2021-11-24 11:07:17 +01:00
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# QOI - The “Quite OK Image” format for fast, lossless image compression
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Single-file MIT licensed library for C/C++
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See [qoi.h](https://github.com/phoboslab/qoi/blob/master/qoi.h) for
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the documentation.
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More info at https://phoboslab.org/log/2021/11/qoi-fast-lossless-image-compression
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2021-11-24 22:28:35 +01:00
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⚠️ Please note that this library is not yet ready to deal with untrusted input.
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2021-11-27 13:21:16 +01:00
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⚠️ 2021.11.27 – the specification for QOI has changed to accomodate some
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2021-11-27 18:36:17 +01:00
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concerns with the format. If you are working on a QOI implementation, please
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refer to
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2021-11-27 13:21:16 +01:00
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[#37 The QOI File Format Specification](https://github.com/phoboslab/qoi/issues/37)
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for the details.
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2021-11-27 18:36:17 +01:00
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These specification changes are ~~not yet reflected in the code here~~
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reflected in qoi.h now.
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2021-11-27 13:21:16 +01:00
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2021-11-24 11:07:17 +01:00
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## Why?
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Compared to stb_image and stb_image_write QOI offers 20x-50x faster encoding,
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3x-4x faster decoding and 20% better compression. It's also stupidly simple and
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fits in about 300 lines of C.
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## Example Usage
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- [qoiconv.c](https://github.com/phoboslab/qoi/blob/master/qoiconv.c)
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converts between png <> qoi
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- [qoibench.c](https://github.com/phoboslab/qoi/blob/master/qoibench.c)
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a simple wrapper to benchmark stbi, libpng and qoi
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