Monitor and understand your front-end code

Identify performance regressions and compare previous page versions.

➔ Try demo

Performance Monitoring

Keep track of the size of your JS bundle and other assets.

  • File-specific change details
  • Monitor pages that require login
  • CPU and memory consumption

See exactly what changed

View the full request list and compare it to the previous day.

  • View and diff past file versions
  • Show added and removed assets
  • Get notified of size changes and new JS warnings

Access previous versions

Wondering when a bug was introduced or how a feature used to work before?

Just load a fully interactive archive of the old page in your browser.

Every day DebugBear loads your page and archives all requests with their responses. You can then replay those requests and load the old page without making any real network requests.

Get started

Free 30 day trial