Sybre Waaijer

Hover Highlights is a simple WordPress plugin that adds a subtle highlight effect to the Gutenberg/Block Editor. When you hover over a block, it gets highlighted with a dashed outline and a box-shadow. The highlight disappears when you focus on the block to reduce distraction.
This plugin is ideal for content creators who want to visually distinguish individual blocks within the Block Editor.
The code and this readme are mostly written by ChatGPT.

Hover Highlights – Editor highlighting

Adds highlighting on hover with a distraction-free experience for the Gutenberg/Block Editor.

sigalitam

Just highlight is a WordPress plugin for highlighting text in your posts or pages, and easily create beautiful posts that highlight what really matters to your readers.
How to use? 
* Select the sentence you want to highlight with the cursor. 
* Click the Just Highlight button at the top of the post editor. 
* Save the post. 
* View the post and be amazed from the animation of the highlight as you scroll down the post.
You can also: 
* Choose the text highlight background color. 
* Choose the highlight speed animation (Slow, Normal, Fast, Very Fast). 
* Choose YES / NO to activate or disable the highlight animation.

Just Highlight

Just highlight - Select the text you would like to highlight, click the highlight button and save the post.

Hover Highlights – Editor highlighting vs Just Highlight