APNG
Animated Portable Network GraphicsUsed for lossless full-color animation with alpha transparency.
- Family
- Images
- MIME
- image/apng
Free APNG to GIF conversion online, with the real animated-frame image encoding behavior, what gets lost, and a concrete way to check the output.
The APNG frame sequence, timing, disposal, and canvas are decoded first, then mapped onto whatever animation and color rules GIF actually supports. A clean first frame proves nothing about whether the full loop made it through. APNG decoding combines PNG image data with frame-control chunks, subframe offsets, blend operations, disposal rules, timing fractions, and loop count. Because GIF reduces every frame to an indexed palette with only on/off transparency, quality here comes down to color selection, dithering, disposal, timing, and the loop seam — with no audio at all.
Decoded canvas - A PNG-compatible sequence of full-color frames with alpha transparency. Written image - A frame animation or indexed-color image limited to a 256-color palette.
Used for lossless full-color animation with alpha transparency.
Designed for short animations and simple graphics.
Choose GIF when its particular balance of compatibility, alpha, animation, and file size matches the destination better than APNG.
Apps that lack APNG support may show only the first frame, while frame disposal can affect transparent motion.
Photographs and gradients can band, semi-transparent edges are reduced, and timing may be quantized.
The video-to-GIF path samples frames at 12 per second, caps width at 960 pixels, and drops audio entirely — GIF has no sound channel to carry it.
Play the complete loop in the destination browser and inspect transparent edges between frames.
Play the full loop and inspect color banding, disposal between frames, transparency, and the loop seam.