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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