edwardrpool

This plugin is ultra lightweight. It adds a media button above the tinyMCE editor on both the page and post editor, which when pressed copies a shortlink to your clipboard.
The idea behind this plugin is to add short-linking capabilities, without all the bloated code found in other plugins. This plugin does not alter the database, nor is any data saved or collected. It uses the built in WordPresspost/page ID’s in the URL.

ERP ShortLinks

A very lightweight plugin which adds a shortlink button to the post/page editor for quickly sharing on social platforms.

Shivanand Sharma

Ruchika Karda

WP Shortlinker will help you achieve actual permanent links when inserting links in WordPress editor by changing the internal links to use shortlinks instead of permalinks.
Once you have installed and activated the plugin, you can go ahead and try inserting a link into WordPress editor from the kitchen sink. The plugin will automatically change it to the shortlink.

WP Shortlinker

WP Shortlinker changes the internal links to use shortlinks instead of permalinks inside the WordPress editor.

ERP ShortLinks vs WP Shortlinker