Website monitoring for developers

Track front-end performance and quality metrics for your production site and in CI.

Compare results and see what caused the problem.
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Front-end web performance monitoring dashboard
”DebugBear has a bug-free simple UX. I was able to set it up for our team in less than an hour, and everyone is using it now.
George M.

Keep your website fast

User-centric performance metrics

Track metrics like First Contentful Paint, Largest Contentful Paint, and Time to Interactive. Or set up user timing metrics tailored to your website.

Monitor Lighthouse scores

Track the scores provided by Google's Lighthouse tool for performance, accessibility, best practices, and SEO. Lighthouse is what runs PageSpeed Insights behind the scenes.

Bundle size monitoring

See how the size of each bundle changed over time, and compare the minified JavaScript code to see what changed.

Lighthouse monitoring tab
Per-file size history chart

Take action

Performance recommendations

Improvement opportunities tailored to your website. View a full Lighthouse quality report for each analysis.

Compare page weight at a per-file level

Wondering what part of your code just got larger? DebugBear will tell you exactly what file changed and let you compare both versions. This works even if there's a changing hash in the file name.

Access past page versions

Trying to figure out when a bug was introduced or how a feature used to work before? Load a fully interactive archive of the old page version in your browser.

How it works

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 like, so everyone has access to performance data. Or share give everyone access with a shareable URL.

Configure device type and location

Monitor mobile and desktop performance, in the region where your users are.

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.

resource size history chart
web performance email alert

Intelligent 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.

Detailed change information

See exactly what file, metric, or Lighthouse audit changed – and why!

Get alerts by email or in Slack

Set up alerts in the way that's most convenient to you.

API and Continuous Integration

Run tests with the API

Use the command line interface or API to analyze each build and catch regressions early. Deploy to a staging server or use ngrok to allow access to your CI environment.

Automate setup and export monitoring results

Programmatically configure what pages to monitor and download monititoring metrics as CSV or JSON.

Github integration

Report build results Github as part of your pull requests.

resource size history chart
”I was making a video recording to showcase how screen readers worked on our site a few months ago vs now. The archive feature was such a massive time saver!
Peter M.

Get set up in minutes.

No changes to your website necessary.
Start free 14-day trial
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