Goodness of Fiddler, built from scratch to work everywhere
Download for free to get started
Telerik Fiddler web debugging proxy helps you record, inspect and debug traffic from any browser.
Debug web traffic from any Windows-based PC, Mac or Linux system and mobile devices alike.
Use Telerik Fiddler with any platform and language. Now supporting .NET Standard 2.0.
The web debugging proxy for any browser, system or platform. Fiddler is a web debugging tool which logs all HTTP(S) traffic between your computer and the internet. Inspect traffic, set breakpoints, and fiddle with incoming and outgoing data.
Use Fiddler to log all HTTP(S) traffic between your computer and the internet. Debug traffic from virtually any application that supports a proxy – chrome, Safari, Firefox, Opera and more.
Mock or Modify request and responses on any website. It’s a quick and easy way to change the request and responses to test websites without changes in the code.
User Fiddler API Composer to quickly test APIs by creating and sending requests. Useful while developing new APIs or when testing existing APIs.
Capture live traffic between your computer and internet or export it to popular formats. The captured traffic can be used to debug issues, find performance bottlenecks or share it with your teammates.
Fiddler Everywhere is completely built from ground up, we have completely revamped the entire user experience to make your tasks simple and more intuitive.
The Improved API composer makes it easy to quickly compose and test any API requests, we have also made it easy to group and organize the requests.
AutoResponder gets a major update which makes it easy to create and organize AutoResponder rules into groups.
Now collaboration is made easy in Fiddler. You no longer have to manually export the session or send the captured traffic through email, You can use Fiddler Everywhere to save the captured traffic, add comments and share it with your colleagues all without switching context from within Fiddler Everywhere.