Smart Bulk Transfer to Chest
You can transfer items in bulk from your inventory to the chest by pressing R on keyboard (officially called Reload).
Press R to Bulk Transfer
This will only transfer items that already has a stack in the chest.
For example, in the screenshot below, I have horns, stones and pal fluids in my inventory, and I also have them in the chest.
Inventory before Bulk Transfer
After pressing R, the items that already have a stack in the chest (horns, stones and pal fluids) will be transferred to the chest.
Other items that do not have a stack in the chest (such as pal spheres, keys) will remain in the inventory.
Inventory after Bulk Transfer
This trick is very useful for transferring items in bulk and greatly increases efficiency of resource gathering.