theme-next / hexo-filter-optimize

A Hexo plugin that optimize the pages loading speed.

hexo-filter-optimize

A hexo plugin that optimize the pages loading speed.

It will auto filter your html file, find the <link rel="stylesheet"> block and replace them into a javascript to optimize CSS delivery.

And inline the main.css into the html page like @maple3142 does.

It will improve your pages loading and get a higher score in the Google PageSpeed Insights.

Known Issues: This plugin may cause Font Awesome and PJAX to fail to load.

Installation

npm install hexo-filter-optimize

Usage

Activate the plugin in hexo's _config.yml like this:

filter_optimize:
  enable: true
  # remove the surrounding comments in each of the bundled files
  remove_comments: false
  css:
    # minify all css files
    minify: true
    # bundle loaded css files into one
    bundle: true
    # use a script block to load css elements dynamically
    delivery: true
    # make specific css content inline into the html page
    #   - only support the full path
    #   - default is ['css/main.css']
    inlines:
    excludes:
  js:
    # minify all js files
    minify: true
    # bundle loaded js files into one
    bundle: true
    excludes:
  # set the priority of this plugin,
  # lower means it will be executed first, default of Hexo is 10
  priority: 12

This plugin can be disabled by NODE_ENV in development to boost hexo generate:

export NODE_ENV=development

Comparison

Here is a result from GTmetrix to show you the changes between before and after. (Same web server located in Tokyo, Japan, vultr.com)

• Remove query strings from static resources - let all the proxies could cache resources well. (https://gtmetrix.com/remove-query-strings-from-static-resources.html)
• Make fewer HTTP requests - through combined the loaded js files into the one.
• Prefer asynchronous resources - change the css delivery method using a script block instead of link tag.
• And TODOs ...