Jekyll ExtLinks

This Jekyll plugin adds custom attributes (rel="nofollow", target="_blank", etc.) to external links in your content.

Description

This Jekyll plugin adds custom attributes to external links in your content. For example, you can add rel="nofollow" to all external links by default (with exceptions if you need them), or something like class="external". You can also use it to add target="_blank" to external links, but generally it is not recommended as it leads to bad user experience. Multiple attributes are allowed.

Installation

1. Install the gem from RubyGems: gem install jekyll-extlinks. The Nokogiri gem is required. If you experience any problems installing Nokogiri ("ERROR: Failed to build gem native extension", etc.), run gem update --system and try again.

2. Add this to your project's Gemfile:

gem 'jekyll-extlinks'

3. Add this to your project's _config.yml:

plugins:
  - jekyll-extlinks

Configuration

Configure the plugin in your _config.yml. Notice the indentation matters. Example:

extlinks:
  attributes: {rel: nofollow, target: _blank}
  rel_exclude: ['host1.com', 'host2.net']

• attributes are required - at least one of them; rel_exclude is optional
• Links to hosts listed in rel_exclude will not have the rel attribute set
• Links which have the rel attribute already will keep it unchanged, like this one in Markdown: [Link text](http://someurl.com){:rel="dofollow"}
• Relative links will not be processed
• Don't forget to actually use the plugin (see below)

Usage

Use the plugin in your Jekyll layouts: {{ content | extlinks }}

Notes

Developed by Dmitry Ogarkov - http://ogarkov.com/jekyll/plugins/extlinks/

Based on http://dev.mensfeld.pl/2014/12/rackrails-middleware-that-will-ensure-relnofollow-for-all-your-links/