cumulative layout shift target for Google's Page Experience Update (2021)
Attribution:
View source
Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
0
Unit
Score
Data Vintage
2021
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
50
Citation Chain
60
Independence
50
Methodology
45
Freshness
95
Sources (6)
Google
Primary
Tier A
https://webmasters.googleblog.com/2020/05/evaluating-page-experience.html ↗
Source Article
Core Web Vitals Optimization: INP, LCP, CLS Guide 2025
Core Web Vitals Optimization: INP, LCP, CLS Guide 2025
Master Core Web Vitals optimization in 2025 with this comprehensive guide covering INP (Interaction to Next Paint), LCP (Largest Contentful Paint), and CLS (Cumulative Layout Shift). Learn proven strategies, Next.js implementation examples, and …
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Original Research
Google
· Original study ↗
Methodology
Target score for the 75th percentile of page loads, measured using Chrome User Experience Report, PageSpeed Insights, or Search Console (Core Web Vitals report)
Segmentation
Industrymarketing
Cite this stat
Plain Text
Google's Page Experience Update: 0 cumulative layout shift target. Source: Google (2021). Via Lighthouse Intelligence -- https://lighthousedata.io/data/google_page_experience_update_2021_cls_target
HTML Embed
<blockquote cite="https://lighthousedata.io/data/google_page_experience_update_2021_cls_target" 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 target for Google's Page Experience Update<br><small>Source: Google (2021) · <a href="https://lighthousedata.io/data/google_page_experience_update_2021_cls_target" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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