APNG to Animated WebP Converter

Convert APNG to animated WebP while preserving full dimensions, frames, timing, loops, and alpha where representable.

Upload a GIF, APNG, or animated WebP up to 1 GB. Static files and incomplete animation tables are rejected instead of flattened.

GIF uses a 256-color palette and only 1-bit transparency. APNG and WebP can preserve full alpha. Very short delays may be normalized by decoders, and disposal/blend models do not map perfectly between formats.

No animation is silently flattened. The conversion report identifies frame count, loop handling, disposal/blend classes, resource buckets, and fidelity warnings.

何が保持されるか

Dimensions, complete composited frames, alpha where the target permits it, per-frame delays, and finite or infinite loops are retained as closely as the target format can represent them.

輸出カーレ

The ZIP contains full-canvas PNG frames plus timing.json with source frame numbers, delays, disposal, blend, canvas dimensions, and loop semantics. Frame ranges never affect conversion pages.