What converting APNG to GIF actually does
APNG is the format behind modern animated stickers and emoji: full colour, real alpha transparency, and smooth edges GIF cannot represent. The catch is support. Browsers play APNG fine, but many email clients, forums, and older chat apps show only the first frame, or nothing at all. Converting to GIF trades image quality for the certainty that the animation actually moves wherever you post it.
The conversion runs on your own device. Every frame of the APNG is decoded in the browser, a 256-colour palette is computed, and the GIF is assembled locally. Nothing uploads, so a sticker converts in the time your machine takes, not the time a queue takes.
- Drop the APNG; the frames decode in your browser
- A colour palette is built and the GIF assembled locally
- Download a file that animates in email, forums, and old chat apps