ITHMB is legacy and read-only here
ITHMB is an older raster format. It can usually be opened and converted from, but it's long obsolete, so there's no modern encoder to create new ITHMB files.
Looking to convert GIF to ITHMB? Here's the honest answer — and what works instead.
Turn your file into a share-worthy AI Effect — one tap, no prompts.
GIF is a 256-color raster format that supports simple looping animation — widely used for reactions, stickers and short clips.
GIF opens in every browser and image viewer.
Not here — ITHMB is a legacy format with no modern encoder. We can often read ITHMB as a source, but for output use a current format like APNG, WEBP or MP4.
GIF converts to APNG, WEBP or MP4 — free, no sign-up, no watermark.