Guetzli is described as 'JPEG encoder that aims to improve the web experience through highly optimized image compression that still yields great image quality. The encoder requires substantially more time than libjpeg but the results have been considered much more impressive in human rated' and is an app in the development category. There are four alternatives to Guetzli for Mac, Windows and Linux. The best Guetzli alternative is MozJPEG, which is both free and Open Source. Other great apps like Guetzli are libjpeg-turbo, Flawless and libjpeg.
MozJPEG reduces file sizes of JPEG images while retaining quality and compatibility with the vast majority of the world's deployed decoders.
MozJPEG is the most popular Windows, Mac & Linux alternative to Guetzli.
MozJPEG is the most popular Open Source & free alternative to Guetzli.
libjpeg-turbo is a derivative of libjpeg that uses SIMD instructions (MMX, SSE2, NEON) to accelerate baseline JPEG compression and decompression on x86, x86-64, and ARM systems. On such systems, libjpeg-turbo is generally 2-4x as fast as the unmodified version of libjpeg, all...
Flawless is a Mac desktop app to facilitate iOS development by helping you compare between mockups and implemented designs in real time. The tool includes overlay and split comparison modes with built-in iOS simulator to help ensure designs are as expected.
Flawless is the most popular commercial alternative to Guetzli.
libjpeg is a widely-used free software library written in C which implements JPEG decoding and encoding functions alongside various utilities for handling JPEG images.
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