NBT Viewer
A helpful tool for data pack creators
Screenshots

About this Mod
A mod that shows you an item's nbt data in its lore. It is colorized like in the chat when you use /data get, and it has linebreaks with indentation.
You can toggle with keyboard shortcuts if the nbt is visible or if the indentation and linebreaks should be applied. They are unassigned by default.
Available Versions
How to Install NBT Viewer 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 (1.20.4).
Install Mod
Open the mod browser in the dashboard and search for "NBT Viewer". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.4
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
NBT Viewer 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 (1.20.4). You can switch loaders with one click in the panel.
Is NBT Viewer compatible with fabric?
NBT Viewer officially supports fabric for Minecraft 1.20.4. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with NBT Viewer – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if NBT Viewer 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.
Similar Mods
Rent Modded Server
Install NBT Viewer with just one click on your server.
Details
- License
- Creative Commons Attribution Non Commercial 4.0 International
- Server-side
- Unsupported