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”
Tag Archives: debugging
Debugging Chromium
A customer recently complained that after changing the Windows Security Zone Zone configuration to Disable launching apps and unsafe files: … trying to right-click and “Save As” on a Text file loaded in Chrome fails in a weird way. Specifically, Chrome’s download manager claims it saved the file (with an incorrect “size” that’s actually theContinue reading “Debugging Chromium”
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”
Debugging Compatibility in Edge
Background By moving from our old codebase to Chromium, the Microsoft Edge team significantly modernized our codebase and improved our compatibility with websites. As we now share the vast majority of our web platform code with the market-leading browser, it’s rare to find websites that behave differently in Edge when compared to Chrome, Brave, Opera,Continue reading “Debugging Compatibility in Edge”
View-Source
Chromium offers two ways for an end-user to view the source code of a web page: 1) the Developer Tools, and 2) The longstanding view-source viewer. Of these, the Developer Tools have received almost all of the attention over the last decade, but in this post I want to take a quick look at theContinue reading “View-Source”
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