Inventory Hotswap
Inventory Hotswap is a client-side mod that opens up new possibilities for inventory management. With it, you can instantly swap the selected item with any of the elements located in the column above it.
Main Features
Simply hold the assigned key (default — left Alt) and scroll the mouse wheel to select the desired item for replacement. Since the mod makes changes to the standard interface, the settings include options for personalizing the GUI appearance when the hotkey is activated.
Quick Selection
The quick selection function allows using number keys 1-3 while holding the hotkey for instant switching to the corresponding item. In the settings, you can activate the "inverted mode" option, which is disabled by default.
There is also the ability to replace an entire inventory row simultaneously — for this, you need to hold the hotkey (default ALT) and crouch. The quick selection function works in this mode as well.

Display Settings
To change the way the selection panel is displayed, go to the .minecraft/config/inventoryhotswap.json file and choose one of the following options:
PUSHED (default)
The PUSHED mode moves the remaining survival/adventure interface elements to the top of the vertical selection panel. This is the standard operating mode.

INVISIBLE
The INVISIBLE mode makes the survival/adventure interface invisible only when the hotkey is pressed, returning to normal display after a selection is made.

OVERLAY
The OVERLAY mode does not change the survival/adventure interface, and the vertical selection panel is displayed on top of the GUI.

Compatibility
Currently supported versions:
- Fabric 1.16 - 1.19.3
- Due to constant critical changes in every Forge update, only Fabric is supported from now on.