HEIC and GIF explained
HEIC is the container Apple uses for photos taken on iPhone since iOS 11, holding images compressed with HEVC. It stores roughly the same visual quality as JPEG in about half the space, and can hold extras such as depth maps and Live Photo frames.
GIF is a 1987 format limited to a 256-colour palette per frame, with support for simple animation and one fully transparent colour. Its longevity is cultural rather than technical — nothing about it is efficient by modern standards.
- Where HEIC files come from
- Every iPhone photo taken since 2017, unless the camera format was changed to “Most Compatible”.
- Where GIF is used
- Reaction images, simple UI animations, and screen recordings shared in chat.