
NBT Tooltip
Shows items' NBT data in their tooltip
About this Mod
A little map dev/mod dev utility to help people working with nbt items and tiles.
To see an Item NBT tag just activate the advanced tooltips by pressing F3+H, the tag will appear inside the tooltip. Longer tags will be presented in an auto scrolling view, the scroll speed can be controlled with SHIFT, to pause scrolling, and ALT, to speed it up. The default scrolling speed and the maximum number of tag lines shown at once can be configured.
More toggling options are available in the config menu.
Keybinds to copy the NBT tag to your system clipboard are configurable in the "controls" settings.
Multiple presentation formats are available both for tooltips (default: custom human readable and color coded format) and for copying (default: json), all configurable.
Using ModMenu to edit configuration files is highly suggested.
Other Info
Some servers might consider this mod cheating, check with your server admin if it's fine to install this on your client.
You are free to use this mod on whatever pack you desire
Screenshots
Default view:
Non-colored version:
Json view:
Available Versions
How to Install NBT 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 (1.21.4).
Install Mod
Open the mod browser in the dashboard and search for "NBT Tooltip". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.4, 1.21.3, 1.21.2 (+30 more)
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
NBT 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 (1.21.4). You can switch loaders with one click in the panel.
Is NBT Tooltip compatible with fabric?
NBT Tooltip officially supports fabric for Minecraft 1.21.4, 1.21.3, 1.21.2. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with NBT Tooltip – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if NBT 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.
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