Web Vitals

Measure metrics for a healthy site

Web Vitals Extension: UX Metrics for Your Site

"Web Vitals" is a Chrome extension that gauges real-time user experience metrics critical for a healthy website. It assesses Core Web Vitals to provide feedback on loading, interactivity, and layout stability. Features include an Ambient Badge indicating metric success, a detailed popup for metric drill-down, and an overlay for continuous on-page metric display. It aligns with Chrome's measurement standards and integrates real-user data to benchmark against other users' experiences.
Install from Chrome Web Store

Extension stats

Users: 100,000+
Rating: 4.21
(43)
Version: 1.5.3 (Last updated: 2024-09-12)
Creation date: 2020-06-30
Risk impact: High risk impact
Risk likelihood:
Manifest version: 3
Permissions:
  • tabs
  • storage
  • activeTab
  • scripting
Host permissions:
  • *://*/*
Size: 407.55K

Other platforms

Web Summit 2024 (v24.4.9)
3.18 (359) 84,386+
Not available on Firefox
Web Vitals (v3.9.16.1416)
4.20 (14) 1,146+
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Extension summary

Web Vitals are quality signals key to delivering great UX on the web (https://web.dev/vitals). This extension measures the Core Web Vitals, providing instant feedback on loading, interactivity and layout shift metrics. It is consistent with how these metrics are measured by Chrome and reported to other Google tools (e.g. Chrome User Experience Report, Page Speed Insights, Search Console).

The extension supports all of the Core Web Vitals and captures:

Largest Contentful Paint Cumulative Layout Shift Interaction to Next Paint

It also supports the diagnostic metrics:

Time to First Byte First Contentful Paint

And finally, it temporarily supports the following deprecated metrics:

See more

User reviews

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 Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.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
  • Works wonderfully well
  • Thanks for the super useful extension
  • It shows the CLS score. That's a big help.
Cons
  • Doesn't work most of the time. Just says 'Web Vitals are unavailable for this page'
  • The flickering numbers are distracting and cannot be disabled.
Most mentioned
  • Doesn't work most of the time. Just says 'Web Vitals are unavailable for this page'
  • The flickering numbers are distracting and cannot be disabled.
  • It shows the CLS score. That's a big help.
User reviews
First Input Delay Waiting for input… It still working after 4 hours, no indicator in %, just standing there while all the other measurements finished their job on time.
by Vesna K., 2024-08-17

by 李LONGFEI, 2024-07-24

Works wonderfully well
by Jovan Ralić, 2024-06-25
View all user reviews

Extension safety

Risk impact

Web Vitals requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk likelihood

Web Vitals has earned a good reputation and can be trusted.

Upgrade to see risk analysis details

Promo images

Web Vitals small promo image
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