Inventory Slots
by BitByLogic
Inventory Slots shows the index of each container slot as a client-side text overlay, which helps when debugging or laying out a UI on Fabric.
What it does
Inventory Slots draws a slot index over each slot in a container screen, so a developer or configurator can match a number to a position without counting. Overlays can be toggled on and off, and an options menu opens from the mod's config screen. The text can be scaled from 0.25x to 2.0x and colored with hex values, with optional shadowing for readability against different UI textures.
Each label can be placed at one of several anchor points, from top-left through center to bottom-right, which gives precise text alignment. Settings are saved between game sessions, and positions can be adjusted while the game is running to see the effect at once. Only the client needs the mod, and it is compatible with servers, so players can join a server that does not run it.
The mod is published for Fabric only, with files for 1.21.4 – 26.2 across nine release versions. The latest file is 2.0.5 for 26.2. It depends on Fabric API and is released under the MIT License, so the code is open source.
Key features
Slot index overlay
A number is drawn over each container slot so the index of any slot can be read directly from the screen.
Adjustable text
Label size runs from 0.25x to 2.0x, and the color can be set with a hex value to suit the screen.
Anchor point alignment
Labels can be aligned to top-left, center, bottom-right and other anchor points for exact placement.
Live toggle and config menu
Overlays can be switched on or off during play, and a config menu holds the remaining options.
Gallery
Compatibility
Latest build for each game version and loader.
26.x2 of 2 versions with builds
1.21.x7 of 7 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Mod developers and UI configurators who need to see slot indices while building or adjusting inventory screens. Players who only want to play normally have no need for it.
How it compares
Lwib is a Fabric client-side mod for 1.21.10 – 26.2, open source under the GNU General Public License v3.0 or later. Better Health is a Fabric client-side mod for 1.21.11 – 26.1.2 under the MIT License, so it covers a different version span. Slot Lock is also a Fabric client-side mod under the MIT License, for 1.21.11 – 26.1. Inventory Slots shares that environment and license, but the version range differs from each of them.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Inventory Slots | Fabric | 1.21.4 – 26.2 | Client-side only | 2026-06-27 |
| Lwib | Fabric | 1.21.10 – 26.2 | Client-side only | 2026-08-25 |
| Better Health | Fabric | 1.21.11 – 26.1.2 | Client-side only | 2026-05-18 |
| Slot Lock | Fabric | 1.21.11 – 26.1 | Client-side only | 2026-03-31 |
Questions
Does Inventory Slots need Fabric API?
Does the server need Inventory Slots?
Which game versions have files?
In the catalog
Inventory Slots is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 13,894 mods support Minecraft 26.2.
Similar mods
What the author says
InventorySlots is a lightweight Fabric mod designed for developers and UI configurators. It provides a client-side overlay for inventory slots, making it easier to visualize slot indices and debug layout positioning in real-time.
Official listing
- Modrinth page
- modrinth.com/mod/inventory-slots
- Owner
- BitByLogic
- Published
- 2025-07-28
- Updated on Modrinth
- 2026-06-27
- Facts verified
- 2026-10-15