Monitor Site Speed and Core Web Vitals
Optimize search engine rankings, conversion rates, and user experience.
Be faster than your competition
Modern user experience metrics
Track user-centric performance metrics like Largest Contentful Paint and Cumulative Layout Shift.
Monitor Lighthouse scores
Lighthouse is the tool that powers Google's PageSpeed Insights service. Track scores for performance, accessibility, and SEO.
Benchmark against the competition
Compare trends across different websites, and optimize your site performance.
Monitor Core Web Vitals
Improve Google rankings
Google is now using web vitals as a ranking factor. Optimizing site experience is an important part of technical SEO.
Lab and real user metrics
In addition to the lab-based Lighthouse tests, DebugBear also tracks the data Google collects from real Chrome users.
Increase developer productivity
Reporting that goes beyond metrics
Your page load times just went up, but why? DebugBear shows an in-depth comparison between any two test results, so you can see what changed.
Efficiently debug front-end performance problems
Use detailed debug data on rendering, CPU tasks, and network requests to identify what's slowing down your site.
Easy to set up, but packed with features
Nothing to install
Just enter the URLs of the pages you want to monitor.
Share results with your team
Invite as many users as you need, or give everyone access with a shareable URL.
Configure device type and location
Monitor mobile and desktop performance with custom device and network speeds. Run tests from 10 global locations.
Advanced features
Access pages behind authentication or hide popups with a custom script.
Integrate with your workflow
Front-end monitoring alerts
Send alerts by email, in Slack, or in Microsoft Teams.
API and webhooks
Trigger page tests with the API and save test results to your own infrastructure.
Integrate with GitHub, Vercel, and Netlify
Catch regressions early by testing every pull request an CI.
Export monitoring data
Download metrics as CSV or JSON.
Catch and fix regressions
Automatic change notifications
Added a new render-blocking script? Uploaded a 5 MB image? Got a slow server response? All of these can trigger an alert.
Use our zero-config automatic alerts, or set custom thresholds.
Compare test results
Wondering why your site got slower? Use an in-depth before and after comparison to see exactly what changed.