Crunch - Insane(ly slow but wicked good) PNG image optimization

•    Python

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Crunch is a tool for lossy PNG image file optimization. It combines selective bit depth, color type, and color palette reduction with zopfli DEFLATE compression algorithm encoding using the pngquant and zopflipng PNG optimization tools. This approach leads to a significant file size gain relative to lossless approaches at the expense of a relatively modest decrease in image quality (see example images below). Historical benchmarks with the files included in Cédric Louvrier's PNG Test Corpus versus other commonly used PNG optimization software are available in BENCHMARKS.md.

png png-compression compression image-quality image-processing images image image-compression pngquant zopflipng lossy lossy-compression

php-imageoptim-api - PHP wrapper for ImageOptim API

•    PHP

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This library allows you to resize and optimize images using ImageOptim API.ImageOptim offers advanced compression, high-DPI/responsive image mode, and color profile support that are much better than PHP's built-in image resizing functions.

imageoptim-api imageoptim image-optimization image-resizer image-quality dimensions api web-api

PhotoSauce - MagicScaler high-performance, high-quality image processing pipeline for .NET

•    CSharp

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High-performance image processing pipeline for .NET. Implements best-of-breed algorithms, linear light processing, and sharpening for the best image resizing quality available. Speed and efficiency are unmatched by anything else on the .NET platform. *Windows 7 and Windows Sever 2008 R2 are supported only with the Platform Update installed.

image-processing image-resizing imaging jpeg png tiff resize-images image-quality

optimise-images - Batch image resizer, optimiser and profiler using ImageMagick convert, OptiPNG, JpegOptim and optional ZopfliPNG, Guetzli and MozJPEG

•    Shell

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Batch jpg, jpeg and png image resizer, optimiser and image profiler using ImageMagick convert, OptiPNG, JpegOptim and optional Mozilla MozJPEG, ZopfliPNG and Google Guetzli (work in progress for Guetzli). Profile original images via script's profile flag and pass the directory path to the directory containing the images you want to optimise /home/nginx/domains/domain.com/public/images. This is your baseline to compare resizing and optimisations applied to images using above default variable parameters.

zopflipng optipng jpegoptim png jpg jpeg imagemagick image-resizer webp optimize-images lossless-images image-quality image-conversion resize-images png-compression png-optimization png-optimizer guetzli mozjpeg jpegtran