With CKEditor 4 reaching end of life on June 30, 2023 and the last published release having a number of known security vulnerabilities now is an excellent time to consider upgrading your Drupal 7 website to CKEditor 5.

Upgrading to CKEditor 5 will ensure that your site continues to remain secure into the future while providing content authors with a modern, fully featured, rich text editor.

I just released a new module for Drupal 7.x. Titled Simple Table of Contents, the module provides an easy and automatic way to add a table of contents to all of your content.