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I have created a file type custom field and discovered that you can upload any type of file on the field so I want to restrict the custom field to only upload image files. Is it possible?

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You can use validateForm in an extension to restrict it.

You can also vote for this ticket: https://lab.civicrm.org/dev/core/-/issues/2410

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  • Although it didn't directly fix my problem but this helped me get the idea how to fix it.. thanks Mar 9, 2021 at 4:26

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