Lighthouse and PageSpeed Insights use simulated throttling to test your website. The data is actually always collected on a fast connection!
DebugBear actually slows down the network instead of relying on a simulation that's often inaccurate.
DebugBear always repeats tests before sending an alert, so you don't have to deal with issues you can't replicate.
We track everything from Web Vitals to Lighthouse scores and page weight. We also provide debug data for each metric to help you improve it.
Want to optimize the Largest Contentful Paint? No problem! We'll show you the responsible DOM element and what network requests you need to speed up.
What requests are render-blocking? Are any resources preloaded? Does the LCP image use the fetchpriority attribute? How is bandwidth allocated across requests?
Our waterfall chart shows all of this information and puts it into context.
Wondering why your LCP went up? Simply click on the regression in the chart to see what changed between the two test results.
Configure custom alert thresholds and make sure your pages stay in budget.
Send alerts by email, in Slack, or in Microsoft Teams.
Trigger page tests with the API and save test results to your own infrastructure.
Catch regressions early by testing every pull request an CI.
Download metrics as CSV or JSON.