MeshMarkup Reviews and Details

Questions & Answers

1. What makes MeshMarkup unique?

   Feedback lives on the 3D model itself. Instead of sending renders and screenshots back and forth, you share a link, and the person reviewing clicks on the exact spot they mean. Each comment is pinned to the geometry, so there’s no guessing which part or which side. It opens CAD files like STEP, IGES and Rhino directly in the browser, and the reviewer doesn’t need an account or any software. Review of renders and images, versions, client sign-off and a free 3D viewer and converter sit in the same place.

2. Why should a person choose MeshMarkup over its competitors?

   Most 3D viewers are built for viewing, and most review tools are built for 2D images. MeshMarkup is built for getting a decision on a 3D model. Your client opens a link in any browser, no install and no account, turns the model and comments right on it. You see every note in context, compare versions side by side and get a clear sign-off at the end. It handles CAD formats (STEP, IGES, Rhino) as well as OBJ, STL, FBX and GLB, and there’s a free plan to start, with no setup and nothing to install.

3. How would you describe the primary audience of MeshMarkup?

   Designers, engineers and studios who send 3D models to someone else for feedback or approval. That includes product and industrial designers, mechanical and CAD engineers, 3D artists and visualisation studios, furniture and cabinetry makers, fabrication and 3D printing shops, and the clients and teams who review their work. It’s also used as a quick online viewer and converter by anyone who needs to open a STEP, OBJ or STL file without installing software.

4. What's the story behind MeshMarkup?

   I worked for years as a 3D designer, with a background in mechanical engineering, and the slowest part of every project was getting feedback. I’d export a set of renders, email them over, and get back notes like “the part on the left, a bit bigger”. Which part? From which side? We’d go back and forth until we understood each other. I started building MeshMarkup to fix that for myself: a way to share the actual model and let people point at what they mean. It’s still early, and I’m shaping it with the people who use it.

5. Which are the primary technologies used for building MeshMarkup?

   Next.js, React and TypeScript, with Three.js (via React Three Fiber) for the 3D viewer. OpenCascade (occt-import-js) and rhino3dm convert STEP, IGES and Rhino files in the browser. Supabase (PostgreSQL, auth and storage) handles the backend, Stripe handles payments, and it’s hosted on Vercel, with a Google Cloud converter for large CAD files.