file-type - Detect the file type of a Buffer/Uint8Array

•    Javascript

---

The file type is detected by checking the magic number of the buffer.Show your support for this module by buying this excellent Node.js course.

nodejs uint8array buffer magic-numbers file magic file-types detect mime type archive image img pic picture flash photo video check is exif exe binary jpg png gif webp flif cr2 tif bmp jxr psd zip tar rar gz bz2 7z dmg mp4 m4v mid mkv webm mov avi mpg mp3 m4a ogg opus flac wav amr pdf epub mobi swf rtf woff woff2 eot ttf otf ico flv ps xz sqlite xpi cab deb ar rpm z lz msi mxf mts wasm webassembly blend bpg docx pptx xlsx 3gp jp2 jpm jpx mj2 aif odt ods odp xml

gulp-imagemin - Minify PNG, JPEG, GIF and SVG images

•    Javascript

---

Issues with the output should be reported on the imagemin issue tracker.🦄 Support my open-source work by buying this awesome video course: Learn to build apps and APIs with Node.js by Wes Bos Try his free JavaScript 30 course for a taste of what to expect & check out his ES6, React, Sublime courses.

gulpplugin imagemin image img picture photo minify minifier compress png jpg jpeg gif svg

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

•    Javascript

---

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

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

•    Python

---

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

---

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

Flyimg - Microservice to resize and crop images on the fly

•    PHP

---

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

SharpZipLib - Compression Library in CSharp

•    CSharp

---

#ziplib (SharpZipLib, formerly NZipLib) is a Zip, GZip, Tar and BZip2 library written entirely in C# for the .NET platform. It is implemented as an assembly (installable in the GAC), and thus can easily be incorporated into other projects (in any .NET language).

compression zlib tar bzip2 gzip compress data-compression

csso - CSS minifier with structural optimizations

•    Javascript

---

CSSO (CSS Optimizer) is a CSS minifier. It performs three sort of transformations: cleaning (removing redundant), compression (replacement for shorter form) and restructuring (merge of declarations, rulesets and so on). As a result your CSS becomes much smaller. Warning: CSSO uses early versions of CSSTree that still in active development. CSSO doesn't guarantee API behind syntax field or AST format will not change in future releases of CSSO, since it's subject to change in CSSTree. Be carefull with CSSO updates if you use syntax API until this warning removal.

css-minifier css minifier usage-data fast compress minify optimise optimisation csstree

7-Zip - File archiver with a high compression ratio

•    C

---

7-Zip is a file archiver with the high compression ratio. The program supports 7z, XZ, BZIP2, GZIP, TAR, ZIP, WIM, ARJ, CAB, CHM, CPIO, CramFS, DEB, DMG, FAT, HFS, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VHD, WIM, XAR, Z.

compression deflate zlib zip decompression data-compression utility

SharpCompress - a fully native C# library for RAR, 7Zip, Zip, Tar, GZip, BZip2

•    CSharp

---

SharpCompress is a compression library for .NET/Mono/Silverlight/WP7 that can unrar, un7zip, unzip, untar unbzip2 and ungzip with forward-only reading and file random access APIs. Write support for zip/tar/bzip2/gzip is implemented. The major feature is support for non-seek...

zip 7zip bzip2 gzip sharpcompress

SharpZipLib - #ziplib is a Zip, GZip, Tar and BZip2 library written entirely in C# for the

•    CSharp

---

SharpZipLib was originally ported from the GNU Classpath java.util.zip library for use with SharpDevelop, which needed gzip/zip compression. bzip2 compression and tar archiving were added later due to popular demand.The SharpZipLib homepage has precompiled libraries available for download, a link to the forum for support, release history, samples and more.

SWFTools - Utilities to work with Adobe Flash files

•    C

---

SWFTools is a collection of utilities for working with Adobe Flash files (SWF files). The tool collection includes programs for reading SWF files, combining them, and creating them from other content (like images, sound files, videos or sourcecode).

document-conversion swf-converter swf adobe-flash flash

Zopfli - Compression library from Google

•    C++

---

Zopfli Compression Algorithm is a compression library programmed in C to perform very good, but slow, deflate or zlib compression. The basic function to compress data is ZopfliCompress in zopfli.h. Use the ZopfliOptions object to set parameters that affect the speed and compression. Use the ZopfliInitOptions function to place the default values in the ZopfliOptions first.

compression deflate zip image-compression

Libarchive - C library and command-line tools for reading and writing tar, cpio, zip, ISO, and other

•    C

---

The libarchive project develops a portable, efficient C library that can read and write streaming archives in a variety of formats. It also includes implementations of the common tar, cpio, and zcat command-line tools that use the libarchive library.

zip compression archive bzip2 library tar gzip lzip lz4

CharLS, a JPEG-LS library

•    C++

---

An optimized implementation of the JPEG-LS standard for lossless and near-lossless image compression. JPEG-LS is a low-complexity standard that matches JPEG 2000 compression ratios. In terms of speed, CharLS outperforms open source and commercial JPEG LS implementations.

codec compression graphics imaging jpeg

Brunsli - Lossless JPEG repacking library

•    C++

---

Brunsli is a lossless JPEG repacking library. Brunsli allows for a 22% decrease in file size while allowing the original JPEG to be recovered byte-by-byte. Brunsli has been specified as the lossless JPEG transport layer in the Committee Draft of JPEG XL Image Coding System and is ready to power faster and more economical transfer and storage of photographs.

jpeg jpg compression jpeg-repacker lossless

7zSharp

•    

---

7zSharp is a .NET 2.0 LGPL wrapper around the 7z LZMA SDK and executable written in C#, providing a library (DLL) wrapper and simplified API to encode and decode using the 7z library. Ability to encode: 7z (.7z), ZIP (.zip), GZIP (.gz), BZIP2 (.bz2) and TAR (.tar) Ability to...

compression zip 7z 7zip 7-zip export

miniz - miniz: Single C source file zlib-replacement library, originally from code

•    C

---

Miniz is a lossless, high performance data compression library in a single source file that implements the zlib (RFC 1950) and Deflate (RFC 1951) compressed data format specification standards. It supports the most commonly used functions exported by the zlib library, but is a completely independent implementation so zlib's licensing requirements do not apply. Miniz also contains simple to use functions for writing .PNG format image files and reading/writing/appending .ZIP format archives. Miniz's compression speed has been tuned to be comparable to zlib's, and it also has a specialized real-time compressor function designed to compare well against fastlz/minilzo. Please use the files from the releases page in your projects. Do not use the git checkout directly! The different source and header files are amalgamated into one miniz.c/miniz.h pair in a build step (amalgamate.sh). Include miniz.c and miniz.h in your project to use Miniz.

essential-image-optimization - Essential Image Optimization - an eBook

•    CSS

---

Bring up a terminal and type node --version. Node should respond with a version at or above 0.10.x. If you require Node, go to nodejs.org and click on the big green Install button.

images image-processing image-optimization jpeg png gif compression image-compression image optimisation webp mozjpeg

7-Zip-zstd - 7-Zip with support for Brotli, Fast-LZMA2, Lizard, LZ4, LZ5 and Zstandard

•    C

---

Zstandard v1.3.7 is a real-time compression algorithm, providing high compression ratios. It offers a very wide range of compression / speed trade-off, while being backed by a very fast decoder. Brotli v.1.0.7 is a generic-purpose lossless compression algorithm that compresses data using a combination of a modern variant of the LZ77 algorithm, Huffman coding and 2nd order context modeling, with a compression ratio comparable to the best currently available general-purpose compression methods. It is similar in speed with deflate but offers more dense compression.

brotli lizard lz4 lz5 zstd zstandard 7-zip compression archiver 7z