Instead of MCA JSON
MCA JSON alternatives
MCA JSON is for working with Minecraft Java Edition world data through command-line tools or a TypeScript library. It converts MCA and NBT files to JSON and back, can list chunks, find signs, remove chunks, and read player locations, and supports editing MCA, NBT, and SNBT data. The library can run in Node.js 20 or newer and can be bundled for browsers; installation is available through npm and other package managers. It reads several compression types and files across a broad range of Minecraft versions.
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Chunker
Free plan Open source APILinuxMac+2Converting worlds between Java and Bedrock — Chunker converts entire worlds between Java and Bedrock, while MCA JSON works with Java MCA and NBT files and JSON.
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MCA Selector
Free plan LinuxMacWindowsSelecting, importing, and editing Java chunks — MCA Selector adds visual chunk selection, filtering, import, and full NBT editing instead of MCA JSON's conversion-oriented tools and library.
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MCBE Inventory Editor
Free plan Open source LinuxMacSelf-hosted+2Editing Bedrock player inventories and data — MCBE Inventory Editor focuses on Bedrock player data and adds inventory transfers and backups, while MCA JSON handles Java MCA, NBT, and SNBT files.
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Minecraft World Trimmer
Free plan LinuxMacWindowsTrimming unused world regions — Minecraft World Trimmer deletes low-usage regions to save storage, while MCA JSON converts and modifies Java world data.
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Bedrock NBT Editor
Free plan AndroidiPhoneWebEditing and converting NBT in a browser — Bedrock NBT Editor edits NBT in a browser across Bedrock and Java formats, while MCA JSON adds MCA tools and a TypeScript library.
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Bedrock Toolchest
Free plan LinuxWindowsEditing Bedrock worlds on desktop — Bedrock Toolchest adds Bedrock world, player, structure, and add-on editors, while MCA JSON works with Java formats.
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biomed
Free plan LinuxMacWindowsPainting biomes on a world map — biomed provides map-based biome painting and snow or ice correction, while MCA JSON offers file conversion and broader MCA and NBT editing.
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Minecraft Region Fixer
Free plan Open source LinuxMacSelf-hosted+1 - 9
8Crafter's Bedrock World Editor
Free plan LinuxMacWindows - 10
LiveNBTEditor
Free plan APILinuxWindows - 11
McpeTool
Free plan APILinuxMac+2 - 12
BedrockMap
Free plan Windows - 13
Dovetail
Free plan APIWeb - 14
Minecraft NBT Editor
Free plan LinuxMacWindows - 15
Blocktopograph
Free plan AndroidWindows - 16
Chunkweave NBT Editor
Free plan Web - 17
mc-nbt
Free plan APILinux - 18
NBTExplorer
Free plan LinuxMacWindows - 19
ChunkCleaner
Free plan LinuxWindows - 20
MCWorldTools Single Player Editor
Free plan Web - 21
WorldPainter
Free plan LinuxMacWindows - 22
Dovetail
Free plan Web - 23
Voxelier
Free plan WebWindows - 24
Mcgic Minecraft DAT Editor
Free plan Web
Its scope is still specific: it does not support Bedrock Edition, and it cannot read chunks over 1 MiB stored in separate .mcc files or chunks using custom compression. Large JSON output can also be unwieldy; an example mostly untouched region produced about 1 gigabyte. Consider whether you need conversion, selective chunk or player-data editing, Bedrock support, or a visual editor, and check the target format and platform before switching. The alternatives range from world conversion and chunk management to focused Bedrock editing.