GTmetrix Performance Blog
News, updates and guides on GTmetrix and general web performance
Advanced Options for PRO (formerly Developer Toolkit)
GTmetrix has a ton of great features available in our Basic account (Sign up if you haven’t yet – it’s free!) – but for those who wanted more advanced insights, we’ve listened to your feedback and created the Developer Toolkit – a bundle of features that can help you get the most out of GTmetrix.
New Default Screen Resolution and Browser for Tests
GTmetrix will now default tests to a screen resolution of 1366×768, using Chrome as the Browser Option.
How to Override your DNS with GTmetrix
With our Override DNS feature, you can now specify a hostname and IP address to ensure your site is analyzed how you need it to.
How to use Presets with GTmetrix
Save your favourite and most used analysis options in a preset for convenient one-click analysis.
Testing your page in multiple scenarios is key when it comes to optimizing for performance. We’ve made it easier to do so with the introduction of Analysis Presets
How to Simulate Devices With GTmetrix
GTmetrix now allows you to test your page’s performance on them by modifying the screen resolution, user agent and device pixel ratio to each device’s technical specifications.
