John Godley

Sniplets is a generic text insertion plugin with support for an extensible processing framework. At it’s simplest this means you can dynamically replace text in your posts with text that may be defined elsewhere, or created by some other module. For example, you can use Sniplets to perform syntax highlighting of files, execute custom PHP code, insert data from a database, and perform all manner of other useful tasks within a standard interface.
<ul>
<li>Replace tags in a post with pre-defined text</li>
<li>Apply processing functions to the pre-defined text to perform additional functionality</li>
<li>Automatic insertion – data can be made to automatically appear in various places (header, footer, before post, after post, more tag, initialization)</li>
<li>Custom processors can be written by the user</li>
<li>Fully localized</li>
</ul>
Sniplets is available in:
<ul>
<li>English</li>
<li>Belorussian thanks to Marcis Gasuns</li>
</ul>
<h3>Documentation</h3>
Full documentation can be found on the <a href="http://urbangiraffe.com/plugins/sniplets/" rel="nofollow ugc">Sniplets</a> page.

Sniplets

Sniplets is a generic text insertion plugin.  Use it to manually or automatically insert data, PHP, syntax highlight, and almost anything else!

Whodunit

Jb Audras

Maxime Pertici

This plugin gives the capability to automatically add content before and/or after your posts, pages, or any public custom post types.
It is also possible to prevent your before/after content from showing on a post or a page directly from the editor screen (works on both Classic Editor and Block Editor). You can also prevent your before/after content from displaying on specific post types or categories.
With this plugin, build your before/after content within the Gutenberg block editor, even if you are using Classic Editor!
Indeed, the block editor is activated for these specific blocks of contents even if Gutenberg is not activated on your website!
I strongly recommend to use it alongside one of my other free plugins, <a href="https://wordpress.org/plugins/reusable-blocks-extended/" rel="ugc">Reusable Blocks Extended</a>. These two plugins are totaly independant, but together they provide a full editorial experience! ⭐️

Insert Blocks Before or After Posts Content

The Blocksy theme gives the opportunity to customize some features before and after the content but prevent you to choose the order of eventual additional content you may try to add in these places. This plugin is pretty cool as you can add all the blocks you need in the order and composition you need.

Very handy

Automatically insert blocks of content before and/or after each posts/page content.

Sniplets vs Insert Blocks Before or After Posts Content