Web Vitals

Measure metrics for a healthy site

What is Web Vitals?

"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.

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Stats

By: addyosmani

View on Chrome Web Store

Users: 100,000+

Rating: 4.12 (41) ▲ 0.02

Version: 1.5.1 (Last updated: 2024-06-05)

Creation date: 2020-06-30

Risk impact: High risk impact

Risk likelihood: Very low risk likelihood

Manifest version: 3

Permissions:

tabs
storage
activeTab
scripting

Host permissions:

*://*/*

Size: 408.58K

Email: ad*****@gmail.com

Stats date:

Chrome-Stats Rank

# 2355 ▲ 11

Other rankings

#26 in Developer Tools ▲ 1

#12 in user experience keyword 16 ▲ 2

#34 in ux keyword 20 ▲ 5

#48 in badge keyword 9 ▼ 1

#66 in shift keyword 30 ▲ 5

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Other platforms

Not available on Firefox

Not available on Edge

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Summary

Analyze keywords

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:

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 Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.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 measuring Cumulative Layout Shifts
Clear display of CLS score
Provides valuable insights for web performance optimization

Cons

Inconsistent results with other performance measurement tools (e.g. PageInsights API)
Issues with detecting First Input Delay on many websites
Inability to disable flickering numbers, causing distraction

Most mentioned

Inconsistent results with other performance measurement tools
Difficulty in detecting First Input Delay
Display of CLS score
Flickering numbers causing distraction

Recent reviews

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Abner Wirtz, 2024-06-07

Love the extension! It would be valuable to see mobile metrics vs desktop though as Google looks at the mobile version first of all.

Kristina A, 2021-01-14

Mr Jack, 2024-04-05

View all user reviews

Safety

Risk impact

Web Vitals is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this extension. Review carefully before installing. We recommend that you only install Web Vitals if you trust the publisher.