Fiddler is a free Web Debugging Proxy which logs all HTTP(S) traffic between your computer and the Internet. Debug web traffic from any Windows PC, Mac or Linux system. You can also debug traffic from popular mobile devices like Android, iPhone/iPad. It supports virtually any web browser, including Internet Explorer, Edge, Google Chrome, Apple Safari, Mozilla Firefox, Opera, and more.

Fiddler Web Debugging Proxy for windows
Fiddler Web Debugging Proxy for windows

Web Session Manipulation

Set a breakpoint to pause the processing of the session and permit alteration of the request/response. Compose your own HTTP requests and run them through Fiddler.

Performance Testing

View total page weight, HTTP caching and compression at a glance. Isolate performance bottlenecks with customizable rules.

Customizable Free Tool

Extend possibilities with ready-made add-ons or third-party extensions.

Decrypt HTTPS traffic

Decrypt HTTPS traffic and display and modify web application requests using a man-in-the-middle decryption technique.

HTTP(S) Recording & Web Debugging

Log all HTTP(S) traffic between your computer and the Internet. Debug traffic from PC, Mac or Linux systems and mobile (iOS and Android) devices.


Download this free proxy program from its official website here.

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Charles Proxy: 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.

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