Flyimg - Microservice to resize and crop images on the fly

•    PHP

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Image resizing, cropping and compression on the fly with the impressive MozJPEG compression algorithm. One Docker container to build your own Cloudinary-like service.You pass the image URL and a set of keys with options, like size or compression. Flyimg will fetch the image, convert it, store it, cache it and serve it. The next time the request comes, it will serve the cached version.

image image-processing resize-images crop-image docker jpeg png webp gif compression-algorithm flysystem microservice mozjpeg imagemagick compression crop face-detection image-api image-service

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

optimizt - CLI image optimization tool

•    Javascript

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Optimizt is a CLI tool that helps you prepare images during frontend development. It can compress PNG, JPEG, GIF and SVG lossy and lossless and create AVIF and WebP versions for raster images.

svg png jpeg gif webp image-compression avif

grunt-contrib-imagemin - Minify PNG and JPEG images.

•    Javascript

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Select optimization level between 0 and 7. The optimization level 0 enables a set of optimization operations that require minimal effort. There will be no changes to image attributes like bit depth or color type, and no recompression of existing IDAT datastreams. The optimization level 1 enables a single IDAT compression trial. The trial chosen is what OptiPNG thinks it’s probably the most effective. The optimization levels 2 and higher enable multiple IDAT compression trials; the higher the level, the more trials.

gruntplugin compress gif image img jpeg jpg minify png svg

imaginary - Fast, simple, stateless HTTP microservice for high-level image processing with first-class support for Docker & Heroku

•    Go

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Fast HTTP microservice written in Go for high-level image processing backed by bimg and libvips. imaginary can be used as private or public HTTP service for massive image processing with first-class support for Docker & Fly.io. It's almost dependency-free and only uses net/http native package without additional abstractions for better performance.

image image-processing resize-images libvips crop-image microservice docker watermark jpeg png webp gif go-library imaging-service thumbnail-service thumbnail

libvips - A fast image processing library with low memory needs

•    C

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libvips is a demand-driven, horizontally threaded image processing library. Compared to similar libraries, libvips runs quickly and uses little memory. It has around 300 operations covering arithmetic, histograms, convolution, morphological operations, frequency filtering, colour, resampling, statistics and others.

imagemagick png cpp jpeg tiff graphicsmagick image-processing gif webp libvips openexr nifti openslide heic pdfium image-processing-library library image-manipulation

imgp - Multi-core batch image resizer and rotator

•    Python

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imgp is a command line image resizer and rotator for JPEG and PNG images. It can resize (or thumbnail) and rotate thousands of images in a go, at lightning speed, while saving significantly on storage. Powered by multiprocessing, an intelligent adaptive algorithm, recursive operations, shell completion scripts, EXIF preservation (and more), imgp is a very flexible utility with well-documented easy to use options.

image-processing image-compression image-manipulation image-optimization image-resize image-rotate multiprocessing standalone command-line terminal

ImageMagick

•    C++

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ImageMagick is a software suite to create, edit, and compose bitmap images. It can read, convert and write images in a variety of formats (over 100) including DPX, EXR, GIF, JPEG, JPEG-2000, PDF, PhotoCD, PNG, Postscript, SVG, and TIFF. Use ImageMagick to translate, flip, mirror, rotate, scale, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves.

image-processing image-identification library

Sharp - High performance Node.js image processing

•    Javascript

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The typical use case for this high speed Node.js module is to convert large images in common formats to smaller, web-friendly JPEG, PNG and WebP images of varying dimensions.Resizing an image is typically 4x-5x faster than using the quickest ImageMagick and GraphicsMagick settings.

webp image-processing jpeg png tiff svg libvips exif icc image performance crop resize overlay gif dzi thumbnail

JPNG - JPNG is a bespoke image file format that combines the compression benefits of JPEG with the alpha channel support of a PNG file

•    Objective-C

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In iOS and Mac OS apps there is typically a choice of two image formats: PNG format allows transparency but produces large image files and is unsuited to compressing images like photographs; JPEG is great for creating small files and provides a range of compression qualities to suit the subject matter, but doesn't allow for transparency. JPNG is a new image format that combines the best of both of the other formats. JPNG is not really a format in its own right, it's a simple file wrapper that combines a JPEG and PNG image within the same file. JPEG is used to efficiently compress the RGB portion of the image and PNG is used to store the alpha channel.

bimg - Small Go package for fast high-level image processing powered by libvips C library

•    Go

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Small Go package for fast high-level image processing using libvips via C bindings, providing a simple programmatic API. bimg is able to output images as JPEG, PNG and WEBP formats, including transparent conversion across them.

processing golang image resize png jpeg crop webp libvips crop-image watermark go-library image-processing image-processing-library

libvips - A fast image processing library with low memory needs.

•    C

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libvips is a 2D image processing library. Compared to similar libraries, libvips runs quickly and uses little memory. libvips is licensed under the LGPL 2.1+. It has around 300 operations covering arithmetic, histograms, convolutions, morphological operations, frequency filtering, colour, resampling, statistics and others. It supports a large range of numeric formats, from 8-bit int to 128-bit complex. It supports a good range of image formats, including JPEG, TIFF, PNG, WebP, FITS, Matlab, OpenEXR, PDF, SVG, HDR, PPM, CSV, GIF, Analyze, DeepZoom, and OpenSlide. It can also load images via ImageMagick or GraphicsMagick.

libvips python-bindings jpeg openslide imagemagick tiff gif webp graphicsmagick openexr

Imagine - 🖼️ PNG/JPEG optimization app for macOS, Windows and Linux.

•    TypeScript

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Imagine is a desktop app for compression of PNG and JPEG, with a modern and friendly UI. Save for web.

image-compression save-for-web jpegmini pngquant tinypng linux-app webp jpeg desktop cross-platform

iOS-WebP - Google's WebP image format decoder and encoder for iOS

•    Objective-C

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Google's WebP image format offers better compression compared to PNG or JPEG, allowing apps to send/retrieve images with smaller file sizes, reducing request times and hopefully provide a better user experience. #Usage Don't forget to #import <iOS-WebP/UIImage+WebP.h>. There are 3 methods in iOS-WebP, converting images to WebP format, converting images from WebP format, and setting an image's transparency.

Scrimage - Scala image processing library

•    Scala

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Scrimage is a consistent, idiomatic, and immutable scala library for manipulating and processing of images. The aim of the this library is to provide a quick and easy way to do the kinds of image operations that are most common, such as scaling, rotating, converting between formats and applying filters. It is not intended to provide functionality that might be required by a more "serious" image processing application - such as face recognition or movement tracking.

jpeg filters image image-processing imaging-library

pngquant - Command-line utility and a library for lossy compression of PNG images

•    C

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pngquant is a PNG compressor that significantly reduces file sizes by converting images to a more efficient 8-bit PNG format with alpha channel (often 60-80% smaller than 24/32-bit PNG files). Compressed images are fully standards-compliant and are supported by all web browsers and operating systems.

palette png png-compression conversion smaller stdin image-optimization quantization image-library

GraphicsMagick

•    C++

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GraphicsMagick is the swiss army knife of image processing. It provides a robust and efficient collection of tools and libraries which support reading, writing, and manipulating an image in over 88 major formats including important formats like DPX, GIF, JPEG, JPEG-2000, PNG, PDF, PNM, and TIFF.

image-processing image-conversion image-identification library

lepto - Automated image Editing, Optimization and Analysis via CLI and a web interface

•    Javascript

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The main purpose of this tool is to automate image optimization and analysis. This project is recent, so use it with care, I'm listening to all feedback (we can talk via twitter, don't follow me I never tweet). What is the difference with ImageMin? I think that if you deal with large applications, then go on ImageMin, but if you are building small static websites and you want to optimize your resources easily, then you could try lepto.

nodejs images optimization automation lepto front-end gui jpg webp png gif svg

mort - Storage and image processing server written in Go

•    Go

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An S3-compatible image processing server written in Go. Still in active development.

image-processing storage docker jpeg png webp resize-images crop-image resize tranform libvips dockerfile s3 images microservice processing thumbnails

IJG - Independent JPEG Group

•    C

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IJG is an informal group that writes and distributes a widely used free library for JPEG image compression. JPEG is designed for compressing either full-color or gray-scale images of natural, real-world scenes.

jpeg image image-library image-compression image-encoding