LCP & CLS Monitor
Developer Tools
Core Web Vitals Largest Contentful Paint and Cumulative Layout Shift Monitor
Users
1K
Rating
5.0
Reviews
2
7D Growth
0|0%
Stable signalUnknownLow-risk permissions
CLS Visualizer
Visualizer the CLS of any webpage
Users9KCurrent public install base
Rating4.4Store average score
Reviews11Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview
1 assetsCLS Visualizer Media preview
Trend
User growth trend
Review user movement across collected snapshots.
User Growth Over Time
Rating trend
7-day rating trend
View collected rating snapshots from the latest 7-day window to assess rating stability.
7-day rating change
Start
4.36
Latest
4.36
7-day rating change
0.00
2026年7月13日2026年7月19日
Growth overview
Daily, weekly, and monthly growth
Compare 1-day, 7-day, and 30-day net growth and growth rate.
1-day growthFlat
00%7-day growthFlat
00%30-day growthDeclining
-1K-10%Technical snapshot
Version, languages, and crawl freshness
Review publication date, version, supported languages, and crawl timestamps.
Version1.4
ManifestV3
Size17.27KiB
Languages1English
Published
Store updated
Last crawled
English
Overview
Product summary
Review the store description, core capabilities, and common use cases.
This plugin will highlight and visualize the Cumulative Layout Shift.
Cumulative Layout Shift (CLS) is an important, user-centric metric for measuring visual stability because it helps quantify how often users experience unexpected layout shifts—a low CLS helps ensure that the page is delightful.
Unfortunately the CLS is a pain to debug without visualisation
Reviews
Recent review snapshot
Inspect the latest comments and rating distribution.
Store average score4.4Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average4.6Average computed only from synced review bodies below
Reviews with text8Synced review bodies
Total ratings / reviews11Chrome Web Store public rating/review count
Store average score: 4.4. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.
Related products
Similar and related extensions
Review related products from the Chrome Web Store detail page.
Analytics Debugger
Developer Tools
FreemiumConfidence 64
Your Single Source of Truth (SSOT) for debugging analytics implementations
Users
100K
Rating
4.6
Reviews
233
7D Growth
0|0%
Core Web Vitals Test
Developer Tools
Check Core Web Vitals and compare metrics for desktop and mobile devices. Check pagespeed insights using our Chrome extension.
Users
8K
Rating
4.9
Reviews
30
7D Growth
0|0%
Core Web Vitals Visualizer
Developer Tools
Measure, visualize, and debug Core Web Vitals in real time. CrUX history, LCP/CLS/INP breakdowns and performance experiments
Users
10K
Rating
5.0
Reviews
19
7D Growth
0|0%
Datalayer Checker
Developer Tools
Likely PaidConfidence 88Platform Stripe
The easiest way to debug and check the dataLayer implementations without having to use the browser console!
Users
100K
Rating
4.5
Reviews
49
7D Growth
0|0%
Redirect Path
Developer Tools
The HTTP Header & Redirect Checker for SEO
Users
300K
Rating
4.3
Reviews
199
7D Growth
0|0%
greatttttt
Best tool for cls
Thank you for this tool!
Het werkt 5 steren en bedankt
unfortunately no longer works. The list items in pop up are not clickable
Дуже хороший аддон. Незамінний для оптимізації показника CLS
Great tool - thanks a lot! But I think it only shows the CLS in the viewport - right?
Great little tool!