Discover issues happening to your customers

Track JavaScript Errors

Monitor JavaScript errors in your web applications. Get details needed to fix bugs quickly.

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Console Error Logo

Easy to use and privacy friendly

Not bloated, clean and simple to use

Discover issues
happening to your customers

Graphs

Visualize events happening in your web application. See how many errors you have, how often they occur, and how they affect your users.

Detailed Reports

Get detailed information about each error, including stack traces, affected users, and more. Dive deep into the data to understand the root cause of the problem.

Why choose FailWarn?

Your satisfaction is our priority

We take every feedback seriously and are always here to help. Contact us anytime, and we will do our best to assist you.

We value privacy and security

Your data is safe with us. We use the latest security practices to protect your information and ensure your privacy.

Hassle-free integration

Simply add one script tag. Our bundle is lightweight and won’t slow down your app. Get started in minutes.

No tricks, no hidden fees

Just choose a plan that suits your needs, and you are ready to go. No hidden fees, no extra charges, no surprises.

A Brand You Can Trust

" First-class customer support. We are very happy with the service. "


Tom

Developer

" Helped us to identify and fix bugs. Now, it is an essential part of our process. "


Anna

CTO, ObsLabs

" Monitor exceptions, improve our observability. "


David

Software Engineer

No-code integrations

We support the most popular platforms and tools. Connect FailWarn with your favorite apps.

Zapier.com
Make.com
N8n.io

Start monitoring your JavaScript errors today

Get started in minutes. No credit card required.

Guides, Product Updates, and Helpful Tips

JavaScript Async Await Guide (2025)

JavaScript Async Await Guide (2025)

Understand JavaScript's async/await pattern to write cleaner asynchronous code. Learn the syntax, best practices, error handling, and real-world implementation examples for modern web development.

How to fix: SecurityError: Blocked by CORS Policy

How to fix: SecurityError: Blocked by CORS Policy

Cross Origin Resource Sharing error typically arises when a web application attempts to make a request to a different domain than the one that served the web page, violating the browser's Same-Origin Policy.