APNG vs QOI: Which Should You Use?
Side-by-side comparison of APNG and QOI image formats — features, pros, cons, and conversion options.
APNG is best for High-quality animated images with transparency. QOI is best for Real-time applications requiring fast lossless image encoding.
Quick Verdict
- ✓ Animated PNG with full alpha transparency
- ✓ Backward compatible with PNG
- ✓ Better quality than GIF
- ✗ Larger file size than GIF
- ✓ Extremely fast encode/decode
- ✓ Lossless compression
- ✓ Simple specification
- ✗ Lower compression than PNG
Specs Comparison
Side-by-side technical comparison of APNG and QOI
| Feature | APNG | QOI |
|---|---|---|
| Category | Image | Image |
| Year Introduced | 2004 | 2021 |
| MIME Type | image/apng | image/qoi |
| Extensions | .apng | .qoi |
| Animation | ✓ | ✗ |
| Hdr | ✗ | ✗ |
| Lossless | ✓ | ✓ |
| Lossy | ✗ | ✗ |
| Max Color Depth | 32-bit | 8-bit |
| Transparency | ✓ | ✓ |
Pros & Cons
APNG
- ✓ Animated PNG with full alpha transparency
- ✓ Backward compatible with PNG
- ✓ Better quality than GIF
- ✗ Larger file size than GIF
- ✗ Limited editor support
- ✗ Not supported in all browsers
QOI
- ✓ Extremely fast encode/decode
- ✓ Lossless compression
- ✓ Simple specification
- ✗ Lower compression than PNG
- ✗ Very limited adoption
- ✗ No advanced features
When to Use Each
Choose APNG when...
- You need files optimized for High-quality animated images with transparency
- Animated PNG with full alpha transparency
- Backward compatible with PNG
- You need lossless quality
Choose QOI when...
- You need files optimized for Real-time applications requiring fast lossless image encoding
- Extremely fast encode/decode
- Lossless compression
- You need lossless quality
How to Convert
Convert between APNG and QOI for free on ChangeThisFile
Frequently Asked Questions
APNG is best for High-quality animated images with transparency, while QOI is best for Real-time applications requiring fast lossless image encoding. Both are image formats but they differ in compression, compatibility, and intended use cases.
It depends on your use case. APNG is better for High-quality animated images with transparency. QOI is better for Real-time applications requiring fast lossless image encoding. Consider your specific requirements when choosing between them.
Go to the APNG to QOI converter on ChangeThisFile. The conversion runs entirely in your browser — your file never leaves your device. It's free with no signup required.
Direct conversion from QOI to APNG is not currently supported. Check the conversion pages for available routes using intermediate formats.
File size depends on the content and compression settings. APNG preserves full quality. QOI preserves full quality. For the smallest files, choose the format with lossy compression that meets your quality needs.
Yes, APNG supports animation, but QOI does not. This may be important depending on your use case.
Both APNG and QOI are supported file formats that are free to use. You can convert between them for free on ChangeThisFile — browser-based conversions have no limits and your files never leave your device.
QOI is newer — it was introduced in 2021, while APNG dates back to 2004. Newer formats often offer better compression and features, but older formats tend to have wider compatibility.
Related Comparisons
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