How do I turn a CAD file into product images?

Open the studio, drop in your file, and Rendermio converts it in the browser. Pick a material, choose one of the six Looks — each sets lighting, backdrop, pose and camera together — and export. A first image takes about a minute, and no 3D experience is needed.

Which file formats can I use?

STEP, IGES, BREP, Rhino 3DM, STL, OBJ, glTF, FBX, Collada, PLY, 3MF, AMF, 3DS, VRML, VTK, USDZ and Draco. STEP, IGES and BREP are converted with a real geometry kernel (OpenCascade compiled to WebAssembly) rather than an approximation, so curved surfaces stay curved.

Is my CAD file uploaded anywhere?

No. Conversion and rendering both happen on your own machine, using your GPU through WebGL. The file never leaves the browser and nothing about it is stored on a server — which is the point for anyone working on unreleased designs under NDA. Signing in creates an account for your plan only; it gives us no access to your work.

Can it render diamonds and gemstones properly?

Yes. The Traced renderer follows light through a stone's real facet geometry with dielectric Fresnel and dispersion, rather than faking sparkle with a texture. There are 40 cuts, sixteen of them real cut geometry down to a heart, and every stone in a piece can be tuned on its own.

Does it only do jewellery?

No. The same engine renders cars, furniture, buildings and household products. Jewellery gets the ray-traced gems and measured golds; everything else gets car paint, timber, leather, cloth, stone, glass and the industrial metals. Tell the studio what your file is and it dresses it accordingly.

Still images up to 8K, export packs sized for store listings, social and print, and a 360° turntable video as WebM or MP4. Cut-out PNGs carry a transparent background for compositing, and a contact sheet labels every frame in a pack.

The browser studio is free and ad-supported: all materials, cuts and looks, 8K images and turntable video. $4 a month removes the ads. Cloud path-traced rendering is planned as a further paid tier — email rendermiostudio@gmail.com to be told when it opens.

What do I need to run it?

A current desktop browser with WebGL 2 — Chrome, Edge, Firefox or Safari. Rendering uses your graphics card, so a faster GPU means faster exports, but a normal laptop handles the catalogue designs comfortably.

Rendermio

Proprietary formats

Rendering a SolidWorks, Fusion, CATIA or Inventor design in the browser

The native files of the big CAD packages are not readable outside those packages, in a browser or anywhere else. But every one of them exports STEP, which is the format Rendermio reads best — exact geometry through a real kernel, parts and colours intact. Here is the export path for each.

The export path, program by program

SolidWorks .sldprt / sldasm: File → Save As → STEP AP214 (.step). For assemblies, tick 'Export as a single file'.
Fusion 360 .f3d: File → Export → STEP (.step). Or right-click a body → Save As Mesh → 3MF for a mesh.
Autodesk Inventor .ipt / iam: File → Export → CAD Format → STEP, application protocol AP214.
Creo / NX .prt: File → Save a Copy → STEP (.stp), AP214 with colours.
CATIA .catpart / catproduct: File → Save As → STEP (.stp). AP214 keeps colours and part names.
Parasolid .x_t / x_b: Open in the originating tool and export STEP; Parasolid itself is not readable in a browser.
JT (Siemens) .jt: Export STEP from Teamcenter or NX; JT is a viewing format with the exact geometry often stripped.
AutoCAD .dwg / dxf: These are usually 2D. For 3D solids, Export → STEP; or use a tool that can write STL from the model.
SketchUp .skp: File → Export → 3D Model → Collada (.dae) or glTF, with 'Triangulate all faces' on.
Blender .blend: File → Export → glTF 2.0 (.glb) — it carries Blender's materials. OBJ and FBX also work.
3ds Max .max: File → Export → FBX or glTF. Older scenes can also write .3ds.
Cinema 4D .c4d: File → Export → glTF or FBX.

Why the browser cannot read them

Native CAD formats are closed, versioned per release, and parsed only by the program that wrote them or by licensed kernels that do not run in a web page. A site that says it renders .sldprt directly is either uploading your file to a server running SolidWorks — which is the thing Rendermio exists to avoid — or is not doing what it says.

STEP is the neutral format all of these programs agree on. Rendermio reads it with OpenCascade compiled to WebAssembly, in your browser, so the geometry you export is the geometry that renders, and it is never sent anywhere.

If STEP is not on offer

Tools without a STEP exporter almost always have glTF, OBJ or FBX. Blender's glTF export keeps its materials; SketchUp writes Collada or glTF; 3ds Max and Cinema 4D write FBX. For 3D-printing tools, 3MF keeps parts separate where STL does not. All seventeen formats are listed here.

Questions

Can I render a SolidWorks .sldprt file online?

Not directly — no browser tool can parse SolidWorks' native format. Save As → STEP AP214 from SolidWorks, then drop the .step into Rendermio. The geometry is exact and part colours and names come with it.

Why STEP and not STL from my CAD program?

STEP carries exact surfaces, separate parts, names and colours, and Rendermio reads it with a real geometry kernel so curves stay curved. STL is a single faceted mesh with none of that. If you are exporting specifically to render, STEP is the right choice every time; STL is what you use when STEP is not on offer.

Which STEP version should I choose?

AP214 or AP242. Both include colours and part names. AP203 is geometry only and every part arrives in the default metal.

Does Rendermio ever see my SolidWorks or Fusion file?

No — it never sees any file. The STEP you export is converted and rendered inside your browser on your own machine, and nothing is uploaded to Rendermio or anyone else.

Open the studio with your STEP file

Free · runs in your browser · your file is never uploaded

The export path, program by program

Why the browser cannot read them

If STEP is not on offer

Questions

About the formats you will export