Online CAD Tools
Preview STL, OBJ, GLB, and DXF files or edit OBJ/GLB transforms and 2D sketches—processing stays in your browser.
STL Viewer
Preview 3D STL meshes online — orbit, zoom, and inspect model size privately in your browser.
CADInstantOBJ Viewer
Open Wavefront OBJ models online and inspect them with orbit, zoom, and pan — locally.
CADInstantGLB Viewer
Open a GLB or GLTF file in a free online 3D viewer — orbit, zoom, and check bounds privately in your browser.
CADInstantDXF Viewer
Preview DXF CAD drawings online — lines, polylines, arcs, and circles render locally.
CADInstantOBJ Editor
Edit an OBJ model online — transform with gizmos, toggle wireframe, recolor, then download an updated .obj.
CADInstantGLB Editor
Edit a GLB/GLTF model online — transform with gizmos, toggle wireframe, recolor, then download an updated .glb.
CADInstant2D CAD Sketch Editor
Sketch simple 2D CAD geometry online — lines, rectangles, and circles — then download SVG.
CADInstant
How these CAD tools work
Viewers and 3D editors parse files with browser libraries (three.js / dxf-parser) and render with WebGL or Canvas. Editors support transform gizmos and local export. Files are not uploaded to The ToolSphere servers for these tools. Read our Privacy Policy.
Who these tools are for
Makers, students, and engineers who need a quick private preview, a light 3D transform pass, or a simple SVG sketch without installing desktop CAD.
FAQ
Are my CAD files uploaded?expand_more
No for supported The ToolSphere CAD tools. Parsing and rendering run in your browser. Learn more about GLB, OBJ, and 3D format best practices in our guides.
Do you open DWG?expand_more
Not yet. Convert DWG to DXF or export STL/OBJ/GLB from your CAD app, then use the matching tool. See our GLB vs OBJ guide for format guidance.
Do I need an account?expand_more
No signup required.
How do I optimize GLB files for the web?expand_more
GLB files should be under 5MB for web delivery. Our optimize GLB guide covers polygon reduction, texture compression, and export settings.
Guides and related tools
Looking for something else? Browse all tools · Read the blog.