Spirograph Generator
Build hypotrochoid and epitrochoid curves layer by layer and export them as PNG or SVG.
Curve type
Layers
Layer settings
1 draws the curve closed exactly once; higher values overlap extra passes on purpose.
About this tool
A spirograph is the path traced by a pen fixed off-centre on a small circle rolling around a larger one — a hypotrochoid inside the ring, an epitrochoid outside it. This tool evaluates those parametric equations directly on a canvas, so every layer is a mathematically exact curve rather than a traced approximation, and each layer keeps its own radii, colour and opacity so you can stack them into real artwork. The PNG and SVG exports are produced locally with no uploads or network calls.
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Is Spirograph Generator really free?
Yes. Spirograph Generator is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.
Does Spirograph Generator upload my data?
No. Spirograph Generator runs entirely inside your browser, so anything you type, paste, or open stays on your own device.
Do I need to sign up or install anything?
Neither. There is no account and nothing to download — open the page and Spirograph Generator is ready to use on desktop or mobile.
Does Spirograph Generator work offline?
Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.
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