Shaper
A support API for loading and exporting JSON voxel shapes for hitboxes
About this Mod
Shaper – Support Tool for Voxel Shape Exporting
Shaper is a support API for modders to define, load, and export voxel shapes (hitboxes) efficiently.
You can either use the Blockbench integration (via the Shaper plugin) to export shapes directly, or write your own hitbox JSON files by hand. More details can be found in the wiki.
Shaper supports Fabric, Forge, and Quilt.
Key Features
| Feature | Description |
|---|---|
| Blockbench Integration | Export hitboxes directly from Blockbench using the Shaper plugin. |
| Manual JSON Support | Write hitboxes manually in JSON format (see wiki for examples). |
| Voxel Shape Export | Uses flat JSON lists for easy editing and reuse. |
| Support Tool | Simplifies and speeds up hitbox creation for developers. |
| Extensible & Modular | Fully compatible with Fabric, Forge, and Quilt modding pipelines. |
Available Versions
How to Install Shaper on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "Shaper". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1, 1.21, 1.20.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Shaper server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is Shaper compatible with fabric and forge and neoforge and quilt?
Shaper officially supports fabric, forge, neoforge, quilt for Minecraft 1.21.1, 1.21, 1.20.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Shaper – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Shaper consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install Shaper with just one click on your server.