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Home/ Questions/Q 7979003
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Editorial Team
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Editorial Team
Asked: June 4, 20262026-06-04T09:38:56+00:00 2026-06-04T09:38:56+00:00

I am new to Firefox development and am using the Add-on SDK. I would

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I am new to Firefox development and am using the Add-on SDK. I would like to know how to get the following user interface in an extension:

screenshot

Is this interface a panel? If not, what is it and how do I go about getting this interface in a Firefox addon?

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  1. Editorial Team
    Editorial Team
    2026-06-04T09:38:58+00:00Added an answer on June 4, 2026 at 9:38 am

    No, this isn’t a panel. Your screenshot shows a XUL-based dialog window which is why it looks like a native dialog.

    The Add-on SDK uses HTML for its needs however, creating a native-looking dialog is hard there. There is a fork of the Add-on SDK with XUL support but it is outdated and very experimental.

    The other option would be building a classic extension. It can simply have a XUL file for the dialog (using <dialog> as root tag) and call window.openDialog() at some point to show it.

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