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Try Bugsnag's JavaScript error 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.
Install Javascript error reporting library
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, HipChat, 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.
Bugsnag integrates with team chat and issue trackers
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.
Cross-browser error grouping for JavaScript errors
Error diagnostic data summaries
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.
Filter out 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.
JavaScript errors grouped by root cause
JavaScript error trend graph
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.
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.
JavaScript stack trace
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.
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Enterprise level security
Send errors to our servers using 256-bit SSL, the same encryption used by the world’s leading banks.
Developer centric support
Hands on support from our development team to ensure your integration goes smoothly

Over 4,500 of the world's best engineering teams use Bugsnag to build better software

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“Bugsnag helps Lyft focus on new features and provide a better experience for our users.”
Billy Pham
Lyft, Technical Program Manager
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