Skip to content
/ qoi Public
forked from phoboslab/qoi

The “Quite OK Image” format for fast, lossless image compression

Notifications You must be signed in to change notification settings

MKCG/qoi

 
 

Folders and files

NameName
Last commit message
Last commit date

Latest commit

 
 
 
 
 
 
 
 
 
 
 
 
 

Repository files navigation

QOI Logo

QOI - The “Quite OK Image Format” for fast, lossless image compression

Single-file MIT licensed library for C/C++

See 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 converts between png <> qoi
  • qoibench.c a simple wrapper to benchmark stbi, libpng and 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.

Tools

Implementations & Bindings of QOI

QOI Support in Other Software

Packages

AUR - system-wide qoi.h, qoiconv and qoibench install as split packages.

Implementations not yet conforming to the final specification

These implementations are based on the pre-release version of QOI. Resulting files are not compatible with the current version.

About

The “Quite OK Image” format for fast, lossless image compression

Resources

Stars

Watchers

Forks

Releases

No releases published

Packages

No packages published

Languages

  • C 100.0%