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.

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).

Welcome to the GitHub repo for Fiddler Documentation. This repository contains the source content--written in Markdown--that we use to power the Fiddler Classic Documentation at …

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, …

A fiddle is a bowed string musical instrument, most often a violin or a bass. [1] Fiddle is a colloquial term for the violin, used by players in all genres, including classical music. Although …

Download and install Fiddler Classic web debugging tool. Watch a quick tutorial to get started.

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.

Fiddler Web Debugger is a serviceable web debugging proxy for logging all HTTP (S) traffic linking your computer to the internet, allowing for traffic inspection, breakpoint setting, and more.

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 …