Mesh formats
Render an OBJ file in your browser
OBJ is the plain-text mesh format everything can write. Rendermio reads it in the browser, keeps its groups as separate parts, and renders it with real metals, stones and materials — on your machine, with nothing uploaded.
How Rendermio reads OBJ
Accepted as .obj. OBJ is parsed as text and its groups and objects become parts. One deliberate choice: the accompanying .mtl file is not applied. OBJ materials are a 1990s shading model that would look wrong beside the studio's measured golds and ray-traced stones, so every part arrives in the default metal and you assign the real thing — a click, and it applies to every part at once.
What comes through
- Groups and objects as separate parts
- Vertex normals if the file has them, so smoothing comes through
- UV coordinates, for the materials that use them
What does not
- .mtl materials and textures — deliberately; you choose from the studio's materials instead
- Units: OBJ has none
- Stones, if the exporter did not include them — same remedy as for STL
Exporting OBJ from your CAD program
- Export with groups or objects enabled; a single-group OBJ arrives as one part
- Include normals in the export for the smoothest shading
- Do not bother exporting the .mtl — it is ignored
OBJ files typically come from Blender, 3ds Max, Maya, ZBrush, Cinema 4D, most CAD exporters. Working in SolidWorks, Fusion, CATIA, Inventor or Creo? Their native files are not readable in a browser — here is what to export instead.
Then what happens
Once the file is in, the steps are the same for every format: tell the studio what the object is, and it dresses it — one click finds the stones in a ring and makes the rest gold. Pick a Look, which sets lighting, backdrop, pose and camera together. Export a listing pack up to 8K or a 360° turntable video. Everything runs on your own GPU; the file never leaves the page.
Questions
Does Rendermio read the .mtl file that came with my OBJ?
No. OBJ materials describe a simple shading model that would look wrong beside the studio's physically measured golds and ray-traced gemstones, so the .mtl is ignored on purpose and every part arrives ready for a real material. Assigning one takes a click.
Will my OBJ's separate objects stay separate?
Yes. Groups and objects in the file become parts in the studio, each of which can take its own material. Export with groups enabled — an OBJ written as a single group arrives as one part.
OBJ or glTF from Blender — which is better for rendering?
glTF, if you want Blender's materials to arrive; OBJ discards them. For geometry alone they are equivalent. Both keep separate objects.
Free · runs in your browser · your file is never uploaded