Frontend Native JavaScript Monitoring
How it works
TrackJS is a frontend native error monitoring tool: private by default, zero page impact, and compatible with every browser and framework. Track errors from code bugs, network failures, and third-party scripts across your real users.
Works everywhere you need it
From modern NextJS to old Internet Explorer, TrackJS has your back.
Better JavaScript in 3 easy steps
1. Add the TrackJS agent
Copy the code into your html or bundle it from npm. The agent is only 8 kilobytes, has no dependencies, and runs without slowing down your pages or recording sensitive user data.
2. Deploy your site
Now that the agent is part of your site, TrackJS automatically monitors errors from your real users in your production environment. Unhandled errors, rejected promises, failing network calls, and console errors are all captured by the agent automatically.
3. Create filters and alerts
Everyone's site has JavaScript errors, but not all of them matter. TrackJS gives you powerful filtering tools to focus on the errors that affect your most important users.
First, do no harm
Our top priority is to never break your site or slow down your users.
Private by default
The agent captures only what's needed to reproduce and fix errors. No cookies, no identifiable user profiles, no session recordings.
No impact
The TrackJS agent runs in a background buffer with no changes to page behavior. Your pages perform exactly the same with or without monitoring.
Non-blocking
Error data is delivered asynchronously so it never interrupts your users. If our servers are unavailable, your site keeps running without any impact.