Know when your web app is breaking

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

Free to try

JavaScript Error Logging Like It's 2018

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

(Extremely lightweight: Only 1.78KB gzipped.)

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.

Do this:
catchjs.log("Unexpected parameter: ", obj);
Get this:

It's not just for errors. The catchjs.log() API gives you a persistent remote log. This lets you log objects and text from your users' device, so you can inspect the data later.

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

Features that make debugging a breeze

Email notifications

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

Screenshots

See the users' 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

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
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