Getting Started
S-CAD is a browser-based 2D CAD tool. You can start drawing immediately without installing software or creating an account. Once the canvas opens, begin by setting your units, scale, and paper size in the settings panel.
The main flow is simple: set up the page, draw the base geometry, edit or group objects as needed, then export the result as JSON, SVG, PDF, or DXF.
1. Navigate the Canvas
Use the mouse wheel to zoom in and out. Pan with the middle mouse button, or drag while holding Alt.
Switching smoothly between zoom and pan is the fastest way to work on both overall layout and detail areas.
Main Shortcuts
| Key | Action |
|---|---|
| Space + Drag | Pan the view |
| Mouse Wheel | Zoom in / out |
| Ctrl + Z | Undo |
| Ctrl + Y | Redo |
| Delete / Backspace | Delete selected objects |
| Escape | Cancel the current tool |
| Ctrl + A | Select all |
2. Draw Basic Geometry
Start with simple tools such as line, circle, rectangle, arc, polyline, and text. These are enough to build most sketches and construction geometry before refinement.
Common Drawing Tools
| Tool | Description |
|---|---|
| Line | Create a straight segment between two points |
| Circle | Create a circle from center and radius |
| Rect | Create a rectangle from two corner points |
| Polyline | Create connected line segments |
| Arc | Create an arc |
| Text | Place annotation text |
3. Select and Edit
Click to select objects. Hold Shift while clicking to add more items.
Many edits are faster after rough drawing, so do not worry about perfect geometry at the first pass.
Use trim, fillet, move, rotate, and pattern copy to refine the drawing. You can also reorganize objects into groups for easier management.
4. Save and Export
Save your work in JSON when you want to reopen and continue editing later. Export SVG or PDF for output, and DXF when you need to exchange data with other CAD software.
Next Step
If you want a fuller reference, continue to the user manual. When you are ready, open the app and start drawing.
Need help or want to report a problem? Use the contact form.