Fiddler is a web debugging proxy tool for Windows, macOS and Linux. It has evolved from Fiddler Classic into a more robust and versatile product - Fiddler Everywhere.

May 14, 2025 · Fiddler, free download for Windows. Tool that intercepts and analyzes HTTP and HTTPS traffic to help diagnose and debug web application issues.

Your Fiddler Everywhere app should open automatically. If that doesn't work, click here. Don’t have Fiddler Everywhere?

Aug 28, 2025 · Describes how to set up Fiddler to capture secure HTTP addresses and monitor web traffic when troubleshooting Power Query communications issues.

Dec 3, 2024 · Find out how to use Fiddler to inspect/analyze various parts of HTTP Web Requests and Web Response (Such as HTTP Headers, Query String, POST Body).

Want to have Fiddler automatically rewrite requests and responses, add or remove headers, or flag/ignore sessions based on rules you specify? Check out the FiddlerScript Cookbook.

Install and configure Fiddler Everywhere on Windows and learn how to capture, inspect, and modify the HTTPS traffic to analyze data effectively. This tutorial describes how to install and start using Fiddler …

Fiddler is a web debugging tool that allows you to monitor and modify HTTP and HTTPS traffic between your computer and the internet. It’s an invaluable tool for developers, QA engineers, and anyone …

Fiddler is a debugging proxy server tool used to log, inspect, and alter HTTP and HTTPS traffic between a computer and a web server or servers. Fiddler was originally written by Eric Lawrence while a …

Jun 5, 2019 · Fiddler is a free Web Debugging Proxy which logs all HTTP (S) traffic between your computer and the Internet.