Add Jekyll Minifier

Jekyll HTML/XML/CSS/JS Minifier utilising yui-compressor, and htmlcompressor

https://github.com/digitalsparky/jekyll-minifier

JEKYLL_ENV=production bundle exec jekyll serve

To switch part of your config settings depending on the environment, use the build command option, for example --config _config.yml,_config.dev.yml. Settings in later files override settings in earlier files.

Gemfile

@@ -5,6 +5,7 @@ gem 'github-pages', group: :jekyll_plugins
 group :jekyll_plugins do
   gem 'jekyll-avatar'
   gem 'jekyll-feed'
+  gem 'jekyll-minifier'
   gem 'jekyll-sitemap'
 end
 

Gemfile.lock

@@ -18,6 +18,7 @@ GEM
     commonmarker (0.17.13)
       ruby-enum (~> 0.5)
     concurrent-ruby (1.1.8)
+    cssminify2 (2.0.1)
     dnsruby (1.61.5)
       simpleidn (~> 0.1)
     em-websocket (0.5.2)
@@ -90,6 +91,7 @@ GEM
     html-pipeline (2.14.0)
       activesupport (>= 2)
       nokogiri (>= 1.4)
+    htmlcompressor (0.4.0)
     http_parser.rb (0.6.0)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
@@ -130,6 +132,12 @@ GEM
     jekyll-mentions (1.6.0)
       html-pipeline (~> 2.3)
       jekyll (>= 3.7, < 5.0)
+    jekyll-minifier (0.1.10)
+      cssminify2 (~> 2.0)
+      htmlcompressor (~> 0.4)
+      jekyll (>= 3.5)
+      json-minify (~> 0.0.3)
+      uglifier (~> 4.1)
     jekyll-optional-front-matter (0.3.2)
       jekyll (>= 3.0, < 5.0)
     jekyll-paginate (1.1.0)
@@ -199,6 +207,9 @@ GEM
       gemoji (~> 3.0)
       html-pipeline (~> 2.2)
       jekyll (>= 3.0, < 5.0)
+    json (2.5.1)
+    json-minify (0.0.3)
+      json (> 0)
     kramdown (2.3.1)
       rexml
     kramdown-parser-gfm (1.1.0)
@@ -256,6 +267,8 @@ GEM
       ethon (>= 0.9.0)
     tzinfo (1.2.9)
       thread_safe (~> 0.1)
+    uglifier (4.2.0)
+      execjs (>= 0.3.0, < 3)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.7)
@@ -277,6 +290,7 @@ DEPENDENCIES
   github-pages
   jekyll-avatar
   jekyll-feed
+  jekyll-minifier
   jekyll-sitemap
   mgem
   yard-coderay

_config.dev.yml

@@ -0,0 +1,2 @@
+jekyll-minifier:
+  exclude: "*"

_config.yml

@@ -14,6 +14,7 @@ include: ['_index.html']
 plugins:
   - jekyll-avatar
   - jekyll-feed
+  - jekyll-minifier
   - jekyll-sitemap
 exclude:
   - CODEOWNERS