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WordPress Optimization Guide
A step-by-step guide on how to optimize your WordPress installation.
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Why is GTmetrix Seeing a File I Have Deleted From My Website?
We discuss why GTmetrix may be seeing a file on your website that you think shouldn’t be there.
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Why is GTmetrix seeing a different version of my page?
We explain why GTmetrix may sometimes not see the same content you’re seeing in your browser.
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WP Bullet Agency – GTmetrix Insights Help Triple Google Traffic
Editor’s note: This guest post is brought to you by Mike Andreasen, Founder at WP Bullet. “GTmetrix helps us find performance problems before Google notices!”
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Set Default Analysis Options for GTmetrix Tests
Do you frequently test with a specific set of Analysis Options? Set your own Default Analysis Options in User Settings.
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Don’t Chase Perfect Scores
We explain why you shouldn’t chase perfect scores on GTmetrix (or any performance tool).
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Lighthouse 8.3.0 Update
We’ve upgraded GTmetrix to Lighthouse 8.3.0 – read on for changes that come with this release.
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Adding Custom CDN Hostnames
Last Updated: April 13, 2026 If you’re sure your website uses a performant and reputable CDN, you can add the hostname to GTmetrix tests to avoid triggering the “Use a CDN” audit.
