Convert GIF to AVIF

Converting GIF to AVIF is worth doing when the destination matters more than the source. GIF is built for short animations and simple graphics limited to 256 colours. AVIF is built for the smallest modern web images, at the cost of slower encoding. Which one you want depends entirely on where the image is going next.

AVIF also supports animation and compresses harder than WebP, so an animated GIF can shrink dramatically. Support is narrower, so this suits web delivery to current browsers rather than a file you need someone else to open.

AVIF compresses by discarding detail, so this conversion trades some fidelity for a much smaller file. At high quality settings the difference is invisible in photographs, though flat colour and sharp text can show artefacts. Keep the GIF original as your master copy.

AVIF compresses harder than anything else here, so coming from a lossless source the reduction can be dramatic. The cost is encoding time and narrow support. Use it for web delivery, and keep the lossless original as your master rather than treating the AVIF as an archive copy.

GIF stores an indexed palette rather than full colour values, so decoding expands those indices back into real pixels. Where the file holds several frames, the first is taken unless the target format supports animation.

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