Monitor your front-end code

Get performance and error alerts. Access the data you need to understand and fix problems.

➔ Start Free Trial

Keep your website fast

Modern performance metrics

Track UX-focused metrics like First Meaningful Paint, Speed Index, and Time to Interactive.

Track CPU and memory consumption

See how client-side code execution impacts performance.

Detailed page weight analysis

Fully understand the download size of your page with a detailed request listing and archived response data.

Take action

Performance recommendations

Improvement opportunities tailored specifically to your website.

File-specific size monitoring

Wondering what part of your JS just got larger? DebugBear can track size changes even if the file hash changes over time.

Access past page versions

Wondering 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.

Daily monitoring and alerts

Every 24h DebugBear loads and analyzes your website. If there's been a big change we'll let you know.

Advanced features

Log into a monitored site using email and password. Inject custom scripts – for example to disable a GDPR notice. Block third-party requests to monitor just your own code.

Get set up in minutes. No changes to your website necessary.

Start free 30-day trial