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. 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.

    131 votes
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      started  ·  6 comments  ·  Flag idea as inappropriate…  ·  Admin →
    • I need a better insight into appcache and offline storage

      It would be good to have a detailed database style display for offline storage (indexedDB, localStorage) and a detailed view on appcache content. It would also help to be able to disable appcache on the developer machine and enable it later without having to continuously change the manifest file

      76 votes
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        5 comments  ·  Flag idea as inappropriate…  ·  Admin →
      • Log ajax request / response in the Web Console

        Firebug has a nice console representation of both sides of an AJAX request, including activity indicators when the requst is still pending.

        related bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1004535

        76 votes
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          0 comments  ·  Flag idea as inappropriate…  ·  Admin →
        • Allow for the creation of dev tools plugins

          As far as I am aware, one cannot customise the devtools functionality. It would be nice if this ability was made available (as it is for firebug and Chrome developer tools).

          9 votes
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            1 comment  ·  Flag idea as inappropriate…  ·  Admin →
          • Connect Firefox Developer Tools to [Insert Browser Here] OR some better way to cross-browser debug

            I think our tools need to go where the web is, and that's not always in Firefox on a desktop. I want to be able to connect the Devtools to an iOS Webview, and Android Webview, Chrome for Android, Firefox for Android.. you get the picture.

            110% aware this is a non-trivial headache of a goal, but hot damn would it be nice to have a one-stop solution.

            Alternative: Have an 'IE tab', a 'Webkit tab', that render that tab the way each engine would respectively.

            10 votes
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              1 comment  ·  Flag idea as inappropriate…  ·  Admin →
            • Remember the state of the "toggle split console" button

              Currently if you want to see the split console you have to click the button or press ESC every time you open the devtools, on every page, even on the same page after you closed devtools and opened them again. Please remember the state of the toggle globally, like in firebug.

              5 votes
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                2 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.

                62 votes
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                  started  ·  2 comments  ·  Flag idea as inappropriate…  ·  Admin →
                • 1 vote
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                    1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                  • I'd love to see a flame chart in the profiler.

                    The flame chart in Chrome is a very fast and easy way to find hot spots in your JavaScript. I'd love to see that make its way into Firefox; I bet you could do it even better.

                    1 vote
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                      0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                    • Allow switching between active frames in the console.

                      I understand that the cd() console statement is coming in 30. I can appreciate the flexibility of that, but it sounds way more cumbersome than just having a drop-down that allows me to switch between all the frames in my active tab.

                      6 votes
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                        started  ·  2 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

                        1 vote
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                          started  ·  1 comment  ·  Flag idea as inappropriate…  ·  Admin →
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