This mod lets you generate json files for making resource packs or mods compatible with the Backslot Mod through an interactive GUI.
Step 1: Install the mod and join a world.
Step 2: Open the pause menu.
Step 3: Press the button in the top left corner of your screen.
Step 4: Configure as you wish and press the Generate File button, which will generate a new file located at YOUR MODPACK FOLDER/back_transforms/YOUR_ITEM.json.
Step 5: Put that file into your resource pack or mod (for mods under assets/MOD_ID/back_transforms).
Congratulations! You should now see the item properly positioned when in the Backslot.
Make sure to use the Backslot Mod so you can see the changes in-game!

This is a mod made so you can generate the json files for adding compatibility to the Backslot Mod!