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3DAI

3D Drawing Online

To draw in 3D online, sketch on the green sheet below with your mouse or finger. Each stroke becomes a solid 3D line. Move the sheet to the front, side or ground and slide it in depth to build shapes in space, turn the view to check them, then download an STL, OBJ or GLB file.

Free · no signup · your files stay in your browser

Loading the 3D canvas...

How to draw in 3D online

  1. 1

    Pick a plane

    Choose Front, Side or Ground and slide the sheet to the depth you want. Strokes land on that sheet, so you control where each line sits in space.

  2. 2

    Draw

    Drag with the left mouse button or one finger. Set the colour and thickness, tick Mirror for symmetric shapes, or Straight lines for clean edges.

  3. 3

    Turn and build

    Right-drag or use two fingers to orbit, and scroll or pinch to zoom. Move the sheet and keep drawing to add depth. Undo with Ctrl+Z.

  4. 4

    Download

    Save an STL or OBJ for 3D printing and Blender, a GLB for the web, AR and game engines, or a PNG picture of the view.

More free 3D file tools

Sketch to 3D

Upload a drawing on paper and AI turns it into a full 3D model.

AI 3D Texturing Studio

Describe a look and AI paints a full colour texture onto your mesh.

GLB Viewer

Open your exported GLB, turn it around and check it.

STL Simplifier

Shrink a heavy STL to fewer triangles before printing or sharing.

Frequently Asked Questions

Yes. It runs fully in your browser with no account, no install and no watermark. Your drawing stays on your device and is saved in this browser, so you can close the tab and continue later. Nothing is uploaded.
Every stroke lands on the drawing sheet. Draw a line on the Front sheet, slide Depth to move the sheet forward or back, and draw again; or switch to the Side or Ground sheet to draw across the first lines. Face the plane points the camera straight at the sheet, and Orbit mode lets you turn the view with one finger or the left button.
Yes. Download the STL and open it in your slicer. Each line is a solid tube with round ends, and one small grid square is 1 cm, so the file comes out in millimetres at the size you see. Use a thicker brush for strong prints, and make sure lines touch or cross so the print is one piece.
STL and OBJ (in millimetres) for 3D printing, Blender and CAD tools, GLB (in metres, with colours) for the web, AR, Unity, Unreal and three.js, and a PNG image of the current view. The GLB keeps the stroke colours; STL has no colour, and the OBJ holds only the shape.
Yes. Draw with one finger, turn the view with two fingers and pinch to zoom. A stylus works like a finger. A bigger screen is easier for detailed drawings, but every button works on touch.