CLS Visualizer

by MarketingTracer · Developer Tools

FeaturedManifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Visualizer the CLS of any webpage

Users

9,000

0 in 30 days

Rating

4.4 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#11K

#9,100 among extensions

Version

1.4

updated 20 Nov 2022

Users

monthly, 3 years

Latest, 15 Oct 2026: 9,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years

Latest, 15 Oct 2026: 11 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About CLS Visualizer

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