Install ruby-oily-png by entering the following commands in the terminal:
sudo apt update sudo apt install ruby-oily-png
Description:
native mixin to speed up ChunkyPNG
OilyPNG is a Ruby C extension to speed up the pure Ruby ChunkyPNG library. It is a standalone module, so it does not require LibPNG, ImageMagick or any other library. Currently it has an alternative implementation of decoding and encoding PNGs, making these operations much faster, especially for PNG images that apply filtering.
Homepage: https://github.com/wvanbergen/oily_png/
Version: 1.2.1~dfsg-1build2
Section: universe/ruby