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Fiddler in 2025

The Fiddler Web Debugger is now old enough to drink, but I still use it pretty much every day. Fiddler hasn’t aged entirely gracefully as platforms and standards have changed over the decades, but the tool is extensible enough that some of the shortcomings can be fixed by extensions and configuration changes. Last year, IContinue reading “Fiddler in 2025”

Fiddler Web Debugger Turns 20

Twenty years ago (!!?!) was the first official release of Fiddler. I still run Fiddler for some task or another almost every working day. I still run my version (Fiddler Classic) although some of the newer tools in the Fiddler Universe are compelling for non-Windows platforms. I presented some slides in a birthday celebration thatContinue reading “Fiddler Web Debugger Turns 20”

Capturing Logs for Debugging SmartScreen

The Microsoft Edge browser makes use of a service called Microsoft Defender SmartScreen to help protect users from phishing websites and malicious downloads. The SmartScreen service integrates with a Microsoft threat intelligence service running in the cloud to quickly block discovered threats. As I explained last year, the SmartScreen service also helps reduce spurious securityContinue reading “Capturing Logs for Debugging SmartScreen”

Edge’s Super-Res Image Enhancement

One interesting feature that the Edge team is experimenting with this summer is called “SuperRes” or “Enhance Images.” This feature allows Microsoft Edge to use a Microsoft-built AI/ML service to enhance the quality of images shown within the browser. You can learn more about how the images are enhanced (and see some examples) in theContinue reading “Edge’s Super-Res Image Enhancement”

Extending Fiddler’s ImageView

Fiddler’s ImageView Inspector offers a lot of powerful functionality for inspecting images and discovering ways to shrink an image’s byte-weight without impacting its quality. Less well-known is the fact that the ImageView Inspector is very extensible, such that you can add new tools to it very simply. To do so, simply download any required executablesContinue reading “Extending Fiddler’s ImageView”