Yo, some images I download nowadays are .jfif, but they don’t render in a Kinopio space.
Example: https://us-east-1.linodeobjects.com/kinopio-uploads/xX929lO4yhGZ9O817NBRv/1630768387914.jfif
I don’t know if you’ve already added support for other new image formats like webp and avif? Could be a good time to knock em all out. 
i’d never even heard of this one. Are there any docs on what browsers support it? couldn’t find anythign here: "jfif" | Can I use... Support tables for HTML5, CSS3, etc
typically I only officially add file support when all modern/major browsers support it because it’d maybe be net/more confusing to add images to a space and wonder why other ppl can’t see them
I hadn’t heard of this format before either, but after some digging, it seems like jfif is essentially a JPEG file so presumably it works everywhere JPEG does? https://developer.mozilla.org/en-US/docs/Web/Media/Formats/Image_types#jpeg
oh okay cool, just added support for .jpe, .jif, .jfif (webp support already exists , and avif is not widely supported enough to add yet)