Installation:

- Install BepInEx (if you have installed BepInEx for other mods like Valheim Plus you can skip this step).

- Download the mod (QuickStack.zip) and unpack its contents into .../Valheim/BepInEx/plugins

- Done, you can run the game.

Features:

- Press a configured key (` by default) to quickly stack items from your inventory into a currently opened or nearby containers.

- Alt+Click an item in inventory to exclude that inventory slot from automatic stacking.

- Alt+Right Click an item in inventory to exclude that item from automatic stacking (item tooltip will change).

Configuration:
After you first run your game with the mod enabled, a config file will appear at .../Valheim/BepInEx/config/org.bepinex.plugins.valheim.quick_stack.cfg
You can customize the values to best suit your needs:
[QuickStack]

## Get key codes here: https://docs.unity3d.com/ScriptReference/KeyCode.html
# Setting type: String
# Default value: BackQuote
QuickStackKey = BackQuote

## How far from you is nearby, greater value = greater range
# Setting type: Single
# Default value: 3
NearbyRange = 3

## Whether to completely exclude consumables from quick stacking (food, potions).
# Setting type: Boolean
# Default value: true
IgnoreConsumable = true

## Whether to completely exclude ammo from quick stacking (arrows)
# Setting type: Boolean
# Default value: true
IgnoreAmmo = true

## Whether to put all types of trophies in the container if any trophy is found in that container.
# Setting type: Boolean
# Default value: true
CoalesceTrophies = true