Bedrock NBT Editor

Overview

Bedrock NBT Editor is a browser tool for inspecting, editing, and converting Minecraft Bedrock and Java Edition NBT data. It suits players and server operators who need to make targeted changes across world files without installing a desktop editor. Its local processing and broad format support make it a practical free choice, provided iOS users are prepared to move files into the Files app first.

Key features

The editor accepts level.dat, .dat, .nbt, .mcstructure, .schem, and .schematic files, as well as extracted chunk payloads and packet dumps. It detects byte order, headers, and compression across five NBT encodings automatically. That takes format guesswork out of routine work and makes the tool useful across Bedrock and Java data, though its focus is structured NBT rather than broader world-map editing.

Tag search, value editing, and adding or removing tags cover the main editing jobs. Changes can be downloaded, or the edited tree can be exported as SNBT text when a text representation is more useful. The editor can read Bedrock files and write Java big-endian gzip format, and convert in the other direction, which is a clear advantage for moving data between editions.

Large files get typed arrays and lazy tree rendering, which displays 200 entries at a time to help keep the interface responsive. TAG_Long values use BigInt, preserving 64-bit values such as world seeds and UUID halves. Those safeguards matter when a mistaken conversion or truncated number could compromise an edit.

Files are parsed locally in the browser, with no upload endpoint, and the editor continues working after the page has loaded if the device goes offline. That combination suits private or unreliable-network workflows. The browser page also exposes its parser and writer through window.NBT, giving technically inclined users a way to use the engine from the console or a userscript. The editor is open source under the MIT license; its maker says it is not affiliated with Mojang Studios or Microsoft.

Pricing

Bedrock NBT Editor is free at no cost. The Free plan has no paid tier, requires no sign-up, and has no upload quota; there is no free trial because there is no paid plan to trial. That removes cost and account friction for occasional edits as well as regular use, with no quota forcing users to ration files.

Platforms

The editor runs on the web and supports Android and iOS devices. Android users can select a world file from a file manager, while iOS users need to put the file in the Files app before opening it. That extra step makes the mobile workflow less direct on iOS. Once loaded, the page works offline, which is useful when editing away from a reliable connection.

Compatibility includes Java and Bedrock server software such as Paper, Fabric, Forge, PocketMine-MP, Nukkit, and Bedrock Dedicated Server. This is a good fit for operators handling data across those environments, while the editor's central job remains NBT editing and conversion.

Who it's for

Choose Bedrock NBT Editor if you need a free way to inspect or change Minecraft world data in a browser, especially when you work across Bedrock and Java formats or want files to stay on your device. Its format detection, tag tools, SNBT export, and conversion cover a substantial range of targeted NBT tasks. It is less suitable if you want a broader world-editing environment or need to open files on iOS without first preparing them in Files.

Pros and cons

• Pros: Local parsing with no upload endpoint keeps files on the device, and offline operation helps when the network drops after the page loads.
• Pros: Automatic detection across five NBT encodings and conversion in both Bedrock-to-Java directions reduce manual format work.
• Pros: BigInt handling preserves 64-bit values, while lazy rendering limits the displayed tree to 200 entries at a time for large files.
• Cons: iOS users must place files in the Files app before selecting them, adding a preparation step to mobile editing.
• Cons: Its tools center on NBT data, so users seeking broader world editing should consider another kind of editor.

Alternatives

Minecraft World Editors is the broader category to browse when you want to compare world-editing tools beyond a focused NBT editor.

MCBE Inventory Editor is another free option, with Linux, macOS, Windows, web, and self-hosted platforms. Consider it if those environments suit your setup better.

Chunker is a free, open-source option for Linux, macOS, Windows, and web. Its MIT license and GitHub-hosted code may appeal if open-source availability is a deciding factor.

biomed is free MIT-licensed software for Linux, macOS, and Windows, making it an alternative for desktop users who prefer those platforms.

LiveNBTEditor is a free MIT-licensed option for Minecraft Java 26.3, with a Windows editor required. Choose it if that version-specific setup matches your needs.

MCA JSON offers free open-source command-line tools and a JavaScript library for MCA/Anvil and NBT files. It suits users who prefer those interfaces to a browser editor.

MCA Selector is free under the MIT License, with downloadable Windows, macOS, Linux, and universal JAR builds. It is an option for users who want a downloadable desktop build.

McpeTool is free MIT-licensed software available for API, Linux, macOS, self-hosted, and Windows use.

Minecraft Region Fixer is free GPL-3.0 software for Linux, macOS, and Windows that requires Python 3.x.

Verdict

Bedrock NBT Editor is the right pick for players and server operators who want a free, browser-based way to edit and convert Bedrock and Java NBT files while keeping parsing local. Its wide format support and careful handling of large files and 64-bit values make it more capable than a basic tag viewer. Look elsewhere if you need broader world editing, or if the iOS Files-app step is a deal-breaker.