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Chunkweave NBT Editor
What it is
Chunkweave NBT Editor is a free browser editor for structured data from Minecraft Java Edition. It displays NBT data as a typed tree, where users can search nested tags and change typed values. Supported files include .nbt, .dat, .mca, .mcr, and .schematic, including level.dat, playerdata, and other compressed NBT containers. For structure files, the editor can show structure blocks, entities, palettes, and metadata. Anvil region files display a 32×32 map of populated chunks before a user opens a chunk's NBT. Parsing and rebuilding happen in a browser Web Worker. Chunkweave says opened world files are not uploaded, stored, or received by the service. Edits are rebuilt locally and downloaded as a separate file, leaving the original untouched; undo and redo controls are available before download. The editor requires no account or payment and has no cloud storage. It is intended for local manual inspection and editing, not API automation. It runs on the web and does not offer a Windows, macOS, or Linux desktop installer.
For and against
For
- Supports five listed Minecraft file formats.
- Anvil regions show populated chunks on a 32×32 map.
- Files are processed locally in a browser Web Worker.
- Edits download separately, leaving the original untouched.
- Free, with no account or payment required.
Against
- It is browser-based and has no desktop installer.
- It is not an automation API.
- Terrain editing is not supported.
The verdict
Chunkweave provides local browser editing for Minecraft Java Edition NBT data, with separate-copy downloads and undo and redo controls. It is intended for manual work and does not provide a desktop installer.
Who it suits
Chunkweave suits Minecraft Java Edition players, map makers, server administrators, and technical creators who need to inspect or edit NBT files in a browser.
Plans and prices
Free
Browser-based editor · no account, payment, or cloud storage · supports Java Edition .nbt, .dat, .mca, .mcr, and .schematic files
Read 5 Oct 2026 · nbteditor.org
On the record
- Audience
- The maker describes it as intended for players, map makers, server administrators, and technical creators.nbteditor.org · read 5 Oct 2026
- Integrations and automation
- The maker describes the product as for local manual inspection and editing, and says it is not an automation API.nbteditor.org · read 5 Oct 2026
- Local processing
- The editor parses and rebuilds files in a browser Web Worker; the maker says opened world files are not uploaded, stored, or received by Chunkweave.nbteditor.org · read 5 Oct 2026
- Platform limit
- Chunkweave is browser-based and does not offer a Windows, macOS, or Linux desktop installer.nbteditor.org · read 5 Oct 2026
- Privacy details
- The privacy policy says Railway may process request logs, Google Analytics runs only after analytics-cookie consent, and the site loads fonts from Google Fonts.nbteditor.org · read 5 Oct 2026
- Purpose
- Chunkweave edits structured Minecraft Java Edition data in a browser.nbteditor.org · read 5 Oct 2026
- Region browsing
- For Anvil regions, it shows populated chunks on a 32×32 map before opening their NBT.nbteditor.org · read 5 Oct 2026
- Separate-copy export
- Edits are rebuilt locally and downloaded as a separate file, leaving the original untouched.nbteditor.org · read 5 Oct 2026
- Structures
- For structure files, it can inspect structure blocks, entities, palettes, and metadata.nbteditor.org · read 5 Oct 2026
- Support
- The maker lists email contact for privacy, support, and product questions.nbteditor.org · read 5 Oct 2026
- Supported files
- It supports .nbt, .dat, .mca, .mcr, and .schematic files.nbteditor.org · read 5 Oct 2026
- Typed tree editing
- The editor presents NBT data as a typed, editable tree and supports searching nested tags and changing typed values.nbteditor.org · read 5 Oct 2026
- Undo and redo
- The workspace includes undo and redo controls before download.nbteditor.org · read 5 Oct 2026
- World and player data
- It can edit level.dat, playerdata, and other compressed NBT containers.nbteditor.org · read 5 Oct 2026
