JavaScript Error Monitoring & Reporting

Try Bugsnag's JavaScript error monitoring & reporting

Automatically detect JavaScript errors on your website, and get detailed diagnostic reports and real-time error notifications.

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Effortless JavaScript error detection

Debug JavaScript errors more efficiently. Add one line of code to your website and focus on the issues that matter most to you and your users.

One line integration

Add a single script tag to your website or install via npm. It takes less than a minute to integrate and you'll immediately begin monitoring and reporting JavaScript errors.

Automatically detect script errors

Detect each time a user experiences an error. There’s absolutely no need to change your code or add try/catch blocks.

Notify your team instantly

Bugsnag works with your existing developer tools. Keep a close watch on your JS app from places like Slack and Gitter, or with email and SMS notifications. Automatically create tickets in JIRA, GitHub Issues, Pivotal Tracker, and more when a new error is found.

Support for JavaScript frameworks

Bugsnag supports JS frameworks React, Vue, and Angular with error reporting libraries that hook into your frameworks' error handler and report framework specific diagnostics.

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Cross-browser error detection

Ship new code with the confidence that you'll be able to quickly respond whenever JavaScript errors happen, wherever they occur.

Cross-browser error grouping

From old IE to modern Chrome, monitor your JS errors everywhere. See your errors from modern browsers grouped together flawlessly, even if you use minification and cache-busting techniques.

Browser and OS Breakdowns

See the breakdown of the browsers and operating systems in which errors occurred. You’ll be able to quickly identify if an error is limited to a single browser, or a class of browsers.

Prioritize your JavaScript errors

With error sorting, filtering, and trend analysis, keep your team focused on the issues that matter most.

Error inbox shows sorted error by events.

Avoid the noise

Multi-dimensional filters for browser, OS, user, and more help you hone in on relevant errors. Easily filter to find specific errors you're looking for and clear away noise from your view.

Identify impactful errors at a glance

Sort errors by event count and users impacted to find the ones that occur most frequently or affect a widespread section of your users. This can help you prioritize errors that need fixing.

Benchmark releases to improve application health

Use the Releases dashboard to decide if a release is successful or needs to be rolled back. The crash rate indicator shows the percentage of sessions in a release that end in a crash, allowing you to compare release health and track improvements over time.

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Automatic diagnostic collection

With access to powerful diagnostics, get to the root cause of errors quickly and fix frustrating bugs.

Stacktrace and source maps support

See the code that caused the error, even if your code is minified. If you’re using source maps we’ll show you the exact line that caused the crash.

Automatically collected breadcrumbs

Efficiently reproduce errors with a timeline of user and system events leading up to each error, like clicks, console logs and errors, page load, and more.

Production ready JavaScript error detection

Resilient JavaScript error monitoring that's used on some of the world's biggest sites. We'll be here when you need us most.

Lightweight library

Weighing in at less than 10KB, our JavaScript code adds no noticeable overhead to your page loads. The library is hosted on Amazon’s Cloudfront CDN with edge locations around the world — or you can host it on your own servers.