NBT Generator

Generate valid Minecraft NBT data blocks from structured inputs, designed for developers, datapack authors, and Minecraft modders who manipulate world data.

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1,328+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

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About This Tool

The NBT Generator converts typed inputs into a valid Minecraft NBT payload. It supports primitive types (byte, short, int, long, float, double, string) and complex types (arrays, lists, compounds). Users define names, select types, and provide values; the tool validates ranges, escapes strings, and builds nested structures when needed.

Conceptually, the tool treats the NBT payload as a tree of tagged values. It recursively assembles compounds and lists, ensuring deterministic ordering to ease diffs across runs. The output is a human-readable NBT string suitable for paste into commands, datapacks, or world save data.

Who benefits? Developers, modders, map builders, and server operators who require repeatable datum for testing, automation, or scripted world changes. Unique value lies in type-aware validation, nested structure support, and an export path for pipelines. Core features include input validation, nested structure generation, and clear export options.

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How to Use

Provide inputs: enter tag_type, name, and value with correct types.
Choose structure: select primitive, list, or compound as needed.
Generate: run to produce the NBT textual payload.
Review outputs: copy payload and verify formatting against Minecraft expectations.
Apply: paste into data files, commands, or datapack definitions.

Frequently Asked Questions

Find Quick Answers

What NBT types are supported?

The generator supports primitive types such as byte, short, int, long, float, double, and string, plus complex types like arrays (byte[], int[], long[]) and container types (List and Compound) for nested structures. It validates each type during input mapping.

Can I export to JSON?

The primary output is an NBT text representation suitable for Minecraft data files and commands. JSON export is not built-in; you can convert using external tooling if your workflow requires JSON, but native JSON formatting is not guaranteed to preserve NBT semantics.

Is the tool free to use?

Yes. The NBT Generator is provided as a no-cost web-based tool for the Minecraft community, intended to aid modders, datapack authors, and server operators in producing valid payloads.

How do I validate the generated NBT?

Test the generated NBT in Minecraft commands, datapacks, or tools that parse NBT structures. Cross-check nested compounds and lists for correct typing and ordering; use external validators if available to ensure compatibility with your target version.

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