APNG
An extension of PNG for frame-based animation that keeps PNG's lossless compression and full alpha transparency while remaining compatible with static PNG decoders.
General information
- Format name
- Animated Portable Network Graphics
- Extension
.apng- MIME type
image/apng- Category
- image
- Data type
- Binary
- Developer
- PNG Working Group
Image properties
- Structure
- Raster
- Compression
- Lossless
- Transparency
- Yes
- Animation
- Yes
File signatures
| Offset | Hexadecimal | ASCII | Description |
|---|---|---|---|
| 0 | 89 50 4E 47 0D 0A 1A 0A | — | APNG uses the standard PNG signature. An acTL chunk before IDAT distinguishes an animated PNG stream. |
Common uses
Animated interface graphics
Short web animations
Lossless animated images
Animated stickers
Animations requiring alpha transparency
Related formats
Technical resources
| Resource | Publisher | Link |
|---|---|---|
| Portable Network Graphics (PNG) Specification (Third Edition) | World Wide Web Consortium | Open resource ↗ |
Record information
- Verified
- October 4, 2026
- Last updated
- October 4, 2026