Jonathan Desrosiers

Linchpin

Aaron Ware

Note: This plugin does not support the block editor but should continue to work without issue when using it with custom post types and the <a href="https://wordpress.org/plugins/classic-editor/" rel="ugc">Classic Editor Plugin</a>.
Before WordPress displays a post’s content, the content gets passed through multiple filters to ensure that it safely appears how you enter it within the editor.
One of these filters is <a href="https://codex.wordpress.org/Function_Reference/wpautop" title="wpautop" rel="nofollow ugc">wpautop</a>, which replaces double line breaks with <code></code> tags, and single line breaks with <code> </code> tags. However, this filter sometimes causes issues when you are inputting a lot of HTML markup in the post editor.
This plugin displays a checkbox in the publish meta box of the post edit screen that disables the <a href="https://codex.wordpress.org/Function_Reference/wpautop" title="wpautop" rel="nofollow ugc">wpautop</a> filter for that post.
Also adds a ‘wpautop’, or ‘no-wpautop’ class to the post_class filter to help with CSS styling.

Toggle wpautop

Easily disable the default wpautop filter on a post by post basis.

Chris Dillon

<blockquote>
This plugin is up for adoption.
</blockquote>
Un-Line-Break is a lightweight plugin with a very specific purpose: Improved shortcode readability.
Normally, in the post editor, placing shortcodes on separate lines (like HTML formatting) results in extra line breaks in the rendered output, thanks to the WordPress auto-paragraph function (wpautop).
This plugin removes those extra line breaks from the rendered output so, in the post editor, you can place shortcodes on separate lines, thus making it easier to read and edit them.
It will not remove any double-spacing or <code></code> or <code> </code> tags that you have added.

Un-Line-Break

Remove unwanted line breaks from shortcode content.

Toggle wpautop vs Un-Line-Break