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.

Machine Specific Guide

What is the best free G-Code software for Shapeoko?

By Mateen Ahmad khan & Hamid kamal

Updated: April 7, 2026

Professional G-code sender and design tool for Carbide 3D Shapeoko, Shapeoko Pro, and Shapeoko HDM. The free browser-based alternative to Carbide Create.

Is it compatible with Shapeoko?

Native ControllerCarbide Motion / GRBL
Post-ProcessorGRBL / Universal
Work Area Preset838mm x 838mm (Shapeoko 4 XL)
OptimizationVerified

Why makers choose Design Swiftly?

"Design Swiftly integrates directly with Shapeoko's GRBL core. Use Gemini AI to generate architectural woodworking designs and export them to your machine in seconds without installing heavy desktop apps."

Launch AI Designer

Global Speed Index

0.37s Live

How to setup your CNC project?

Open the Design Swiftly editor and set your workspace dimensions to match your machine's work area.

Use the AI generation tool or manual drawing tools to create your design.

Click 'Download G-Code' and select the standard GRBL post-processor compatible with your machine.

Load the .nc file into your machine's controller software and start the job.

Pro Features (Free Forever)

Direct G-Code Download

No proprietary apps needed. Download clean .nc or .gcode files directly.

AI Image Vectorization

Take a photo of a sketch and convert it to paths for your CNC instantly.

3D Bit Path Simulator

Preview your machine movements in 3D before you hit start.

Material Presets

Automatic feed/speed suggestions for Plywood, Acrylic, and MDF.

Ready to carve on your Shapeoko?

Stop struggling with complex, expensive desktop software. Design and export right from your web browser.

Start Designing Free

Compatible with GRBL & Major CNCs

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