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Instead of relying on the non-standardized quality metric for JPEG compression, let's make use of a dissimilarity check to hone in on an optimal quality setting for each JPEG to be compressed
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README.md
cjpeg-dssim Adding the formerly undocumented ImageMagick dependency to both the s… Nov 5, 2015

README.md

cjpeg-dssim

Introduction

Automatically find the ideal JPEG quality setting for a JPEG image by calculating the output images dissimilarity from the input JPEG. This frees us from having to rely on the unstandardized quality integer.

Installation instructions

Place this script anywhere in your $PATH. Requires Bash >= 4.x

Required tools

CLI usage example

cjpeg-dssim jpegoptim /path/to/input-image.jpg

Supported encoders:

  • jpegoptim
  • mozjpeg
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