SlotID Tooltip

A simple client-side Fabric mod that displays the slot ID in tooltips when hovering over inventory slots.

177 Downloads

fabricstorageutility

Rent Server with this Mod

About this Mod

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SlotID Tooltip

A simple client-side Fabric mod that displays the slot ID in tooltips when hovering over inventory slots.

Usage

Simply hover over any inventory slot (empty or containing an item) to see its slot ID displayed in the tooltip.

This is particularly useful in servers with custom GUI textures where its difficult to indentify individual slots.

Also works in the Creative mode inventory menu.

Available Versions

SlotID Tooltip 1.21.1-1.21.11+v1.0.2release

MC 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11fabric

February 24, 2026

SlotID Tooltip v1.0.1+1.21.1-1.21.10release

MC 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10fabric

December 24, 2025

How to Install SlotID Tooltip on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).

Install Mod

Open the mod browser in the dashboard and search for "SlotID Tooltip". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11, 1.21.10, 1.21.9 (+8 more)

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

SlotID Tooltip server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.

Is SlotID Tooltip compatible with fabric?

SlotID Tooltip officially supports fabric for Minecraft 1.21.11, 1.21.10, 1.21.9. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with SlotID Tooltip – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if SlotID Tooltip consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.