Web Vitals Tester

Analyze Web Vitals score and diagnostic
What is Web Vitals Tester?
"Web Vitals Tester" is a Chrome extension that provides a comprehensive analysis into your website's performance. It examines the Core Web Vitals metrics; Largest Contentful Paint, First Input Delay, and Cumulative Layout Shift, crucial to delivering exceptional user experience as specified by Google. It provides insights into your website's load times, responsiveness, and visual page stability. With a user-friendly interface, this extension is the perfect tool to benchmark your website's performance and find ways to improve it.

Extension stats

Users: 1,000+
Rating: 5.00 (1)
Version: 0.2.0 (Last updated: 2022-01-18)
Creation date: 2022-01-18
Risk impact: High risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
Permissions:
  • tabs
  • storage
  • activeTab
  • http://localhost/
  • http://*/*
  • https://*/*
  • https://www.googleapis.com/pagespeedonline/v5/runPagespeed?*
Size: 1.12M

Other platforms

Not available on Firefox
Not available on Edge
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Extension summary

Analyze Web Vitals score and metrics.

Check the performance of web site:

  • Largest Contentful Paint (LCP);
  • First Input Delay (FID);
  • Cumulative Layout Shift (CLS).

Web Vitals is a recent Google initiative to provide unified guidelines for measuring essential quality elements to deliver an exceptional user experience on websites.

Google's Web Vitals initiative aims to simplify the landscape and help web developers focus on the metrics that matter most, the Core Web Vitals.

With Web Vitals, Google is specifying a set of 3 distinct performance metrics to make up their "Core Web Vitals" that they use to make a judgement on whether or not your website has a good user experience. Google is also specifying a few leading indicator metrics in the Web Vitals specification that are not classified as "core."

Google has been promoting the importance of website speed since their inception, so no surprise here. However, this is the first time they explicitly identify the specific performance metrics that are used to drive their search rankings.

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Extension safety

Risk impact

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

Risk likelihood

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

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Promo images

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