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Jan 10, 2026 · Fiddler’s web site has complete documentation on the program that includes Power Point presentations and instructional videos if you want to learn how to use it …

Install Fiddler Fiddler is available for Windows XP and later. Fiddler v2.x runs on the .NET Framework v2.0 while v4.x requires .NET4.0.

If you've arrived here wanting to search and peruse our docs, you'd be better served heading over to www.fiddler2.com/docs where our content is prettified and searchable.

Fiddler Beginner Guide 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 …

Introducing Fiddler What is Fiddler? Fiddler is a Web Debugging Proxy which logs all HTTP (S) traffic between your computer and the Internet. Fiddler allows you to inspect traffic, set breakpoints, and …

Explore Fiddler's web debugging tools and proxy solutions to debug, mock, capture, and modify web and network traffic.

To your web browser, Fiddler2 claims to be the secure web server, and to the web server, Fiddler2 mimics the web browser. In order to pretend to be the web server, Fiddler2 dynamically generates a …

Learn more about decrypting HTTPS traffic with Fiddler2. Q: How do I attach a client certificate? A: Fiddler 2.1.0.3 and later support client certificates. See A ttaching Client Certificates for more …

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