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.

Oct 14, 2025 · Fiddler is a powerful free web debugging proxy that allows you to inspect all HTTP (S) traffic between your computer and the internet; essentially, it’s a tool for seeing exactly what’s going …

Feb 8, 2022 · The Fiddler tool helps you debug web applications by capturing network traffic between the Internet and test computers. The tool enables you to inspect incoming and outgoing data to …

Feb 21, 2026 · Fiddler Everywhere is a versatile web debugging proxy designed for capturing, inspecting, and debugging HTTP/HTTPS network traffic across multiple platforms, including …

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

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 …

Summary: This article contains step-by-step instructions on how to install and configure the Fiddler tool. The Fiddler tool helps you debug web applications by capturing network traffic between the Internet …

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.

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

Fiddler’s advanced analysis tools enable users to inspect headers, payloads, and timing information for individual requests, facilitating in-depth troubleshooting and performance optimization.