The modern alternative to GTmetrix
Looking for GTmetrix alternatives?
Test and monitor website performance with DebugBear.
Get a high-level overview of your pages
Compare metrics at a glance
Each DebugBear project provides an overview page showing how your metrics have changed over the last 10 weeks. Or switch to viewing the last 10 days if you've made changes recently.
Lighthouse-based like GTMetrix
Both GTmetrix and DebugBear are built on top of Google's Lighthouse tool, which also delivers the PageSpeed Insights field data. But DebugBear actually provides the full in-depth Lighthouse report, including SEO and Accessibility metrics.
Core Web Vitals Field Data
DebugBear not only tests your pages on a schedule, it also regularly looks up the field data Google has collects as part of the Chrome User Experience Report. This is important, as it's what Google uses in its search rankings.
Dive deep into the data
More than just metrics
DebugBear collects in-depth debug data that helps you understand your metrics. Compare two test results and see exactly what changed.
Request waterfall
DebugBear and GTmetrix provide a request waterfall showing you in what order different parts of your page loaded. However, DebugBear a step further by exposing details like how different requests were prioritized by the browser.
Debug Web Vitals
See what element caused the Largest Contentful Paint and get a list of all layout shifts on the page.
Customize your tests
Test pages behind authentication
Got an app that's only accessible after logging in? Automatically fill out a login form before the test is run.
15 test locations
Run your tests where your users are, from 20+ locations around the world. Just like with GTmetrix.
Advanced features
There are many similar tools to GTmetrix. DebugBear shines at customizability. Specify exactly when your tests should run, set performance budgets, or track custom metrics with the User Timing API.
Monitor Interaction To Next Paint
INP: Google's new metric
Interaction to Next Paint becomes a Core Web Vitals metric that impacts SEO in March 2024.
Real user monitoring
Unlike GTmetrix, DebugBear also offers real user Core Web Vitals monitoring. Identify slow interactions and pages where you need to optimize.
See the most common interactions
See how your visitors interact with your website and what page elements most frequently cause slow interactions.
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