Bart Stroeken

One of the fancy things within WordPress-plugins, is the availability of shortcodes. 
These codes will provide access to plugin-specific things, like displaying a gallery, or a Google-Map. 
The downside about this, is that there’s no generic overview of all available shortcodes within your environment.
This plugin will provide a list of all available shortcodes, right where the action is. When you’re editing your content. And it won’t skip the details: it’ll show you what its origin is. 
Most of all, if it’s available in the sourcecode, the documentation will be shown.
The plugin is largely based on <a href="http://php.net/manual/en/book.reflection.php" rel="nofollow ugc">PHP’s Reflection functionality</a>, and therefore only available from PHP version 5.0.0.

Shortcode Reference

This plugin will provide a list and details about available shortcodes in your current installment. All when you need it most - when editing content.

Corrado Franco

This plugin allows one to create footnotes by using markdown notation. 
It is for footnotes only. No other markdown tag is taken into account
Example:
<pre><code>I have more [^1] to say up here.

[^1]: To say down here.
</code></pre>
If used with jetpack and enabled markdown, it only shows the buttons without modifying the text content. 
Unlike jetpack-markdown, footnotes will appear in the exact point where they have been inserted. To go back to text mode click on the footnote number.
N.B 
This plugin also works with Gutenberg. But the button only appears in the Classic Editor. 
For now with Gutenberg enter the codes directly.
<h3>Configuration</h3>
No configuration is necessary.
Considering that this plugin, like others working with “markdown”, parsing the page every time I load it, I highly recommend using a caching plugin.
Customizing Footnote Layout
If you want the footnote number to be logically separated from the note (for CSS targeting) but want to prevent unwanted line breaks or extra spacing caused by WordPress’s automatic paragraphs, you can add the following CSS to your theme:
<pre><code>/* Ensure the footnote stays inline or as a specific block */
p > span.footnote {
 display: inline-block;
}

/* Remove extra spacing from the paragraph containing the footnote */
p:has(> span.footnote) {
 margin-bottom: 0;
 margin-top: 0;
 padding: 0;
}
</code></pre>

Blank Footnotes

Simple plugin to show footnotes using markdown notation.

Shortcode Reference vs Blank Footnotes