Screenshots
About this Mod
NBT Viewer
Usage
There is a configurable key bind - Right ALT by default - which opens the
NBT Viewer GUI.
Inside the GUI, there will be key-value pairs for each element of the data.
For Lists, the index in the list is the key.
Object keys are sorted by name.
Changelog
Version 3.0.0
- Ported to 1.20.1
- All elements are represented by a button. For types other than lists and objects, this button does nothing and is
purely decorative.
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 (1.20.1).
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
1.20.1, 22w06a, 22w05a (+5 more)
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 (1.20.1). You can switch loaders with one click in the panel.
Is NBT Viewer compatible with fabric?
NBT Viewer officially supports fabric for Minecraft 1.20.1, 22w06a, 22w05a. 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.
Rent Modded Server
Install NBT Viewer with just one click on your server.