How do I capture the HTTP log on a Mac using Fiddler?

How do I set up Fiddler to capture logs on a Mac?

To capture HTTP logs on Mac using Fiddler:

1. Download Fiddler for Mac at https://www.telerik.com/download/fiddler-everywhere
2. Drag the Progress Telerik Fiddler DMG file to the Applications folder.
3. Open the Progress Telerik Fiddler app from the Applications folder, then authenticate either using your Touch ID, or your password.

Older Releases. All present and past releases can be found in our download area. Installation Notes. For a complete list of system requirements and supported platforms, please consult the User's Guide. Information about each release can be found in the release notes. Each Windows package comes with the latest stable release of Npcap, which is required for live packet capture. Fiddler for Mac OS X: Best alternatives Check out alternatives to Fiddler for Mac proposed by our editors and user community. Charles Free. Charles is an HTTP proxy that enables a developer to view all of the HTTP and SSL or HTTPS traffic between their machine and the Internet. This includes requests, responses. Nov 08, 2018.

• Note: Authentication is required as Fiddler is installed as a proxy server on your Mac, and it makes changes to the proxy settings. The changes to the proxy settings revert once you close the Fiddle application.

4. Go to Settings > HTTPS, then enable Decrypt HTTPS traffic.
5. Go to your desktop, then click on FiddlerRootCertificate.crt.
6. In Keychain Access, click on DO_NOT_TRUST_FiddlerRoot certificate to open the Trust dialog
7. Choose Always Trust in the When using this certiciate drop-down menu.
8. Restart the Fiddler app and ensure there is a Capturing...button at the bottom left of the window.
9. Replicate the issue, then go to File > Save archive > All sessions to save the log file.

Fiddler, from Telerik, is a web debugging proxy that tracks HTTP, and HTTPS traffic from your computer, and the Internet. It is a free tool and boasts features such as performance testing, web session manipulation, and security testing.

A great free solution

Fiddler has an option for performance testing built-in. The beauty of this feature is that it lets you see the ‘total page weight’.

Fiddler is a powerful, and customizable tool for web developers. You can choose to use many languages. Using FiddlerScript and powerful extensions can be done with any .NET language.

The web session manipulation tool is useful to developers. This feature allows you to pause session processing as you like, and make any amendments. You can even come up with your own HTTP requests, and test them through the software.

Moving on to security testing, Fiddler has this covered too. You can decrypt HTTPS traffic using a technique known as ‘man in the middle’. This means you can decrypt everything if you need to, or focus on a specific session.

Another feature of Fiddler is the traffic recorder. It enables you to see and review all traffic moving between your computer and the Internet. If your application supports proxy, this will always work for you. The program is as diverse as you will ever need it to be.

Where can you run this program?

Available for Windows as a download from the developer website. There are also beta versions available for Mac OS, and Linux.

Is there a better alternative?

No, there isn’t a better alternative to Fiddler. Wireshark and Firebug are potential alternatives. These two do not compare when it comes to functionality and usability.

Our take

If you are a professional web developer or an amateur, this software has everything you need. It covers you for testing, security, and analysis. You will be lucky to find a better free alternative to Fiddler.

Should you download it?

Fiddler Download For Windows

Yes, you should download it. The support is expensive, but the program itself is free. It comes with a wash of online help from other users. Don’t miss out on this one. It has everything you need, and more.