gulp-jekyll-minifier

1. Copy/paste gulpfile.js and package.json in your jekyll project root.

2. Exclude these files from jekyll _config.yml adding :

    ```
    exclude:
        - package.json
        - gulpfile.js
        - yarn.lock
        - package-lock.json
    ```
   

3. Remember to gitignore node_modules

4. Install package with yarn or npm:

   yarn install
   

   or

   npm install
   

5. Run minifications with

   jekyll build && gulp
   

   or

   npm run minify
   

   or

   yarn minify