Which image file formats are supported by Mattermost? I haven’t tested a lot, but it seems that JPEG is ok, but HEIC is not (treated like a generic file instead of showing the image inline). Since we’re iPhone users, HEIC support would be pretty useful… Or maybe this is something that’s been worked…

What are the supported image formats?

plusmid (Tim Scheuermann) October 28, 2022, 8:14am 2

Hi @mikaeleiman, welcome to the Mattermost forums.

Mattermost currently supports PNG, JPEG, BMP, TIFF, PSD, WebP, and GIF. The latest addition is WebP, so no HEIC support yet.

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