Build fast websites that delight your customers
Monitor website performance
Be faster than your competition
Monitor Web Vitals
Track user-centric performance metrics like Largest Contentful Paint and Cumulative Layout Shift.
Track custom site speed metrics
Use the User Timing API to monitor custom metrics tailored to your website.
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 the optimize performance of your site.
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, allowing you to see what changed.
Detailed data on rendering, CPU tasks, and requests
Identify what's holding back rendering or making your page unresponsive. Efficiently debug front-end performance problems.
Monitor JavaScript bundles
Loading and running modern JavaScript apps can negatively impact performance. DebugBear tracks the size of your JavaScript bundles over time and shows you which file got bigger and why.
Easy to set up, but packed with features
Nothing to install
Just enter the URLs of the pages you want to monitor and we'll do the rest.
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. Disable GDPR notices with custom scripts. Block third-party requests to monitor just your own code. Set performance budgets to keep your site fast.
Catch regressions with zero-config alerts
Automatic change notifications
Did you JavaScript bundle get bigger? Got a slow server response? Added a new image without an alt tag? Using a deprecated API? All of these can trigger an alert.
Get alerts by email or in Slack
See front-end monitoring results where it's convenient to you.
Zero-config, but configurable
Significant changes are detected automatically, without the need to set up thresholds. But if you need to you can fully customize the alerts.
Integrate with your workflow
API access
Use the API to run tests or configure your monitoring setup.
Continuous Integration and GitHub App
Catch regressions early by testing each pull request with DebugBear. Report results to GitHub, a Slack channel, or your custom setup.
Export monitoring results
Download metrics as CSV or JSON, or export data with the API.
