What kinds of photo and video can I upload?

Photos are stored as JPEG or PNG and videos as MP4, MOV or WebM; other picture formats are converted in your browser where they can be.

• Photos — JPEG and PNG.
• Videos — MP4, MOV (the format iPhones record) and WebM (what Android Chrome captures).

If you are on an iPhone, your photos are probably HEIC. You do not need to do anything: iOS converts them to JPEG as you pick them, because the picker is told we accept JPEG and PNG.

Another picture format — a WebP saved from the web, say — is converted to JPEG in your own browser before it is sent. If your browser cannot read the file at all, that tile says “Format not supported” rather than failing silently.