✦3D tool collection
STL File Tools Online
Choose an STL task: preview a mesh, inspect its statistics, run a basic pre-print check, or export a web-ready GLB. All STL tools share one $1.90 permanent unlock.
STL File Tools Online
Explore compatible 3D tools
Viewer
STLSTL Viewer OnlineOpen and inspect STL files online before 3D printing. Freecreat is an STL file viewer with orbit, zoom, wireframe, screenshots, and STL to GLB conversion in your browser.Explore tool →
Viewer
STLSTL File Inspector OnlineInspect compatible STL files online for file type, triangle count, dimensions, normals, and degenerate triangles.Explore tool →
Viewer
STLSTL Print Check OnlineRun a basic local STL geometry check before a 3D-printing workflow, including dimensions and degenerate triangle detection.Explore tool →
Converter
STL → GLBSTL to GLB Converter OnlineConvert STL mesh files to GLB online for web 3D, product previews, and real-time scenes. Preview the result locally, then download a compatible GLB after the one-time unlock.Explore tool →
Converter
STL → OBJSTL to OBJ Converter OnlineConvert compatible STL mesh geometry to OBJ online. Preview locally and download an OBJ mesh after the STL format unlock.Explore tool →
Converter
STL → GLTFSTL to GLTF Converter OnlineConvert compatible STL mesh geometry to a JSON-based glTF file online for web 3D workflows.Explore tool →
How Freecreat 3D tools work
Sign in, unlock the format once for $1.90, then process compatible files locally in your browser. Each tool page explains support and limitations so you can choose the right viewer or converter.