MineSchematic vs SchemViewer

MineSchematic is a free web community for finding and sharing Minecraft schematics. Its library includes redstone builds, farms, houses, storage, and megabuilds, with browser-based 3D previews that let users inspect a build layer by layer. Downloads are available as .litematic, .schem, and .nbt files, compatible with tools including Litematica, WorldEdit, FastAsyncWorldEdit, Sponge, and vanilla structure blocks. Browser tools include schematic conversion, shape generation, pixel art, command generation, and calculators. The converter reads and writes the three supported formats while preserving block states. Files used in the tools are processed locally in the browser and, the site says, are not uploaded to a server. An account is required to upload content, but not to download schematics or use the tools. The service is made by an independent developer in the United Kingdom and is intended for users aged 13 or older. The site says it is not an official Minecraft product and is not associated with Mojang or Microsoft.

SchemViewer is a free browser-based 3D viewer for Minecraft .litematic schematic files. It uses the Deepslate WebGL engine for interactive viewing, with controls to rotate, zoom and pan. A Y-axis slicer changes the visible height to inspect schematic layers, while region controls show or hide individual subregions and their bounding boxes. The searchable materials checklist supports filtering and checking off blocks. Technical mode switches between default Minecraft textures and customized technical textures. Users can export block lists and metadata as CSV or JSON; the placement workflow is export-only. The maker says files are processed offline in the browser and are not uploaded to a server. A Canvas 2D renderer provides a fallback to the WebGL viewer. The listed format is .litematic, and listed platforms include web, Linux, macOS and Windows. The project is licensed under MIT. For local use, the README describes cloning the repository and opening index.html in a web browser.