Gtmetrix

GTmetrix is a free tool that analyzes your page's speed performance. Using Page Speed and YSlow, GTmetrix generates scores for your pages and offers actionable...

Free Web

PageSpeed Insights

PageSpeed is addon for Firebug (debugger addon for Mozilla Firefox ) for analyzing of page loading process and suggesting to webmaster how speed up page loading.

Free Open Source Mac Windows Linux Firebug Chrome ... Firefox

Google Lighthouse

Lighthouse is an open-source, automated tool for improving the quality of web pages. You can run it against any web page, public or requiring authentication.

Free Open Source Mac Windows Linux

Yellow Lab Tools

Yellow Lab Tools checks a website for both it's performance and the quality of the HTML, CSS and JavaScript code. The application is available online and as...

Free Open Source Web

DareBoost

DareBoost is an online tool to test, analyze and monitor your website: speed, SEO, quality, security. All you need for website optimization in a single service.

• Most relevant optimizations of all this kind of solution and very user friendly UI, I love this app :) theroundangel • Jan 2017 Disagree   Agree

Freemium Web

CheckPageSpeed.com

Website speed analyzer tool. Generate comprehensive performance reports for any web page. Review and evaluate the performance of a web page.

Free Web

WebO (Web Optimizer)

This project has been launched after the Russian web conference ClientSide2007. The goal was to gather not only theoretical information about websites speeding-up, but...

• Collects your eMail address then sends you to http://airee.international/ for the actual test - and that site is even worse for all the advertising it shows. Guest • Aug 2015 • 0 agrees and 1 disagrees Disagree   Agree

Free Web

WebsiteSpeedAnalysis.com

Website speed analysis tool. Generate reports detailing speed and performance for any website. Evaluate and review performance and efficiency recommendations.

Free Web

Yahoo! YSlow

YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages. YSlow is a Firefox add-on integrated with...

Free Open Source Mac Windows Linux Firebug Chrome ... Safari Opera Firefox

TestWebsitePerformance.com

Assess the load time and usability for any webpage. Generate a report to review and evaluate website performance and usability. The test results provide specific and...

Free Web

Calibre

Performance monitoring that gives the page speed insights you need to improve customer experience.

• I use Calibre to monitor every site I work on. It runs every day automatically. Guest • Aug 2017 Disagree   Agree

Commercial Web

SitePerformanceTest.com

Perform and explore an in-depth website analysis. Generate a comprehensive report to evaluate performance and usability ratings complete with improvement recommendations.

Free Web

Website-Grader.com

Website grader and perfomance report tool. Generate a report for any website to view the performance grade, usability grade, and overall grade.

Free Web

SiteSpeedTester.com

Evaluate the load speed and usability for any webpage. Generate a report to determine website performance with detailed efficiency recommendations and usability...

Free Web

TestWebSpeed.com

Evaluate the load speed and usability for any webpage. Generate a report to determine website performance with detailed efficiency recommendations and usability...

Free Web