UUID-named DAT files
Open the individual .dat file associated with the player you intend to inspect.
Java Edition player files
Inspect Minecraft playerdata in a typed NBT tree.
Open a UUID-named .dat file from a Java Edition world's playerdata folder, review nested tags, stage careful edits, and export a separate copy.
Files are parsed and rebuilt locally in your browser. Nothing is uploaded to Chunkweave.
Understand the file first
Playerdata is more than a list of simple values.
A player file may contain nested compounds, lists, inventory data, coordinates, status values, and version-specific fields. Chunkweave shows the raw typed structure so you can see exactly where a value lives before changing it.
Nested data paths
Follow compounds and lists instead of editing a flattened or lossy representation.
Visible change tracking
Review staged values and original content before saving the complete batch into a new copy.
Do not replace live server data.
A running server can write its in-memory player state back to disk and overwrite manual changes. Stop the server safely, retain the original file, and test the edited copy in a controlled environment.
Common questions
Frequently asked questions
Where are Java Edition playerdata files stored?
They are normally stored as UUID-named .dat files inside a world's playerdata folder. Server layouts and backups may place copies elsewhere.
Can Chunkweave edit playerdata .dat files?
Yes. Chunkweave can open Java Edition playerdata .dat files as typed NBT trees, stage changes, and export a separate copy locally.
Can I edit a player while they are online on a server?
You should not. Stop the server or ensure the player data is not active, make a backup, and follow the server's safe maintenance procedure before replacing a file.
Does Chunkweave know whether every changed value is safe?
No. The editor preserves NBT types and structure, but it cannot guarantee that a value is valid for your Minecraft version, server, datapacks, or mods.
Ready when your file is
Open the NBT editorInspect the structure before you change it.
Open a supported Minecraft Java Edition file, stage edits, and export a separate copy without sending world data to a server.