Notion Table of Contents (Outline) is a free Chrome add-on developed by Cside. It falls under the category of Browsers and the subcategory of Add-ons & Tools. This add-on allows users to view a table of contents (outline) in the sidebar for Notion pages, enhancing navigation through long Notion pages.

With Notion Table of Contents (Outline), users can easily navigate through lengthy Notion pages by quickly accessing the table of contents in the sidebar. This feature enables efficient browsing and saves time when searching for specific sections within a page.

It is worth noting that when visiting a page without headings, the table of contents is automatically hidden, preventing unnecessary clutter in the sidebar. Overall, Notion Table of Contents (Outline) is a useful tool for Notion users who frequently work with lengthy pages and need a convenient way to navigate through them.