GNOME support for iOS optimised PNGs

PNG-based image reader and writer with support for arbitrary data, such as hitboxes or animation data for your 2D game.

Command line tool that lets you add tEXt chunks in your .png file

Images to WebP or Sequenced PNG to WebP Animation

Small image utility featuring an implementation of the median-cut color quantization algorithm and Floyd-Steinberg dithering in C.

CLI Image Processing and Editing Suite

Steganography using PNG format and LSB method

Sequential, Parallel programming (OpenMP, and MPI)

Simple C/C++ Library for image loading/saving

Stegman is a tool that employs cryptography and steganography to safely hide messages in various files. It can also reverse the process to extract information from a file.

Steganography (BMP, PNG, WAV, MP3, AVI, FLV)

画像の入出力

A standalone fork of stb_image.h without the other stb libs (for git submodule)

The Quantizer - A Swift-based reimplementation of ImageAlpha

PNG to line printer converter

Example code demonstrate how to work with libpng

golang wrapper for libimagequant.

A tool to find rectangular area for color pixels that live in the input .png image

A modified pngnq: convert png images to 256 colours.

Simple PNG data chunk dumper.