Online HTTP Cache Checker

This tool shows how web browsers will cache a URL. HTTP caching reuses previously loaded resources and can greatly impact performance. Learn more about HTTP Caching.

Test Your HTTP Cache Headers

Enter the URL of a webpage, image, script, font, or any other file to see the relevant caching headers returned from the server or CDN.

Enter a URL to get started!

Client-Side Monitoring, but easier.

Start Free Schedule Demo
Sloth riding the rocket.
Request Metrics is application monitoring for the front-end. Understand your real users, and how they experience your application. Fix the bugs and problems that get in the way of your users. Respond to outages and attacks quickly with Request Metrics. Get visibility into your web app in minutes instead of months.