SpeedScan is a Google PageSpeed Insights powered website speed test and SEO audit extension for Chrome.

Check any webpage instantly and view separate Desktop and Mobile performance results, including:

• Performance score from 0–100

• First Contentful Paint (FCP)

• Largest Contentful Paint (LCP)

• Speed Index

• Total Blocking Time (TBT)

• HTTPS status

• Real Google Lighthouse performance issues

SpeedScan clearly shows the problems slowing down your website, including:

• Render-blocking resources

• Unoptimized images

• Unused JavaScript and CSS

• Slow server response time

• Large DOM size

• Uncompressed text

• Other Google PageSpeed recommendations

Built for website owners, SEO professionals, WordPress users, developers, marketers, agencies, and webmasters.

The extension sends the current webpage to Google PageSpeed Insights and displays the results returned by Google. It does not create fake or estimated scores.

Scores may vary slightly between tests because server response, caching, network conditions, third-party scripts, and website content can change.

SpeedScan does not require users to create an account or enter an API key.