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  • MB 108 posts 397 karma points
    Dec 04, 2019 @ 03:35

    Umbraco-7 BackOffice - Extend TinyMCE options

    I want to tweak the RTE image plugin to add the TinyMCE option of offering the user a 'Caption' field when they insert an image, which then turns it into a figure/figcaption block.

    The standard way of doing this it to subscribe to the tinymceinit event and specify a imagecaption="true" parameter, but I don't know how to apply this via the tinyMceConfig.config file, or what the RTE instance is to attack if from a backoffice customisation js file.

    Any/all input appreciated.

  • Alex Skrypnyk ( 6064 posts 23316 karma points MVP 6x admin c-trib
    Dec 16, 2019 @ 00:07
    Alex Skrypnyk (

    Hi MB

    Can you share with our community if you have any success with this task?


  • MB 108 posts 397 karma points
    Dec 16, 2019 @ 00:34

    I wasted a bit of time on this and decided it wasn't possible from the Umbraco configuration and/or backoffice API alone.

    I think that the correct solution is here:

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