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Convert your WordPress post to markdown with a click of a button! 
This plugin helps you cross-post to Dev.to by generating the markdown for a Dev.to post. 
This plugin adds a button to the frontend for admin users. When you click the button, the post is converted to markdown via a wp-json API.
Requires php-dom on server:
sudo apt-get install php-dom

Post to Dev.to

Convert your WordPress post to markdown with a click of a button!

JHoppe

Damn simple [markdown]#via shortcode[/markdown] for wordpress. 
This plugin uses <a href="http://parsedown.org/" rel="nofollow ugc">parsedown</a> and <a href="http://highlightjs.org" rel="nofollow ugc">highlight.js</a>. Zero configuration.
Write this into the editor:
<pre><code>[markdown] 
#h1
</code></pre>
<h3>h2</h3>
<pre><code>text 
____source code (two ore more underscores will be replaced by empty spaces) 
____source code (two ore more underscores will be replaced by empty spaces) 

 `javascript
source code
 `
[/markdown]
</code></pre>
and the shortcode content will be parsed with parsedown. Syntax highlighting will appear for the source codes.
This plugin is available at <a href="https://github.com/JohannesHoppe/markdown-shortcode" rel="nofollow ugc">github</a>, too. 
Please report issues at github, pull requests are welcome, too!

Markdown Shortcode

Damn simple markdown for wordpress via shortcode, uses parsedown (parsedown.org) and highlight.js (highlightjs.org).

Post to Dev.to vs Markdown Shortcode