Compare
APNG vs WebP
APNG and WebP both support animation and transparency. APNG extends PNG with lossless animation; WebP offers web-oriented lossy and lossless encoding.
Which format should you choose?
Consider APNG for a PNG-based lossless workflow; test WebP when optimizing web delivery size.
Good fit for APNG
Short animations with transparency · Animated interface elements · Animated diagrams
- Animation that should retain PNG-style transparency
- Short visual assets where lossless output matters
Good fit for WebP
Web image delivery · Photographs · Transparent web assets
- Reducing web-image transfer size
- Assets that need transparency or animation
Basic information
| Field | APNG | WebP |
|---|---|---|
| Extension | .apng, .png | .webp |
| MIME type | image/apng | image/webp |
| Common uses | Short animations with transparency · Animated interface elements · Animated diagrams | Web image delivery · Photographs · Transparent web assets |
| How to open | Open APNG files in a supporting browser or image viewer. Before using one as animation, verify the target browser and playback speed. | Open WebP files in a compatible browser, image viewer, or image editor. |
| Export or convert | For a still-image delivery, consider PNG; for another web animation option, consider WebP. After conversion, check transparency and animation playback. | When exporting WebP to JPEG, transparency is not retained and the output is lossy. When exporting to PNG, decide whether a still image is sufficient and handle animation separately if necessary. Before converting JPEG or PNG to WebP, choose lossy or lossless encoding and confirm transparency and animation requirements. |
Choose by use case
Animation that should retain PNG-style transparency
Short animations with transparency · Animated interface elements · Animated diagrams
APNGShort visual assets where lossless output matters
Short animations with transparency · Animated interface elements · Animated diagrams
APNGReducing web-image transfer size
Web image delivery · Photographs · Transparent web assets
WebPAssets that need transparency or animation
Web image delivery · Photographs · Transparent web assets
WebPKey point 1
APNG extends PNG with animation.
More on the differencesKey point 2
WebP supports both lossy and lossless compression.
More on the differencesMore on the differences
Export representative samples and compare playback, transparency, visual quality, and file size in the target environment.
- APNG fits PNG-oriented production.
- WebP offers additional encoding choices for web delivery.
- Neither format is always smaller; results depend on the source and settings.
Frequently asked questions
Is WebP always smaller than APNG?
No. Compare real exports at an acceptable quality level and verify playback support.