Marco

Shortcode Simplex it’s a lightweight Shortcode plugin creator, permit all WP Admins to define new shortcode ( single or enclosed one ) to any kind of purpose. With it’s minimal human readable and 
intuitive interface you can create and manage all your Shortcode.

Shortcode Simplex

This lightweight plugin permit to create and manage easily user define Shortcode inside Wordpress.

Rik Schennink

Use Snippy to quickly create your own custom shortcodes.
A Snippy shortcode is built by combining bits. A bit can be a file, like a Stylesheet or a Script, or a piece of code, like HTML, CSS or JavaScript.
The “code” bits can contain placeholders, which are automatically made accessible as shortcode attributes.
Time for a quick example.
Let’s create a shortcode to embed YouTube videos. We’ll add an HTML bit and set the it’s value to the YouTube embed iframe.
<pre><code><iframe src="https://youtube/embed/JZYYJY4yoK4"/>
</code></pre>
Now to make this bit a bit more flexible we will replace the YouTube video id with a placeholder value <code>{{id}}</code>.
<pre><code><iframe src="https://youtube/embed/{{id}}"/>
</code></pre>
Yay! We’ve finished our first bit!
Now we can create a new Snippy shortcode and add the YouTube iFrame HTML bit. After saving the shortcode we can use our new and shiny YouTube shortcode in the text editor.
<pre><code>[youtube id=JZYYJY4yoK4]
</code></pre>
Ready for more?
The below 3 minute YouTube video shows how you can use Snippy to turn a jQuery plugin into a WordPress plugin.
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/JZYYJY4yoK4?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>

Snippy

Makes it easy to create your own custom shortcodes.

Shortcode Simplex vs Snippy