Charles is an HTTP proxy / HTTP monitor / Reverse Proxy that enables a developer to view all of the HTTP and SSL / HTTPS traffic between their machine and the Internet.

Mozilla Firefox add-on Firefox no longer requires an add-on to work with Charles. Instead configure Firefox to use your system proxy settings.

The best way to learn how to use Charles and to learn how it can help you is just to install it and see how it works. If you haven’t already please read the installation guide.

Charles is a web proxy (HTTP Proxy / HTTP Monitor) that runs on your own computer. Your web browser (or any other Internet application) is then configured to access the Internet through Charles, …

Charles is intended to be a dive-in piece of software. Start it up, it will attempt to automatically configure your browser so you’re up and running immediately.

Charles has APT and YUM repositories, which are the preferred ways to install Charles if you have Debian-based or Red Hat-based Linux distributions. Otherwise, unzip the tar.gz archive in an …

Charles is developed by XK72. All content is copyright 2026. Site design by Matthew Buchanan.

Charles is useful for XML development in web browsers, such as AJAX (Asynchronous Javascript and XML) and XMLHTTP, as it enables you to see the actual XML that is flowing between the client and …

When you first install Charles you will be prompted to grant permissions to Charles to autoconfigure the proxy settings. After that, Charles will configure and then reconfigure the macOS proxy settings …

A user license permits you to use Charles on one computers. A site license of Charles permits you (and members of your organisation) to use Charles on any computer at one site (or at multiple sites with a …