Modelab 3D

Online 3D model generator

Create custom models for 3D printing directly in your browser and download them as 3MF (color) or STL. No sign-up, nothing to install, with a real 3D preview.

Create STL onlineCreate 3MF onlineReal 3D previewFree, no sign-up

Drag to rotate · scroll or pinch to zoom

🔒 100% private — your designs are generated on your device and never uploaded to any server.

How it works

In 3 steps, no design skills

1

Pick the object and type

Select keychain, sign, number, desk sign, label… and add your text, number, emoji or logo.

2

Customize and check in 3D

Change shape, size, thickness, font and colors. Rotate and zoom in the real 3D view.

3

Download ready to print

Get the 3MF file with colors included, or STL for maximum compatibility. Open it in your program and print.

Create 3D files to print without knowing design

This online 3D model generator turns your text, numbers, emojis or logo into real 3D geometry, ready to print. It's not a simulation or an image: it builds an authentic mesh you can download and open in any printing program (Bambu Studio, PrusaSlicer, Orca Slicer or Cura).

You can create an STL online for maximum compatibility, or better still create a 3MF online that keeps both colors (base and relief) so your multicolor printer assigns them automatically. Everything happens on your device: your designs are never uploaded to any server.

STL or 3MF? Which to choose

3MF is the modern, recommended format: it stores color, materials and multiple parts in a single file. Use it if you want your keychain or sign to come out in two colors with zero setup. STL doesn't store color, but absolutely every program and printer opens it; it's the safe choice for older gear.

Tips for a clean print

Use a base at least 2 mm thick, a relief of 1 to 1.5 mm and colors with good contrast. If the text is long, make the plate bigger so the letters don't get too thin. The tool warns you in real time when something could cause printing problems.

Use ideas

What you can use it for

Keychains

With names, initials or icons. The quick, cheap gift.

Signs & plaques

For doors, walls, businesses or your desk.

House numbers

Big and legible, ready to screw on.

Labels

For plants, boxes, gifts or organizing.

Custom keepsakes

Souvenirs, bookmarks and named gifts.

Quick prototypes

Flat signs and parts with raised text.

Popular templates

Start with a generator

Each generator comes with ready-to-edit templates. Pick the one closest to what you want to create.

Custom model 3D keychains Door signs House numbers Desk signs Labels Name badges
FAQ

Common questions

What is a 3MF file and how is it different from STL?
3MF is a modern 3D-printing format that stores the geometry together with colors, materials and multiple parts in a single file. STL only stores the shape, with no color. With 3MF, your multicolor printer assigns the filaments automatically.
Can I create an STL online free with this tool?
Yes. Type your text, adjust the size and click “Download STL”. You'll get a .zip with the two parts ready to import into any printing program, completely free and with no sign-up.
Is the model I download real 3D geometry?
Yes. The preview isn't a decorative image: it builds an authentic 3D mesh (vertices and triangles), and that exact mesh is what's exported as 3MF or STL.
Do I need to install anything or create an account?
No. It works 100% in the browser, with no install or sign-up. Your designs are processed on your own device and never uploaded to any server.
Can I use emojis or my logo?
Yes. You can add an emoji or upload your logo; it becomes a raised silhouette. Since the relief is a single color, full-color logos are turned into a legible silhouette.
Which printers and programs are supported?
All that accept STL or 3MF: Bambu Lab, Prusa, Creality and similar, using Bambu Studio, PrusaSlicer, Orca Slicer or Cura.
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3D keychains Door signs House numbers Desk signs Labels Name badges