Know when your web app is breaking

  • Log errors from your users' browsers
  • Reproduce bugs via click trails and screenshots
  • Inspect application state, after the fact
  • Deploy by linking a single .js file

Free to try

JavaScript Error Logging for Developers

Add this:
<script src="//cdn.catchjs.com/catch.js"></script>
Get this:

CatchJS automatically collects all uncaught exceptions from your users' browsers, and presents a detailed log of their circumstances. This includes the browser type, the stack trace, and even screenshots and the click trail which lead to the error.

Works out of the box with any framework
React, Angular, Vue.js, JQuery, Aurelia and Backbone.js are all supported out the box

Error tracking without the bloat

Create delightfully fast websites. Don't let error tracking slow things down. The CatchJS library is up to 8 times smaller than our competitors, only 1.76kB gzipped.

CatchJS vs competitors (lower is better)

See exactly where the error happened

Get the full error context, and see exactly what went wrong. Source maps will be collected and applied automatically, with no action needed from you.

It's not just for errors

Track and log whatever data you'd like, using the catchjs.log() function. It is like the developer console, but logging remotely from your users' device. In addition to error reporting, you get a dead simple way to monitor any event of interest.


Features that make debugging a breeze

Email notifications

Get alerts when new errors happen, along with weekly summaries.

Screenshots

See the user's screen as the error happened

Click trails

See what clicks lead to the error state.

Stack traces

See the stack trace of the error, and track down its root cause

Trends

Pinpoint when the error started happening with the error rate graph

Browser stats

See at a glance in which browsers the trouble is happening

Details

Find the exact circumstances behind each error with the details view

We're a lot cheaper than having a broken web app

There are no hidden costs and no surprises, just a flat monthly rate.

Development

$49
per month

  • Free 30 day trial
  • 1 000 logged errors per month
  • 1 000 log API calls per month
  • Email notifications
  • Screenshots
  • Click trails
  • Priority support
Start tracking errors

Production

$89
per month

  • Free 30 day trial
  • 100 000 logged errors per month
  • 100 000 log API calls per month
  • Email notifications
  • Screenshots
  • Click trails
  • Priority support
Start tracking errors
Popular

Enterprise

$499
per month

  • Free 30 day trial
  • 1 000 000 logged errors per month
  • 1 000 000 log API calls per month
  • Email notifications
  • Screenshots
  • Click trails
  • Priority support
Start tracking errors
Are you part of an open source software project? We have much gratitude to the open source software community, and therefore provide a free subscription to such projects. Click here to apply.