Divider is a subscription-based personalization tool for Firefox that enhances the organization of your toolbar. It allows users to add a divider or separator to neatly group toolbar buttons into two distinct sections. This feature is particularly useful for those who want to streamline their browsing experience by categorizing their tools more effectively.

The divider is customizable, enabling users to adjust the size and label of the divider to fit their needs. When the size is modified, the divider's icon can also be rotated to a horizontal position, making it visually distinct in the overflow menu. This functionality not only improves the aesthetic of the toolbar but also enhances usability by providing a clear visual cue for organization.