Skip to content


Subversion checkout URL

You can clone with
Download ZIP
NBT.js – a JavaScript parser for NBT archives
Branch: master

Merge pull request #9 from deathcap/int64

Use node-int64 for 64-bit long integers. Closes GH-1
latest commit df0c2b3edd
@sjmulder authored

NBT.js Build Status

by Sijmen Mulder.

NBT.js is a JavaScript parser NBT archives, for use with Node.js.


After var nbt = require('nbt'), you can use nbt.parse(data, callback) to convert NBT data into a regular JavaScript object.

var fs = require('fs'),
    nbt = require('nbt');

fs.readFile('bigtest.nbt', function(error, data) {
    if (error) throw error;

    nbt.parse(data, function(error, result) {
        console.log(result.Level['nested compound test']);

If the data is gzipped, it is automatically decompressed first.

Tag names are copied verbatim, and as some names are not valid JavaScript names, use of the indexer may be required – such as with the nested compound test in the example above.

Development and testing

Grunt is used as a task runner:

grunt jshint  # Check code quality
grunt test    # Run tests
grunt watch   # Do the above two on every file change

Known issues


I, the copyright holder of this work, hereby release it into the public domain. This applies worldwide.

In case this is not legally possible: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Something went wrong with that request. Please try again.