Will resizing break the APNG animation?

No. Every frame is decoded, rescaled to the new dimensions, and re-assembled into a single APNG with the original loop count and frame delays intact. In our testing, a 600×600 24-frame APNG scaled to 50% (300×300) came out at roughly a quarter of the original byte size with the loop and timing unchanged. If a source uses heavily optimised delta frames, the encoder coalesces them to a full canvas before scaling — the animation still plays correctly.

Does resizing an APNG lose quality?

The resize itself is the only lossy step, and only when you scale down — that's just normal interpolation, the same as resizing any photo. APNG's container is lossless, so the re-encode adds no compression artefacts and the 8-bit alpha transparency stays smooth-edged. Scaling up can't recreate detail that wasn't there, so enlarged APNGs look softer; whole-number multipliers (200%, 300%) hold up better than odd ratios.

What's the smallest I can make an APNG without it looking bad?

For UI loaders and emoji, 64×64 to 128×128 is usually the floor before fine detail disappears. Because file size scales with the square of the dimensions, dropping from 512×512 to 128×128 removes about 94% of the pixels — often the difference between a 2 MB sticker and one that fits under a platform's emoji cap. Combine a percentage preset with a tighter "Target file size (%)" if you need both smaller dimensions and a hard size budget.

Why is my APNG file still large after resizing?

APNG is lossless, so even a small animation with many frames or a photographic (non-flat) source stays heavy. Use "Target file size (%)" or "Specific file size" to push the encoder harder, or — if the loop has lots of subtle motion — consider compressing it or converting to an animated GIF, which trades the colour depth for a smaller file. For purely cropping rather than scaling, use the APNG cropper.

Can I resize a regular static PNG here too?

Yes — a single-frame PNG works the same way and comes out as a normal PNG. If you specifically want the dedicated still-image tool, use the PNG resizer; for animated frames, this APNG resizer keeps the whole sequence together.

Resize APNG Images Online

Upload an APNG and resize it by percentage, preset resolution, or custom width and height, then download the resized APNG.

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