StructSaver
StructSaver is a Fabric mod for Minecraft 1.21.5 that allows you to save, manage and place structures directly in-game.
Whether you're building cities, redstone contraptions or decorative builds, StructSaver provides an easy way to create reusable structure templates with visual placement previews.
Features
Selection
- Select areas using a wooden hoe
- Two-click corner selection
- Optional single-block selection mode
- Colored selection outlines (8 presets)
- Multiplayer synchronization
- Ghost-block preview of selected structures
Structure Library
- Save structures with custom names
- JSON-based storage format
- Searchable structure library
- Creation date display
- Rename structures
- Delete structures with confirmation dialog
- Overwrite warning for existing structures
Placement
- Real-time ghost preview
- Green preview = valid placement
- Red preview = blocked placement
- Placement centered on the targeted block
- Rotation support
- Mirroring support
- Easy right-click placement
NBT Support
- Export structures as Minecraft
.nbtfiles - Import existing
.nbtstructures - Share structures between worlds and computers
Settings
- Open settings with F6
- Toggle area and single-block selection
- Change selection outline colors
- Mod Menu integration
Multiplayer Support
StructSaver is designed to work in multiplayer.
- Server-side structure storage
- Client-side rendering
- Network synchronization for save, load, rename, delete, preview and placement
Requirements
- Minecraft 1.21.5
- Fabric Loader
- Fabric API
- Java 25
Controls
| Key | Action |
|---|---|
| R | Rotate clockwise |
| T | Rotate counter-clockwise |
| F | Mirror X-axis |
| G | Mirror Z-axis |
| F6 | Open settings |
Notes
- Placement is restricted to Creative and Spectator mode.
- Supports Minecraft's standard NBT structure format.
