What is Design Swiftly?

Design Swiftly (cnc.jugaaadi.com) is a free, professional browser-based CAD/CAM platform for CNC routing, laser cutting, neon sign design, 3D extrusion, and architectural floor plan visualization. It loads in 0.37 seconds, requires no installation, and runs on any device — including mobile and tablet.

How fast does Design Swiftly load?

Design Swiftly achieves a verified Largest Contentful Paint (LCP) of 0.37 seconds. This is accomplished through a Smart Prefetch architecture that renders the canvas immediately on first byte, then loads heavy modules (3D simulator, fonts) in the background while the browser is idle.

Is Design Swiftly free?

Yes. Design Swiftly is completely free — no subscription, no premium tier, no paywalls, no usage limits, and no account required. All features including AI design, 3D simulation, and GRBL machine control are available to every user at no cost.

Does Design Swiftly work offline?

Yes. Design Swiftly is a Progressive Web App (PWA). After the first load, the full application is cached and available offline. You can design, generate G-code, and work with your files without an internet connection.

What CNC file formats does Design Swiftly support?

Design Swiftly supports SVG, DXF, PNG, JPG, WebP, and GIF imports. It exports to SVG, G-Code (.gcode / .nc), PNG, PDF, and the native .swiftly project format. G-Code uses the GRBL dialect with standardized safety headers (G17 G21 G90 G40 G80).

What CAM toolpath strategies are available?

Design Swiftly offers six CAM strategies: Inside Cut (offset inward by tool radius), Outside Cut (offset outward), On-Path (cut on centerline), Pocket (full material removal), V-Carve (angled engraving), and Drill (point drilling). All support multi-pass depth control, tab generation, and lead-in/out arcs.

What AI features does Design Swiftly have?

Design Swiftly integrates Google Gemini 2.0 Flash for three AI capabilities: (1) Natural language CAD commands — type 'Create a 6x4m living room with an L-sofa' and the canvas updates instantly. (2) AI Image-to-SVG — upload any photo and Gemini traces it to clean vector paths ready for cutting. (3) Context-aware suggestions — the AI understands your current canvas state and suggests next actions.

Can I design neon signs with Design Swiftly?

Yes. Design Swiftly includes a dedicated Neon Sign Maker that uses Hershey single-line fonts — fonts specifically optimized for CNC and laser engraving that produce a single cutting pass per stroke (no 'cutting air' inside closed letters). The tool auto-generates G-code for neon sign bending guides and LED channel backplates.

Does Design Swiftly support 3D design?

Yes. Design Swiftly has a full 3D stack: (1) Extrude Tool — select any 2D shape and drag interactive handles to define 3D volumes. (2) 3D Align Tool — snap extruded shapes together face-to-face with sub-millimeter accuracy. (3) Arch-Viz Viewer — a high-fidelity Three.js viewport with dynamic lighting presets (Day, Noon, Night), shadow rendering, and orbit/pan/zoom navigation.

Which CNC machines does Design Swiftly support?

Design Swiftly supports any GRBL-based or Marlin-based CNC controller via the Web Serial API — directly from your browser, with no extra software. Compatible machines include X-Carve, Shapeoko, Longmill, OpenBuilds Lead/WorkBee, 3018 Mini CNC, K40 laser with GRBL upgrade, Sculpfun, xTool, Atomstack laser engravers, and any custom GRBL Arduino build.

What Is Browser-Based CAD/CAM? A Complete Beginner's Guide

If you've ever used a CNC machine, laser cutter, or vinyl cutter, you've likely heard the term CAD/CAM. But what does it actually mean — and why does it matter whether your software runs in a browser or on the desktop?

What Is CAD?

CAD stands for Computer-Aided Design. It's the digital drafting phase where you draw shapes, paths, and text that represent what you want to cut or engrave. In Design Swiftly, the CAD engine is powered by Paper.js running inside a React 18 application — giving you sub-millimetre precision on a standard HTML5 canvas.

Design Swiftly's CAD tools include:

Shapes: rectangle, circle, polygon, triangle, spline, polyline, pen
Text: Google Fonts (100+), Hershey single-line engraving fonts, custom TTF/OTF upload
Boolean operations: Union, Subtract, Intersect for complex geometry
SVG & DXF import/export
Path node editing with Bezier handles (Alt+Drag)

What Is CAM?

CAM stands for Computer-Aided Manufacturing. This is where your drawing gets translated into machine instructions — specifically G-Code, a standardised language that tells your CNC or laser machine where to move, how fast, and how deep to cut.

In Design Swiftly, G-Code is generated locally in your browser using a Web Worker (a background thread) so the UI never freezes. You get real-time G-Code as you adjust settings, plus a 3D toolpath simulator built on Three.js to preview exactly how the tool will move.

Why Browser-Based?

Traditional CAD/CAM software is installed as a heavyweight desktop application. Browser-based tools like Design Swiftly run entirely inside Chrome or Edge — no download, no installer, no licence key.

Feature	Desktop CAD/CAM	Design Swiftly (Browser)
Install required	Yes (1–10 GB)	No
Works on tablet/phone	Rarely	Yes (full touch support)
Offline capability	Always	Yes (PWA after first load)
Price	$200–$600+/year	Free forever
Load time	10–30 seconds	0.37 seconds (verified LCP)
AI assistance	Rare/expensive add-on	Built-in (Gemini 2.0 Flash)

How Does Design Swiftly Load So Fast?

Design Swiftly uses a Smart Prefetch architecture. The canvas and tool palette render on the first byte of HTML. Heavy modules — the 3D simulator, help modal, font engine — are prefetched during browser idle time using requestIdleCallback. This gives a verified LCP of 0.37 seconds, faster than most images load.

Try it yourself

Open https://cnc.jugaaadi.com in Chrome and press F12 → Lighthouse. You'll see LCP under 400ms even on a cold cache.

Getting Started in Design Swiftly

1Navigate to https://cnc.jugaaadi.com — no account needed
2Press R to draw a rectangle, C for a circle, T for text
3Open the right sidebar → Properties tab to set dimensions
4Switch to the Simulator tab to generate G-Code and preview toolpaths
5Connect your GRBL machine via the Machine tab (Chrome/Edge only, Web Serial API)

Try it yourself →

Open Design Swiftly — Free, No Install

No account. No download. Just open and create.

Launch Design Swiftly

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