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SPECIFICTION
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Bedrock NBT Editor

w1zardz.github.io

Free plan WebiOSAndroid
Visit w1zardz.github.io
Spec score 8.2 #6 of 35 in Minecraft World Editors

What it is

Bedrock NBT Editor is a free browser-based tool for editing Minecraft Bedrock Edition and Java Edition NBT files. It accepts files such as level.dat, playerdata, .nbt, .mcstructure, .schem, and .schematic, and detects byte order, headers, and compression across five NBT encodings. Users can search tags, add or remove them, change values, and download the edited file. The editor can also export the tree as SNBT text and convert between Bedrock files and Java big-endian gzip format. For large files, typed arrays and lazy rendering display 200 entries at a time; BigInt preserves 64-bit TAG_Long values such as world seeds and UUID halves. Files are parsed locally, with no upload endpoint, and the editor continues to work offline after the page loads. Android users can choose a world file from a file manager; iOS users must first put it in the Files app. The project is open source under the MIT license. The maker says it is not affiliated with Mojang Studios or Microsoft.

Spec sheet

Purpose
Edits Minecraft Bedrock Edition and Java Edition NBT files in a browser.Read 11 Oct 2026 · w1zardz.github.io
Privacy
Files are read and parsed locally in the browser, and the page states that no upload endpoint exists.Read 11 Oct 2026 · w1zardz.github.io
License
The editor is open source under the MIT license.Read 11 Oct 2026 · github.com
Affiliation
The maker states that the editor is not affiliated with Mojang Studios or Microsoft.Read 11 Oct 2026 · w1zardz.github.io
Compatibility
The page lists support for Java and Bedrock server software, including Paper, Fabric, Forge, PocketMine-MP, Nukkit, and Bedrock Dedicated Server.Read 11 Oct 2026 · w1zardz.github.io
Editing
Users can search tags, add or remove tags, edit values, and save the result for download.Read 11 Oct 2026 · w1zardz.github.io
File types
It accepts files including level.dat, playerdata, .nbt, .mcstructure, .schem, and .schematic.Read 11 Oct 2026 · w1zardz.github.io
Format conversion
It can read Bedrock files and write Java big-endian gzip format, or convert in the reverse direction.Read 11 Oct 2026 · w1zardz.github.io
Format detection
It detects byte order, headers, and compression automatically across five NBT encodings.Read 11 Oct 2026 · w1zardz.github.io
Large files
Typed arrays and lazy tree rendering display 200 entries at a time to keep large files responsive.Read 11 Oct 2026 · w1zardz.github.io
Long values
TAG_Long values use BigInt to preserve 64-bit values such as world seeds and UUID halves.Read 11 Oct 2026 · w1zardz.github.io
Mobile support
The maker says Android users can choose a world file from a file manager, while iOS users must first place it in the Files app.Read 11 Oct 2026 · w1zardz.github.io
Offline use
The editor continues to work after the page loads if the device disconnects from the network.Read 11 Oct 2026 · w1zardz.github.io
Scriptable engine
The page exposes its parser and writer through window.NBT for use in the browser console or a userscript.Read 11 Oct 2026 · w1zardz.github.io
SNBT export
The editor can export the edited tree as SNBT text.Read 11 Oct 2026 · w1zardz.github.io

Plans and prices

Free Free No paid tier · no sign-up · no upload quota Read 11 Oct 2026 · w1zardz.github.io

Every Bedrock NBT Editor plan and price →

Strong points and limits

Strong points

  • Free, with no sign-up or upload quota.
  • Reads and writes both Minecraft editions’ formats.
  • Parses files locally; no upload endpoint exists.
  • Continues working offline after the page loads.
  • Open source under the MIT license.

Limits

  • iOS users must first place files in Files.
  • Android and iOS are listed alongside web, not desktop apps.

Who it suits

It suits Minecraft players or server administrators who need to inspect or edit NBT files in a browser, including users working with either Bedrock or Java files. It also offers a browser-console or userscript interface to its parser and writer.

Verdict

The editor lays out supported files, conversions, local processing, and mobile file-selection requirements. Its zero-cost plan and offline behavior are clear, while iOS users have an extra preparation step.

Where Specifiction places it

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