Take a Speedtest directly from your toolbar to quickly test your internet performance without interruption.

Enables uberAgent to collect web app usage and performance data (e.g., foreground tab, page load duration) from Chrome.

Allows to manage your clipboard history and improve performance when working with text notes

Exceptional ad blocking performance. Block banner, video ads, context ads, popups, and more

Analyze the performance of your webpages and get specific suggestions on how to optimize them.

Email marketing & newsletter creator for Gmail. Design emails, create mailing lists & track performance. All inside Gmail.

Create, edit and send HTTP requests. Run API tests, validate HTTP responses and measure API performance.

Get insight into the performance of the website in the current tab - sort of a mini live version of WebPageTest

A devtool extension for inspecting the performance of Vue components.

A devtool extension for inspecting the performance of React components.

Ruto brings the best XPath to you. We are striving hard to improve better performance and more new features

Shows SEO issues as you navigate pages. Displays performance data and full AMP status and errors for HTML pages.

This extension helps in measuring page load time and other relevant details

Get the page load times of any web page! app.telemetry Page Speed Monitor shows offset and duration of website performance metrics.

Improve your call center performance and productivity while smoothing user experience and business process.

Hugo is a meeting notes platform for fostering a culture that improves meeting performance and cohesion for hybrid work teams.

Analyze, debug, and improve the performance of your Lightning application (Developer Preview)

Bookmark your favorite tab groups, improve your browser's performance, and avoid the Too Many Tabs Open syndrome. Have you ever…

Get powerful, real-time tracker analytics. Audit trackers from one entry point to improve user experience and website performance.

Gauge measures and displays your recent internet performance characteristics.

Quickly test your website to see if there are any issues with accessibility, browser compatibility, security, performance and more.

Monitor Memory, CPU utilization & CPU Temp (Chome OS). Clean up memory by dicardings tabs. Clear browsing data.

Control FPS in your browser for testing, performance investigation or to stress your app with dropped frames.

List Goal finds simple ways for you to get more email subscribers and monitors your email list performance.

Leetcode timer and performance tracking

The easiest way to measure your performance budget

Measures webpage load and render time as you go around. Alerting and troubleshooting are available with the full version.

Page performance stats, by Puneet Mohan Sangal (pmsangal.tumblr.com)

Get statistics and insights on any video's performance on YouTube and Facebook.

A browser developer tools extension, which will help you to inspect the performance of React Js components