Bedrock NBT Editor vs Bedrock Toolchest

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.

Bedrock Toolchest is a free desktop editor for Minecraft Bedrock worlds. Its Level Editor changes world settings, all 31 game rules, superflat layers and experiments. The Player Editor covers position, health, experience, inventory, enchantments, effects and tamed pets, and can export a player to a file. A world map supports chunk pruning and editing entities, chests, signs and villager trades. The Structure Viewer renders saved structures in 3D and imports or exports .mcstructure files; add-on management can install, remove, reorder and update packs and flag missing packs or unmet dependencies. The app works with Bedrock worlds from version 1.21 through the current release, including world folders, extracted .mcworld worlds and .mcstructure files, but not Java Edition worlds. It supports 64-bit Windows 10 or later and 64-bit x86 Linux desktops; ARM machines are unsupported. Changes are staged until saved, and a backup is made before the first save in a session by default. The app does not require an internet connection.