SEO Site Speed Tools

18

This is a shortlist of SEO Site Speed Tools. This list is manually curated and frequently updated by ex-Google engineer Fili.

Last updated: Yesterday

Cumulative Layout Shift Debugger (CLS)

The purpose of the Cumulative Layout Shift Debugger is to visualize the cumulative layout shifts of any webpage so it becomes easier to identify what needs improving on mobile and/or desktop regarding CLS.

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Ampify

Ampify will convert your site to an identical AMP version of itself.

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Dareboost

Test, Analyze and Optimize your website for Web Performance, SEO, Security, Quality and more.

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Google Lighthouse

Lighthouse is an open-source, automated tool for testing and improving the quality of web pages. It has audits for site speed performance, accessibility, progressive web apps, and more.

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Google PageSpeed Insights

Google PageSpeed insights tells you whether or not Google sees your site as lightning-fast or snail-slow.

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GTmetrix

GTmetrix gives insight and offers actionable recommendations to optimize the performance of the web page.

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ImageOptim

Web service for image compression. Easily resize and optimize images on your server.

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Layout Shift GIF Generator

Easily identify problematic layout shifts in the viewport on mobile and desktop. Available as a simple command line tool, or as an online tool.

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Mobile Website Speed ​​Testing Tool

Google's free Mobile Website Speed ​​Testing Tool checks your website for usability and loading speed, and generates a detailed report that you can email to you.

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Responsive Image Breakpoints Generator

This breakpoints generator tool helps developers automatically find the optimal image sizes needed for the best viewing experience in web and mobile apps on a variety of screen sizes.

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ShortPixel

ShortPixel is a high-powered compressor and optimizer that reduces image file sizes to improve website performance.

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sitespeed.io

Sitespeed.io is a set of Open Source tools that makes it easy to monitor and measure the performance of your web site.

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Speed Monitor

Track your website speed and performance data every day

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Squoosh

Compress and compare images with different codecs, right in your browser.

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TinyJPG

Smart JPEG and PNG compression.

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Unused CSS

This tool checks your website for unused CSS selectors. It follows internal links on your website recursively and looks on multiple pages.

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Web Page Test

WebPageTest is a web performance tool that uses real browsers to access web pages and collect timing metrics.

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