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Markdown Underline Plugin

Overrides the default behavior to convert for example double underscore __ inline blocks to underline <u> instead of <strong>.

Use with caution, as underlining makes text harder to read.

If you don't think so, please be thankful for your great sight and ortholexia.

Anyways, it's just another tag for your CSS to tinker with, you don't have to underline.

The Markdown Underline Plugin is for Grav CMS.


Installing the Markdown Underline plugin can be done in one of two ways. The GPM (Grav Package Manager) installation method enables you to quickly and easily install the plugin with a simple terminal command, while the manual method enables you to do so via a zip file.

GPM Installation (Preferred)

The simplest way to install this plugin is via the Grav Package Manager (GPM) through your system's terminal (also called the command line). From the root of your Grav install type:

bin/gpm install markdown-underline

This will install the Markdown Underline plugin into your /user/plugins directory within Grav. Its files can be found under /your/site/grav/user/plugins/markdown-underline.

Manual Installation

To install this plugin, just download the zip version of this repository and unzip it under /your/site/grav/user/plugins. Then, rename the folder to markdown-underline. You can find these files on GitHub or via

You should now have all the plugin files under


NOTE: This plugin is a modular component for Grav which requires Grav and the Error and Problems to operate.

Admin Plugin

If you use the admin plugin, you can install directly through the admin plugin by browsing the Plugins tab and clicking on the Add button.


Before configuring this plugin, you should copy the user/plugins/markdown-underline/markdown-underline.yaml to user/config/plugins/markdown-underline.yaml and only edit that copy.

Here is the default configuration and an explanation of available options:

enabled: true
'*':  em
'**': strong
'_':  em
'__': u

Note that if you use the admin plugin, a file with your configuration, and named markdown-underline.yaml will be saved in the user/config/plugins/ directory once the configuration is saved in the admin.


With the default configuration, when you write

This will be __underlined text__.

it will yield

This will be <u>underlined text</u>.

You can also override the configuration in a page's frontmatter like so:

  "__": i


Customize the HTML tags used in basic markdown. You could underline with `__` for example.





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