Drop a file and the model opens right in your browser without being uploaded. Dimensions are shown at once, and the ruler measures point to point. Need sign-off? Show the model to your customer via a link with a PIN.
How to open an STL or 3MF online
Press “Choose file” or drop an STL or 3MF of up to 200 MB onto the page. Nothing to install and no sign-up to view: the file is read in your browser and never sent to the server. If a 3MF holds several objects, first choose which parts to open.
You can rotate and zoom the model or go full screen; a double tap brings back the starting view. Works on desktop and on phones.
Dimensions and the ruler
The overall size — width, depth and height in millimetres — is shown next to the model. To measure between two points, turn on the “Ruler” and tap the model twice. The segment length and its X, Y and Z projections appear below the model. You can take several measurements and delete the ones you don't need.
Very large models (over 300,000 triangles) are simplified for viewing; the measurements then show the error, never more than 0.15 mm. Smaller models are shown as they are, and the measurement is exact.
Show the model to your customer
If the model needs approval before printing, press “Show to client”. This is where you sign in — with Google or a link sent to your email, no password. The model is uploaded to your account without choosing the file again. Only you and those you send the PIN link to can see it.
What your customer can do
- open the model via the link without signing up and rotate it;
- measure it with the ruler;
- leave a comment pinned right on the model — “make it thicker here”;
- pick the colours of the parts.
You reply to comments and mark them “Done”. Upload a new version to the same project and your customer sees it at the same link. The print file is never handed out: your customer only sees the preview model.
Terms and your profile
Free: 2 projects, each kept for 7 days after the last upload. You can reissue or close the link and set the customer page language to Ukrainian, Russian or English. In your customer profile, add your workshop name, logo, contacts and colours — your customer will see them. All projects are listed in your account under “My 3D projects”.
FAQ
How do I open an STL file online?
Drop the file onto this page or press “Choose file”. The model opens in your browser — no software or sign-up needed. A 3MF opens the same way.
Is my file uploaded to a server?
No, while you are just viewing the model the file stays in your browser. It reaches the server only if you press “Show to client” and confirm the upload.
How do I measure a distance on the model?
Turn on the “Ruler” and tap two points on the model. You get the distance in millimetres and its X, Y and Z projections. You can take several measurements and delete the ones you don't need.
How accurate are the measurements?
Smaller models are shown unchanged, so the measurement is exact. Models over 300,000 triangles are simplified for viewing; the error is then shown next to the measurements and never exceeds 0.15 mm.
How do I show a 3D model to a customer?
Open the model, press “Show to client” and sign in. Then create a link for your customer — it opens with a PIN. Your customer rotates the model, leaves pinned comments and picks colours without signing up.
Can my customer download my file?
No. Your customer sees a preview model; the print file is never handed out. You can close the link at any time.