ModsFinder

Backslot Mod: Json Generator

by medecoole

Backslot Mod: Json Generator is a Fabric and Quilt utility that builds the JSON files needed to show other mods' items on a player's back slot.

FabricQuiltClient-side onlyAll rights reserved1.21.11

What it does

Installing the mod in a world adds a button to the top left corner of the screen. Pressing it opens an interactive GUI where a player sets up the transform and presses Generate File, which writes a file into the modpack folder under back/transforms. Only the player's game needs it, and servers run without it. Fabric API is required, and the card covers only the 1.21.11 build for Fabric and Quilt.

Key features

  1. Generator button

    A button in the top left corner of the screen opens the generator interface.

  2. JSON file output

    The configured settings are written into a JSON file named after the item in the modpack folder.

  3. Resource pack placement

    The generated file is moved into the assets folder of a resource pack or mod, under the mod ID and back transforms path, so the item sits correctly on the back slot.

Compatibility

Latest build for each game version and loader.

1.21.111.0.01.0.0
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

How it compares

Full comparison

Great Backslot also covers 1.21.11 and is not open source, but it runs on NeoForge too and is client and server. Nicos Backslots is an open source Fabric and Quilt option for 1.19 – 1.21.1 that needs both sides. BackSlot by Flike is open source, Fabric only, for 1.20.1 and server required with client optional.

ModLoadersGame versionsEnvironmentUpdated
Backslot Mod: Json GeneratorFabric and Quilt1.21.11Client-side only2026-05-20
Great BackslotFabric, NeoForge and Quilt1.21.1 – 1.21.11Client and server2026-06-26
Nicos BackslotsFabric and Quilt1.19 – 1.21.1Client and server2025-12-07
BackSlot by FlikeFabric1.20.1Server required, client optional2025-09-24

Questions

Does Backslot Mod: Json Generator need Fabric API?

Yes. Fabric API is listed as a required dependency and must be installed alongside this mod.

Which versions are supported?

The mod is published only for 1.21.11, with Fabric and Quilt files dated 2026-05-20.

In the catalog

Backslot Mod: Json Generator is one of 17,631 Equipment mods on ModsFinder, and one of 8,894 Equipment mods for Fabric. 19,862 mods support Minecraft 1.21.11.

Equipment mods17,631Fabric modsMods for 1.21.1119,862

More from medecoole

All projects
Sea Weapons1.20.1 – 1.21.11Backslot Mod1.20.1 – 26.3Reeling Scythes1.20.1 – 26.2Mede's Decor1.20.1 – 26.2Plushiez1.20.1 – 1.21.5Origins Weapons1.20.1

Similar mods

VeinMiner1.17 – 26.3Nature's Compass1.7.10 – 26.3Item Highlighter1.12.2 – 26.3Easy Anvils1.18.2 – 26.3uku's Armor HUD1.20.1 – 26.3Immersive Armors1.16.5 – 26.2

What the author says

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.
medecoole, on the Modrinth page

Official listing

Owner
medecoole
Published
2026-05-19
Updated on Modrinth
2026-05-20
Facts verified
2026-10-15

Tags

EquipmentUtility
Open on ModrinthCompare