Firefox Developer Tools ideas

Welcome to the feedback channel for Firefox Developer Tools. This is a place for constructive feedback around the tools with ideas and feature suggestions. It is not a support forum or place to report bugs. For support, please go to the #devtools channel on Mozilla IRC or the firefox-developer-tools tag on Stack Overflow, and for reporting bugs, go to Bugzilla.

The documentation on how the Developer Tools work is available on MDN.

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  1. Can you please add user agent switcher in tool?

    Add device, screen size and user agent in under user switcher control.

    230 votes
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      4 comments  ·  Flag idea as inappropriate…  ·  Admin →
    • easier cookie deletion

      Deleting a cookie right now is quite cumbersome. You have to bring up the developer toolbar, then use the cookie list + cookie delete commands.

      It would be a lot easier if the cookies could be deleted directly from the tools. e.g in the network tab, where cookies are listed.

      172 votes
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        7 comments  ·  Flag idea as inappropriate…  ·  Admin →
      • Inspect websocket connections

        It will very useful for who works with websockets inspect the traffic and connections.

        303 votes
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          11 comments  ·  Flag idea as inappropriate…  ·  Admin →
        • Track Style Changes

          Show a list of all CSS changes done through the Tools so they can be easily integrated to the developers tool.

          4 votes
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            started  ·  0 comments  ·  Flag idea as inappropriate…  ·  Admin →
          • Memory monitoring

            I want to be able to monitor memory usage in my mobile web app. I want my mobile ap to use as little memory as possible.

            257 votes
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              started  ·  14 comments  ·  Flag idea as inappropriate…  ·  Admin →
            • Worker debugging for Web/Shared/Service Workers

              The ability to be able to connect and debug JavaScript workers has been missing for some time, but with the advent of Shared- and ServiceWorkers is getting even more of a sore point.

              8 votes
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                0 comments  ·  Flag idea as inappropriate…  ·  Admin →
              • Allow user to search in the HTML pane

                Right now you can only search in the HTML pane by using IDs and classes. This makes searching for something without a class or ID a huge pain in the butt. You have to search the source code, then search for a class or id near that to get anywhere. This feature is in firebug and chrome dev tools. :(

                1 vote
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                  started  ·  0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                • CSS Animation Editor

                  CSS frame-by-frame animation editor. I believe someone on devtools started this project (might have been Paul Rouget?) and I would love to see it resurrected.

                  173 votes
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                    started  ·  8 comments  ·  Flag idea as inappropriate…  ·  Admin →
                  • Add "Expand / Collapse All" to markup view

                    This is handy in the case that you want to see all of the nodes in your page.

                    related bug: https://bugzilla.mozilla.org/show_bug.cgi?id=895887

                    3 votes
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                      started  ·  3 comments  ·  Flag idea as inappropriate…  ·  Admin →
                    • Show json as structured data (just like xml files), allow code folding

                      json is the new xml, firefox was convenient for development in the past because it rendered xml as structured data instead of just plain text which is convenient when you work with web services. Today, web services use json not xml, yet we render json as plain text. Pleas implement what the JsonView extension does! https://addons.mozilla.org/fr/firefox/addon/jsonview/

                      25 votes
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                        1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                      • Display JIT information in Debugger and Profiler

                        JIT bailouts and invalidation can be expensive, especially in games. Having insights into which parts of your code could not be jitted and why can help to optimize hot loops.

                        Showing marks in the Profiler when JIT invalidation happens can give valuable insights for otherwise unexplainable janking.

                        24 votes
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                          0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                        • Use WebIDE as an IDE for Cordova / PhoneGap

                          WebIDE is restricted to being used just for Firefox OS apps. However, it has so much more potential, and it would be nice if it could be used for Cordova apps.

                          18 votes
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                            2 comments  ·  Flag idea as inappropriate…  ·  Admin →

                            This is already planned and is being worked on as we speak. Thanks for the validation, we think this will a great addition to the WebIDE’s capabilities! But please keep voting for this if you like it.

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