Inv-Sorter is a Fabric client-side mod intended for singleplayer worlds only.
Press H to open the preset GUI, where you will be able to set up how your inventory should be sorted. This mod includes 4 default presets and each preset can be renamed.
Inside the inventory screen, a Sort button appears. Clicking it opens a small UI showing the four preset names Inv 1, Inv 2, Inv 3, Inv 4. Click on one to apply the selected layout and sort your inventory accordingly.
⚠️ Note: This mod does NOT work on multiplayer servers. By all means, it is meant for singleplayer ONLY.