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Converts PNG files to Windows icon resource files.

pngcheck verifies the integrity of PNG, JNG and MNG files (by checking the internal 32-bit CRCs [checksums] and decompressing the image data); it can optionally dump almost all of the chunk-level information in the image in human-readable form. For example, it can be used to print the basic statistics about an image (dimensions, bit depth, etc.); to list the color and transparency info in its palette (assuming it has one); or to extract the embedded text annotations. This is a command-line program with batch capabilities. pngsplit - break a PNG, MNG or JNG image into constituent chunks (numbered for easy reassembly) png-fix-IDAT-windowsize - fix minor zlib-header breakage caused by older libpng

JasPer is a software-based implementation of the codec specified in the emerging JPEG-2000 Part-1 standard (i.e., ISO/IEC 15444-1). The JasPer software is written in the C programming language. LICENSE: MIT

JpGraph is an OO class library for PHP. JpGraph makes it easy to draw both "quick and dirty" graphs with a minimum of code and complex professional looking graphs which requires a very fine grain of control. The library assigns context sensitive default values for most parameters which helps minimize the learning curve.

potrace is a Peter Selinger's GPLed utility for tracing bitmaps - converting them into smooth, scalable images. It accepts as input a bitmap B/W images (PBM, PGM, PPM and BMP formats), and returns encapsulated PostScript (EPS) as the default output. Other output format are available: PS, SVG, Xfig, PGM, PDF and experimental GimpPath. You can create scalable images from scans, such as logos, hand taken notes, etc. The resulting smooth images can then be rendered at any resolution.

The Persistence of Vision(tm) Ray-Tracer creates three-dimensional, photo-realistic images using a rendering technique called ray-tracing. It reads in a text file containing information describing the objects and lighting in a scene and generates an image of that scene from the view point of a camera also described in the text file. Ray-tracing is not a fast process by any means, but it produces very high quality images with realistic reflections, shading, perspective and other effects.

ppminfo shows details of an ppm-file on the console. It seems this is the only utility missing from netpbm.

Preview is a very simple Image Viewer LICENSE: GPL2 or later

Precision Raster Image Convolution Engine. PRICE can open several image file formats and apply high-quality filters and other enhancements.

Prison is a barcode API currently offering a nice Qt API to produce QR code and Data Matrix barcodes, and can easily be made support more.