CLS Visualizer

CLS Visualizer

Visualizer the CLS of any webpage

What is CLS Visualizer?
CLS Visualizer is a Chrome extension specifically designed to evaluate and visualize the Cumulative Layout Shift (CLS) - a user-centric metric essential in measuring visual stability. Its functionality lies in its ability to quantify unexpected layout shifts on a webpage, providing a clear visual representation of these shifts for improved and simplified debugging and optimization. With CLS Visualizer, ensuring a delightful user experience by maintaining a low CLS becomes a straightforward task.
Merlin
Stats
Users: 9,000+
Rating: 4.36 (11)
Version: 1.4 (Last updated: 2022-11-20)
Creation date: 2020-11-12
Risk impact: Low risk impact
Risk likelihood: Very low risk likelihood
Manifest version: 3
Size: 17.68K
Stats date:

Other platforms

Not available on Firefox
Not available on Edge
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Merlin
Summary

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

User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Useful for optimizing CLS
  • Provides valuable insight into CLS
  • Easy to use
Cons
  • Popup list items not clickable (issue reported by one user)
  • May only show CLS in the viewport
Most mentioned
  • Useful for optimizing CLS
  • Easy to use
Recent reviews
by Philipp Nies Philipp Nies, 2024-01-10

Best tool for cls
by Bertan mızrak Bertan mızrak, 2023-09-19

Thank you for this tool!
by Osama Raya Osama Raya, 2023-02-26
View all user reviews
Safety
Risk impact

CLS Visualizer is relatively safe to use as it requires very minimum permissions.

Risk likelihood

CLS Visualizer has earned a good reputation and can be trusted.

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Screenshots
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