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by Robert Boedigheimer

Learn how to use the popular Fiddler freeware web tracing tool.

What you'll learn

Telerik's Fiddler is a very popular tracing tool for web traffic. It is very powerful but still extremely easy to use. Fiddler an invaluable tool for all web developers to review how a web site works, troubleshoot problems, and do performance evaluations. It is highly extensible using FiddlerScript or by creating .NET extensions. The customizations include additions to the Fiddler UI as well as automatically adjusting traffic before it is sent to the web server or before the response is sent to the client. The features can also be embedded into your own .NET application via FiddlerCore. The FiddlerCap utility provides an easy way for users or customers to capture web traces to identify problems. It is not limited to just Windows, as it can also be configured to capture traces for smartphones, tablets, and non-Windows platforms.

Course FAQ

What is Fiddler used for?

Telerik's Fiddler is a popular tracing tool for web traffic, allowing you to inspect incoming and outgoing traffic data and decide how to manage requests and responses before the browser receives them. It is a web debugging tool for logging HTTP/HTTPS traffic.

Is Fiddler a Freeware?

Yes! Fiddler is a free web debugging proxy for any browser, system or platform.

What will I learn in this course?

This course will teach you how to use Fiddler, covering topics such as:

  • What is Fiddler and why use it?
  • How does Fiddler work?
  • Common tasks Fiddler can help with
  • Troubleshooting problems with Fiddler
  • Overview of Fiddler capabilities
  • Common mistakes
  • Advanced Fiddler concepts and practices
  • Much more
Who should take this course?

Anyone who wants to learn how to use a powerful and easy to use debugging proxy server tool should take this Fiddler course.

Are there prerequisites to this course?

There are no strict prerequisites for this course, however, the material is more intermediate to advanced, so don't expect too much hand-holding throughout.

About the author

Robert has been developing web sites for the past 23 years. He is a Microsoft MVP, a Progress Developer Expert (Fiddler), a Pluralsight author, and a 3rd degree black belt in Tae Kwon Do. Robert regularly speaks at national and international events.

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