Free Browser-Based CAD/CAM for CNC & Laser Cutting — Design Swiftly

Design Swiftly — Professional Browser CAD/CAM Features

Complete feature overview of Design Swiftly: CNC routing, laser cutting, 3D extrusion, neon sign design, AI commands, and GRBL machine control — all in your browser, free forever.

0.37s Instant Load · Free Forever

Professional CNC CAD/CAM
Inside Your Browser

Built for CNC enthusiasts, neon sign makers, woodworkers, and architects. Professional-grade design, simulation, and machine control — no install, no fees.

No Install Required
Web Serial API
AI-Powered (Gemini 2.0)
Works Offline (PWA)

Vector Design (CAD)

  • Boolean operations: Union, Subtract, Intersect
  • SVG & DXF import/export with sanitization
  • Bezier path editing with node handles
  • Precision dimensioning, align, and distribute
  • Text-to-path, Single-line Hershey fonts

3D Simulation (CAM)

  • Real-time G-Code toolpath generation
  • Material removal 3D simulation
  • Inside, Outside, Pocket, V-Carve, Drill strategies
  • Multi-pass depth control + tab generation
  • Layer-by-layer playback with speed control

Machine Control

  • Direct GRBL control via Web Serial API
  • XYZ jogging, homing, Z-probe (G38.2)
  • Work Coordinate Systems G54–G59
  • Real-time feed rate override during job
  • GRBL settings editor with step-per-mm calibration
AI Integration — Gemini 2.0 Flash

Design With
Natural Language

Tell the AI what you want to build. Design Swiftly's integrated Gemini 2.0 Flash understands your canvas, your shapes, and your intent — then executes instantly.

  • "Create a 6×4m living room with an L-shape sofa"
  • "Extrude @Wall_1 by 2400mm"
  • "Add 10mm corner radius to all rectangles"
  • "Upload photo → convert to SVG cutpath"
AI Command Palette
// Natural language CAD commands
@GeminiAI create circle r=20 at cursor
✓ Circle added at (145, 230) · r=20mm
@GeminiAI extrude selected by 50mm
✓ 3D volume: 50mm height · handles active
Type a command...
3D Extrusion Engine

From 2D Floor Plan to 3D Space

Select any closed shape, grab an interactive handle, and drag it into a 3D volume — in real time, inside your browser.

Interactive Handles

CAD-standard axis handles (X=Red, Y=Green, Z=Blue) with live unit labels (e.g. 2400mm) always readable during orbit.

Negative Growth

Drag sideways handles through the shape to expand in any direction while keeping the opposite face pinned in world space.

Face vs Shape Select

Single-click selects a face for local editing. Double-click selects the entire 3D object for global manipulation.

3D Face Alignment

Snap any two 3D shapes together by matching Top, Bottom, or Side faces with sub-millimeter accuracy.

Platform Deep-Dive

A technical walkthrough of the Design Swiftly environment.

Vector CAD Engine

Precision Design Canvas

Our custom vector engine delivers sub-micron precision. Draw complex splines, apply path offsets, and resize interactively. The properties panel gives you direct control over every dimension, rotation, and corner radius.

  • Dynamic dimension tooltips during resize
  • Real-time axis snapping
  • Layer-based geometry management
  • Multi-canvas tabs with independent undo/redo

Vector Canvas Preview

3D Simulation Preview

3D CAM Simulator

Validate Before You Cut

Don't waste expensive material. Our hardware-accelerated 3D simulator shows you exactly how the tool bit moves through your material — including entry angles, lead-ins, and multi-pass depths.

G-Code
Real-time Generation
Tool Lib
Comprehensive Bits
Multi-Pass
Depth Control
Job Timer
Time Estimate
Intuitive Controls

Streamlined Workflow

Switching between 2D design and 3D simulation is seamless. The global command palette (Ctrl+Space) gives instant access to every tool, while the right-side properties panel keeps all parameters within reach.

Quick Help
Smart Layout
Cmd Palette

Workflow Preview

Technical Architecture

Industrial-grade precision running inside standard browser technology.

CAD EngineReact 18 + Paper.js
SimulationThree.js / WebGL (React Three Fiber)
G-Code DialectGRBL 1.1 / FluidNC
Precision0.001mm Engine Mapping
AI IntegrationGoogle Gemini 2.0 Flash
Machine APIWeb Serial (Chrome/Edge)
0.37s
LCP (Load)
FREE
For Ever
60fps
Render
PWA
Offline
AI
Gemini 2.0
WEB
Serial API

Built for Every Maker

One platform for every workshop, studio, and classroom.

🪵

CNC Routing

Wood, MDF, plywood, aluminium, plastics

✂️

Laser Cutting

Acrylic, wood, leather, fabric

💡

Neon Signs

LED channel backplates & bending guides

🏠

Interior Design

Floor plans, 3D arch-viz, furniture

🎨

Vinyl Cutting

Stickers, decals, heat-transfer vinyl

📍

PCB Milling

Isolation routing for circuit boards

💎

Jewelry

Precision metalwork patterns

🎓

Education

Teach CNC without software licenses

Ready to Design?

No install. No account. Just open and create.