After years of working on websites I’ve gathered a constantly updating list of my favorite tools. Below I’ve compiled my list of the best free website speed tests with their features. Enjoy!

GTmetrix Website Speed

GTmetrix is by far my favorite, it pulls data from Google’s Page Speed Insights and Yahoo’s Yslow services along with their own additional tests and metrics. Even the free tier offers a ton of great features, for example you can keep a history if you test the same page more than once, you can change the browser and browser extensions that are used for the test, you can change the location the test is from, and more. Upgrading to Pro adds even more features.

Link: http://gtmetrix.com/

Features

• Page Speed
• YSlow
• Watefall DIsplay (Timeline)
• Total Page Size
• Total Number of Requests
• Relative Performance Measurements
• Customizable options
  • Location
  • Browser
  • Browser addons

Pingdom Website Speed Test

Link: http://tools.pingdom.com/fpt/

Features

• Waterfall Display
• Performance Grade
• Page Analysis
  • Server Response Code
  • Load Time Analysis
  • Size Analysis
  • Request Analysis
• Historical Data For:
  • Page Load Time
  • Page Size and Request Count
  • Page Speed Score

WebPagetest – Website Performance

Link: http://www.webpagetest.org/

Features:

• Load Times
• Time to First Byte
• Watefall Display
• Content Breakdown
• Performance Review

Google PageSpeed Insights

Link: https://developers.google.com/speed/pagespeed/insights/

Features

• Independent Desktop & Mobile Scores
• Suggestion Summaries
• Help Documentation for Fixes