QOI
Quite OK Image Format
What is QOI?
QOI (Quite OK Image Format) is a fast, lossless image format created by Dominic Szablewski. It offers compression ratios comparable to PNG but with encode and decode speeds 20-50x faster. QOI is extremely simple, with the entire specification fitting on a single page, making it easy to implement and ideal for applications where speed is more important than maximum compression.
Key Features
Common Use Cases
Advantages
- Extremely fast encoding and decoding (20-50x faster than PNG)
- Lossless compression
- Supports transparency (alpha channel)
- Dead-simple format specification
- Easy to implement in any language
- Open-source and public domain
Limitations
- Compression ratio slightly worse than optimized PNG
- Very new format with limited ecosystem support
- No browser support
- No animation support
- Not widely adopted yet
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