CostyCNC
Image → G-code
Image & Hot wire
ℹ
ℹ
Rotate Table
(mini-32)
Hot wire
Dimensions & DPI
Ratio
DPI ℹ
Text generator
G-code
Port connection

⚠ If it does not work: reload page, reconnect USB or change baud rate

Send to machine
Load G-code
Manual movements
Canvas SVG Preview
MKS Files
⬇ index.html.gz ⬇ probe.html.gz
Analytics
View Stats ↗
Example images for cutting

Right-click image → Copy → Paste into G-code box using "Paste SVG" button

Test 90 gradi

Test image to verify 90° alignment of the CNC.

Fiocco di neve

Low complexity image for machine test.

Test 2

Second low complexity image.

Horse 47x40cm

Horse — 47 cm h × 40 cm w. Good for advanced test.

Demo videos

▼ Click thumbnail to change video

Video 1 Video 2 Video 3 Video 4 Video 5 Video 6 Video 7
My philosophy
"Selling these CNCs represents for me not only a source of income, but also an opportunity to grow and share my passion."

This is not a professional business in the strict sense, but a project that allows me to live comfortably, dedicate time to my customers and continue to experiment.

Thank you for being part of this adventure!

Free Image to G-code Converter for CNC Foam Cutters

CostyCNC Image to G-code is a free, browser-based tool that converts raster and vector images (BMP, JPG, PNG, SVG) into G-code files ready to run on your CNC foam cutter. No software installation required — it works directly in Chrome via the Web Serial API for real-time USB control of GRBL machines.

Key features

Supports hotwire intensity control, rotating table, DPI calibration, text-to-G-code generation, and SVG canvas preview with zoom. Compatible with Arduino, MKS Gen L, and any GRBL-based controller.

Frequently Asked Questions

How do I convert an image to G-code?

Upload a BMP, JPG, PNG or SVG file using the file input at the top left. Adjust dimensions and DPI as needed — the G-code output is generated automatically in the textarea.

Is this tool free?

Yes — completely free online. An offline ZIP is also available for download.

Which browsers are supported?

Google Chrome or any Chromium-based browser is required for the USB serial connection feature (Web Serial API). Image conversion works in all modern browsers.

Which CNC machines are compatible?

Any GRBL-based machine: Arduino Uno/Nano, MKS Gen L, MKS DLC, and CostyCNC's own hobby, mini, media and XBig foam cutters.

CostyCNC © 2025 — costycnc.it
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Convert Images to G-code and Control your CNC

This tool allows you to load an image and convert it directly into G-code files for CNC machines like the CostyCNC.