154 lines
9.1 KiB
Markdown
154 lines
9.1 KiB
Markdown
|
|
|
|
# QOI - The “Quite OK Image Format” for fast, lossless image compression
|
|
|
|
Single-file MIT licensed library for C/C++
|
|
|
|
See [qoi.h](https://github.com/phoboslab/qoi/blob/master/qoi.h) for
|
|
the documentation and format specification.
|
|
|
|
More info at https://qoiformat.org
|
|
|
|
|
|
## Why?
|
|
|
|
Compared to stb_image and stb_image_write QOI offers 20x-50x faster encoding,
|
|
3x-4x faster decoding and 20% better compression. It's also stupidly simple and
|
|
fits in about 300 lines of C.
|
|
|
|
|
|
## Example Usage
|
|
|
|
- [qoiconv.c](https://github.com/phoboslab/qoi/blob/master/qoiconv.c)
|
|
converts between png <> qoi
|
|
- [qoibench.c](https://github.com/phoboslab/qoi/blob/master/qoibench.c)
|
|
a simple wrapper to benchmark stbi, libpng and qoi
|
|
|
|
|
|
## MIME Type, File Extension
|
|
|
|
The recommended MIME type for QOI images is `image/qoi`. While QOI is not yet
|
|
officially registered with IANA, I believe QOI has found enough adoption to
|
|
prevent any future image format from choosing the same name, thus making a
|
|
MIME type collision highly unlikely ([see #167](https://github.com/phoboslab/qoi/issues/167)).
|
|
|
|
The recommended file extension for QOI images is `.qoi`
|
|
|
|
|
|
## Limitations
|
|
|
|
The QOI file format allows for huge images with up to 18 exa-pixels. A streaming
|
|
en-/decoder can handle these with minimal RAM requirements, assuming there is
|
|
enough storage space.
|
|
|
|
This particular implementation of QOI however is limited to images with a
|
|
maximum size of 400 million pixels. It will safely refuse to en-/decode anything
|
|
larger than that. This is not a streaming en-/decoder. It loads the whole image
|
|
file into RAM before doing any work and is not extensively optimized for
|
|
performance (but it's still very fast).
|
|
|
|
If this is a limitation for your use case, please look into any of the other
|
|
implementations listed below.
|
|
|
|
|
|
## Improvements, New Versions and Contributing
|
|
|
|
The QOI format has been finalized. It was a conscious decision to **not** have a
|
|
version number in the file header. If you have a working QOI implementation today,
|
|
you can rest assured that it will be compatible with all QOI files tomorrow.
|
|
|
|
There are a lot of interesting ideas for a successor of QOI, but none of these will
|
|
be implemented here. That doesn't mean you shouldn't experiment with QOI, but please
|
|
be aware that pull requests that change the format will not be accepted.
|
|
|
|
Likewise, pull requests for performance improvements will probably not be accepted
|
|
either, as this "reference implementation" tries to be as easy to read as possible.
|
|
|
|
|
|
## Tools
|
|
|
|
- [floooh/qoiview](https://github.com/floooh/qoiview) - native QOI viewer
|
|
- [pfusik/qoi-ci](https://github.com/pfusik/qoi-ci/releases) - QOI Plugin installer for GIMP, Imagine, Paint.NET and XnView
|
|
- [iOrange/QoiFileTypeNet](https://github.com/iOrange/QoiFileTypeNet/releases) - QOI Plugin for Paint.NET
|
|
- [iOrange/QOIThumbnailProvider](https://github.com/iOrange/QOIThumbnailProvider) - Add thumbnails for QOI images in Windows Explorer
|
|
- [Tom94/tev](https://github.com/Tom94/tev) - another native QOI viewer (allows pixel peeping and comparison with other image formats)
|
|
- [qoiconverterx](https://apps.apple.com/br/app/qoiconverterx/id1602159820) QOI <=> PNG converter available on the Mac App Store
|
|
- [kaetemi/qoi-ma](https://github.com/kaetemi/qoi-max) - QOI Bitmap I/O Plugin for 3ds Max
|
|
- [rtexviewer](https://raylibtech.itch.io/rtexviewer) - texture viewer, supports QOI
|
|
- [rtexpacker](https://raylibtech.itch.io/rtexpacker) - texture packer, supports QOI
|
|
- [DmitriySalnikov/godot_qoi](https://github.com/DmitriySalnikov/godot_qoi) - QOI GDNative Addon for Godot Engine
|
|
- [dan9er/farbfeld-convert-qoi](https://gitlab.com/dan9er/farbfeld-convert-qoi) - QOI <=> farbfeld converter
|
|
- [Ben1138/unity-qo](https://github.com/Ben1138/unity-qoi) - QOI support for the Unity3D Game Engine
|
|
- [xiaozhuai/jetbrains-qo](https://github.com/xiaozhuai/jetbrains-qoi) - [QOI Support](https://plugins.jetbrains.com/plugin/19352-qoi-support) for Jetbrains' IDE.
|
|
- [serge-ivamov/QOIql](https://github.com/serge-ivamov/QOIql) - MacOS QuickLook plugin for QOI
|
|
- [tobozo/kde-thumbnailer-qoi](https://github.com/tobozo/kde-thumbnailer-qoi) - QOI Thumbnailer for KDE
|
|
- [walksanatora/qoi-thumbnailer-nemo](https://github.com/walksanatora/qoi-thumbnailer-nemo) - QOI Thumbnailer for Nemo
|
|
|
|
|
|
## Implementations & Bindings of QOI
|
|
|
|
- [pfusik/qoi-ci](https://github.com/pfusik/qoi-ci) - Ć, transpiled to C, C++, C#, Java, JavaScript, Python and Swift
|
|
- [kodonnell/qoi](https://github.com/kodonnell/qoi) - Python
|
|
- [JaffaKetchup/dqoi](https://github.com/JaffaKetchup/dqoi) - Dart, with Flutter support
|
|
- [Cr4xy/lua-qoi](https://github.com/Cr4xy/lua-qoi) - Lua
|
|
- [superzazu/SDL_QOI](https://github.com/superzazu/SDL_QOI) - C, SDL2 bindings
|
|
- [saharNooby/qoi-java](https://github.com/saharNooby/qoi-java) - Java
|
|
- [MasterQ32/zig-qoi](https://github.com/MasterQ32/zig-qoi) - Zig
|
|
- [rbino/qoix](https://github.com/rbino/qoix) - Elixir
|
|
- [NUlliiON/QoiSharp](https://github.com/NUlliiON/QoiSharp) - C#
|
|
- [aldanor/qoi-rust](https://github.com/aldanor/qoi-rust) - Rust
|
|
- [zakarumych/rapid-qoi](https://github.com/zakarumych/rapid-qoi) - Rust
|
|
- [takeyourhatoff/qoi](https://github.com/takeyourhatoff/qoi) - Go
|
|
- [DosWorld/pasqoi](https://github.com/DosWorld/pasqoi) - Pascal
|
|
- [elihwyma/Swift-QOI](https://github.com/elihwyma/Swift-QOI) - Swift
|
|
- [xfmoulet/qoi](https://github.com/xfmoulet/qoi) - Go
|
|
- [erratique.ch/qoic](https://erratique.ch/software/qoic) - OCaml
|
|
- [arian/go-qoi](https://github.com/arian/go-qoi) - Go
|
|
- [kchapelier/qoijs](https://github.com/kchapelier/qoijs) - JavaScript
|
|
- [KristofferC/QOI.jl](https://github.com/KristofferC/QOI.jl) - Julia
|
|
- [shadowMitia/libqoi](https://github.com/shadowMitia/libqoi) - C++
|
|
- [MKCG/php-qoi](https://github.com/MKCG/php-qoi) - PHP
|
|
- [LightHouseSoftware/qoiformats](https://github.com/LightHouseSoftware/qoiformats) - D
|
|
- [mhoward540/qoi-nim](https://github.com/mhoward540/qoi-nim) - Nim
|
|
- [wx257osn2/qoixx](https://github.com/wx257osn2/qoixx) - C++
|
|
- [Tiefseetauchner/lr-paint](https://github.com/Tiefseetauchner/lr-paint) - Processing
|
|
- [amstan/qoi-fpga](https://github.com/amstan/qoi-fpga) - FPGA: verilog
|
|
- [musabkilic/qoi-decoder](https://github.com/musabkilic/qoi-decoder) - Python
|
|
- [mathpn/py-qoi](https://github.com/mathpn/py-qoi) - Python
|
|
- [JohannesFriedrich/qoi4R](https://github.com/JohannesFriedrich/qoi4R) - R
|
|
- [shraiwi/mini-qoi](https://github.com/shraiwi/mini-qoi) - C, streaming decoder
|
|
- [10maurycy10/libqoi/](https://github.com/10maurycy10/libqoi/) - Rust
|
|
- [0xd34df00d/hsqoi](https://github.com/0xd34df00d/hsqoi) - Haskell
|
|
- [418Coffee/qoi-v](https://github.com/418Coffee/qoi-v) - V
|
|
- [Imagine-Programming/QoiImagePlugin](https://github.com/Imagine-Programming/QoiImagePlugin) - PureBasic
|
|
- [Fabien-Chouteau/qoi-spark](https://github.com/Fabien-Chouteau/qoi-spark) - Ada/SPARK formally proven
|
|
- [mzgreen/qoi-kotlin](https://github.com/mzgreen/qoi-kotlin) - Kotlin Multiplatform
|
|
- [Aftersol/Simplified-QOI-Codec](https://github.com/Aftersol/Simplified-QOI-Codec) - C99, streaming encoder and decoder, freestanding
|
|
- [AuburnSounds/gamut](https://github.com/AuburnSounds/gamut) - D
|
|
- [AngusJohnson/TQoiImage](https://github.com/AngusJohnson/TQoiImage) - Delphi
|
|
- [MarkJeronimus/qoi-java-spi](https://github.com/MarkJeronimus/qoi-java-spi) - Java SPI
|
|
|
|
## QOI Support in Other Software
|
|
|
|
- [Amiga OS QOI datatype](https://github.com/dgaw/qoi-datatype) - adds support for decoding QOI images to the Amiga operating system.
|
|
- [SerenityOS](https://github.com/SerenityOS/serenity) - supports decoding QOI system wide through a custom [cpp implementation in LibGfx](https://github.com/SerenityOS/serenity/blob/master/Userland/Libraries/LibGfx/QOILoader.h)
|
|
- [Raylib](https://github.com/raysan5/raylib) - supports decoding and encoding QOI textures through its [rtextures module](https://github.com/raysan5/raylib/blob/master/src/rtextures.c)
|
|
- [Rebol3](https://github.com/Oldes/Rebol3/issues/39) - supports decoding and encoding QOI using a native codec
|
|
- [c-ray](https://github.com/vkoskiv/c-ray) - supports QOI natively
|
|
- [SAIL](https://sail.software) - image decoding library, supports decoding and encoding QOI images
|
|
- [Orx](https://github.com/orx/orx) - 2D game engine, supports QOI natively
|
|
- [IrfanView](https://www.irfanview.com) - supports decoding and encoding QOI through its Formats plugin
|
|
- [ImageMagick](https://github.com/ImageMagick/ImageMagick) - supports decoding and encoding QOI, since 7.1.0-20
|
|
- [barebox](https://barebox.org) - bootloader, supports decoding QOI images for splash logo, since v2022.03.0
|
|
- [KorGE](https://korge.org) - & KorIM Kotlin 2D game engine and imaging library, supports decoding and encoding QOI natively since 2.7.0
|
|
- [DOjS](https://github.com/SuperIlu/DOjS) - DOS JavaScript Canvas implementation supports loading QOI files
|
|
- [XnView MP](https://www.xnview.com/en/xnviewmp/) - supports decoding QOI since 1.00
|
|
|
|
## Packages
|
|
|
|
- [AUR](https://aur.archlinux.org/pkgbase/qoi-git/) - system-wide qoi.h, qoiconv and qoibench install as split packages.
|
|
- [Debian](https://packages.debian.org/bookworm/source/qoi) - packages for binaries and qoi.h
|
|
- [Ubuntu](https://launchpad.net/ubuntu/+source/qoi) - packages for binaries and qoi.h
|
|
|
|
Packages for other systems [tracked at Repology](https://repology.org/project/qoi/versions).
|