GTmetrix Performance Blog
News, updates and guides on GTmetrix and general web performance
Author: Ian
How to Override Your DNS With GTmetrix
Get GTmetrix to use a custom DNS when performing tests.
How to Test With Custom Connection Speeds With GTmetrix
Test your page load on customized connection speeds with GTmetrix.
How to Use Presets With GTmetrix
Save your favourite and most used analysis options in a preset for convenient one-click analysis.
How to Simulate Devices With GTmetrix
GTmetrix allows you to test your page’s performance on mobile by modifying the screen resolution, user agent, and device pixel ratio to each device’s technical specifications.
Upcoming GTmetrix Test Server Changes
We’re making some important changes to our global test servers.
