What is the SCHEMATIC file format?
A .schematic file is used by MCEdit and other Minecraft editor programs, including WorldEdit. The format allows editors to create and edit 3D structures, map sections, terrain, and related block objects that can be imported and exported between worlds. A .schematic associated with a specific build can be placed into a game world using the MCEdit selection tool or WorldEdit's //schematic load command.
Internally, the format stores a gzip-compressed NBT byte array of block IDs arranged in YZX order. It relies on legacy numeric block IDs predating Minecraft 1.13, so it cannot represent newer blocks without remapping. Modern editors now prefer the Sponge Schematic .schem format for current Java Edition builds.
Security & safety
RISK: LOWA .schematic is passive block data, not executable code, so opening one is low-risk. The realistic concern is gameplay/world integrity: pasting a downloaded build with WorldEdit overwrites whatever is in the target area, so always back up your world (or test on a copy) before importing. Schematics with command-block contents could run commands when triggered in-game - inspect downloads from untrusted sources. Watch for fake "schematic download" pages that wrap files in PUP installers; get builds from reputable community sites and download the .schematic directly.
Format details
in a nutshellFULL NAMEMinecraft Schematic Fileaka MCEdit Schematic, WorldEdit schematic (legacy)
DEVELOPERMinecraft community (MCEdit / WorldEdit); not an official Mojang formatsince around 2011 (MCEdit; format loosely based on Minecraft's Indev level format)
CATEGORYGame Files
MIME TYPEapplication/octet-stream
TYPEGzip-compressed NBT (Named Binary Tag) data describing a 3D block region
STANDARDOpen · royalty-free
This extension is also used by…
- Generic NBT data file - Some non-Minecraft tools have reused .schematic for gzip-NBT block data; the structure is the same NBT container.
MAGIC BYTES · FILE SIGNATURE
OFFSET
000102
HEX
1F8B08
ASCII
···
A .schematic is GZIP-compressed NBT, so the file starts with the gzip magic 1F 8B 08 at offset 0 (identical to any .gz). After decompression the NBT root is a TAG_Compound named "Schematic" containing Width/Height/Length (TAG_Short), a Materials tag, and Blocks/Data byte arrays. A minority of tools save NBT uncompressed (then it starts with 0x0A, the NBT TAG_Compound byte) - rare for .schematic.
Programs that open SCHEMATIC files
Windows4 apps
WorldEdit (Minecraft mod/plugin)
Open-source Place the file in the worldedit/schematics folder, then in-game run //schematic load <name> and //paste. The standard way to import a schematic.
Amulet Editor
Open-source Open your world, then Import the .schematic to place/edit the structure. Modern, maintained successor to MCEdit.
MCEdit / MCEdit-Unified
Open-source Open a world and use Import to load the .schematic; the original schematic editor (now largely legacy/unmaintained).
Litematica (Fabric mod)
Open-source Load the .schematic as a ghost overlay to use as a build guide (can convert to .litematic). Modern alternative to Schematica. 
macOS2 apps
WorldEdit (server/mod)
Open-source Same //schematic load + //paste workflow on a Mac client or server. 
Linux2 apps
WorldEdit (server plugin)
Open-source Drop into plugins/WorldEdit/schematics on a Spigot/Paper server, then //schematic load and //paste.
Web1 app
SchemConvert / online schematic viewers
Open-source Use to convert .schematic to/from .schem/.litematic/.nbt; browser viewers (e.g. on map sites) preview the build. Technical details
deep spec| Compression | GZIP (DEFLATE) wrapping the NBT payload; magic bytes `1F 8B 08` at offset 0 |
| Internal encoding | NBT (Named Binary Tag) - big-endian binary with typed tag tree |
| Root structure | TAG_Compound named `Schematic` containing `Width`, `Height`, `Length` (TAG_Short), `Materials`, `Blocks`, and `Data` tags |
| Block storage order | YZX - `Blocks[y * Width * Length + z * Width + x]` |
| Block ID system | Legacy numeric block IDs (0-255) with 4-bit metadata values; pre-Minecraft 1.13 flattening |
| Dimension limits | Width, Height, Length stored as TAG_Short; maximum 32,767 blocks per axis |
| Byte order | Big-endian for all multi-byte NBT numeric values |
| Entity data | Optional `Entities` and `TileEntities` TAG_List entries store mobs and block entities within the region |
| Integrity check | GZIP CRC-32 over the compressed stream; no additional content signature |
| MIME type | `application/octet-stream` (no format-specific MIME type is registered for `.schematic`) |
| Platform scope | Java Edition only; legacy numeric IDs are incompatible with Bedrock Edition, which uses `.mcstructure` |
| Superseded by | Sponge Schematic `.schem` (2018), which uses namespaced block-state palettes and supports post-1.13 blocks |
| Typical file size | A few KB to tens of MB, scaling with the bounding-box volume of included blocks |
| Materials tag | `Materials` TAG_String identifies the block ID set (`Classic`, `Alpha`, or `Pocket`) used in the region |
| Released | around 2011 (MCEdit; format loosely based on Minecraft's Indev level format) |
| Latest version | Legacy numeric-block-ID format; superseded by the Sponge .schem format (2018) and Litematica .litematic |
| Open standard | Yes · royalty-free |
| Specification | minecraft.wiki |
SCHEMATIC conversions
Possible
.SCHEMATIC .SCHEMGUIDE
Yes -- load the .schematic in WorldEdit or FastAsyncWorldEdit and save it with the Sponge format flag; that…
How to convert
.SCHEMATIC .LITEMATICGUIDE
Yes - the fastest way is SchemConvert, which converts .schematic to .litematic directly without launching…
How to convert
.SCHEMATIC .NBTGUIDE
Yes, conversion is possible -- Amulet or SchemConvert can export a .schematic as a vanilla .nbt structure…
How to convert
Not possible
Community Q&A
asked by usersNo questions yet - be the first to ask about SCHEMATIC files.
Frequently asked questions
How do I open a .schematic file in Minecraft?
You import it, not open it. On a server with WorldEdit, put the file in worldedit/schematics, then run
//schematic load <name> and //paste. Standalone, use the Amulet (or MCEdit) world editor to import it into a world.What's the difference between .schematic and .schem?
.schematic is the legacy MCEdit/WorldEdit format using pre-1.13 NUMERIC block IDs. .schem (Sponge format, 2018) uses modern namespaced block states and a palette, so it supports newer blocks. Current WorldEdit prefers .schem.
How do I convert a .schematic to .schem?
Load it in WorldEdit/FastAsyncWorldEdit and save with
//schematic save -f sponge, or use Amulet or the SchemConvert tool. This is needed when an old schematic must work with modern blocks.Can I use a .schematic in Minecraft Bedrock?
Not directly - .schematic is a Java-Edition format. Bedrock uses .mcstructure. You'd need to convert via tools like Amulet, and results can be imperfect because the editions store blocks differently.
What program opens a .schematic without a server?
The Amulet world editor (maintained) or MCEdit-Unified - open a world and Import the file. To use it as a build guide while playing, the Litematica mod loads .schematic as a ghost overlay.
Why won't my old .schematic show the right blocks?
Legacy .schematic uses numeric block IDs from before Minecraft 1.13. Newer blocks didn't exist then, and ID meanings changed, so loading an old schematic in a modern version can misplace blocks unless the tool remaps them.
References
1Minecraft Wiki - Schematic file formatminecraft.wiki
2WorldEdit (EngineHub) - schematicsworldedit.enginehub.org
