Debug traffic from PC, Mac or Linux systems and mobile devices. Ensure the proper cookies, headers and cache directives are transferred between the client and server. Supports any framework, including .NET, Java, Ruby, etc.
Fiddler is a free web debugging proxy which logs all HTTP(s) traffic between your computer and the Internet. Use it to debug traffic from virtually any application that supports a proxy like IE, Chrome, Safari, Firefox, Opera and more.
Web pages are failing to connect, getting errors, or intermittent disruptions.
If HTTPS decryption is required:
Fiddler can decrypt HTTPS sessions by re-signing traffic using self-generated certificates.
Go to Menu > Tools > Fiddler options
Select HTTPS tab
Enable "Capture HTTPS CONNECTs and Decrypt HTTPS traffic" IMPORTANT: Trust the FiddlerRoot certificate TEMPORARY only for testing. DO_NOT_TRUST_FiddlerRoot certificate permanently.