Durability Viewer
This add-on displays tool durability directly on the hotbar and inventory screens using only a resource pack. When paired with the behavior pack, it also displays the durability of armor and shields.

SCREENSHOTS // IN GAME PREVIEWS
Screens:
Durability is shown when hovering any tool.
N.B. - Item durability in the inventory screens will show even without the behavior pack.

SCREENSHOTS // IN GAME PREVIEWS
Subpacks:
1. Default (Without Armor and Shield Durability): No need to use the behavior pack with this
2. With Armor and Shield Durability