While there are Jekyll plugins to minify assets just like the Rails Asset
Pipeline, GitHub generates sites using the --safe option to disable custom
plugins for security reasons. This means that those plugins won’t work.
However, you could store some assets in _assets/, run the
_build/preprocess_assets.rb script below to generate the minified files in
assets.
require 'sprockets'
# Get relevant paths
project_root = File.expand_path('..', File.dirname(__FILE__))
app_css_file = File.join(project_root, 'assets', 'stylesheets', 'application.css')
app_js_file = File.join(project_root, 'assets', 'javascripts', 'application.js')
# Initialize Sprockets
environment = Sprockets::Environment.new
environment.append_path(File.join(project_root, '_assets', 'javascripts'))
environment.append_path(File.join(project_root, '_assets', 'stylesheets'))
# Set configuration
environment.js_compressor = :uglifier
environment.css_compressor = :yui
# Write minifies JS & CSS into files
File.open(app_css_file, 'w') { |f| f.write environment['application.css'].to_s }
File.open(app_js_file, 'w') { |f| f.write environment['application.js'].to_s }
# See; https://gist.github.com/itskingori/9954229
Then push to GitHub. Comment, discuss or view this script here.