Amulet Map Editor vs Bedrock NBT Editor

Amulet Map Editor modifies Minecraft world saves and converts worlds, including between Java and Bedrock when both can be opened. It can repair corrupt areas, move or copy builds, fill or replace blocks, delete chunks, and import or export structure formats. It supports Java releases from 1.12 and Bedrock releases from 1.7, but not snapshots, beta releases, or previews. Supported formats include Java and Bedrock saves and the Amulet construction format, which stores chunk data for both editions, allows multiple selection boxes, and keeps sub-chunks individually. Amulet is written in Python 3 and provides an API for world-data changes and custom operations. It runs on Windows, macOS, and Linux. The maker recommends copying worlds before editing. Bedrock Marketplace worlds cannot be opened, and entities and items are unsupported except during conversion within the same platform; entities should remain in place. Version 0.10.44 is the last free release and cannot open worlds from newer game versions. Paid plans provide compiled builds for one year and a perpetual license to use Amulet-Team software released within one year after purchase.

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.