What is the Dot Mandala Generator?

A free tool that draws mandala-like geometric patterns using nothing but dots, and exports them as PNG or SVG. No sign-up is needed. Everything runs in your browser, and your design is never sent to a server. Use it for laser cutting and printing math art, or for making images for social media.

What you can do

• Stack nine kinds of layers — disc, ring, moon, petals, lotus, rosette, beads, rays and star. A "group" arranges them in a ring, along the four sides or at the four corners, or mirrors them with a circle inversion.
• Choose how dots are laid out — golden-angle spiral (Vogel), concentric rings, radial, spiral, branching, polygon and blue noise. Spacing, size and colour can change smoothly from the centre to the edge.
• Surprise me — one button creates a symmetric mandala. Press it again until you like what you see.
• Fill the gaps — fills the empty parts of your picture with small copies of a mandala, following simple rules. Delete the new group to undo it.
• Export — PNG (image), SVG (vector) and settings (JSON). Set the paper size in pixels, or pick a social-media size such as 1080 × 1080.
• Save and share — your work is saved automatically in this browser. Copy a share link to let someone else open the same picture.

How to use it

1. Press "Surprise me" and repeat until you find a picture you like.
2. Select a layer in the list on the right and adjust its radius, count, dot spacing and colours. Add more shapes with "+ Add".
3. Set the paper size in pixels, then download a PNG or an SVG.

A little maths

The "Vogel" layout is the spiral you see in sunflower seeds: each dot is placed after turning by the golden angle, about 137.5°. A star is written {n/k}: join n points on a circle, skipping k at a time, so {5/2} is the pentagram and {6/2} is the hexagram. A rosette is a ring of equal circles overlapping around a centre, and the petal shapes come from where the circles overlap. You can see the maker's math art at SPIRA SUURA.

FAQ

Is it free?

Yes. There is no sign-up or login.

Can I use the images commercially?

Yes. The author claims no rights over anything you export. Use it freely, commercially or not.

Where is my work stored?

Only in your own browser. Clearing site data erases it, so export the settings (JSON) now and then.

Does it work on a phone?

Yes. On narrow screens the controls fold away so the picture stays in view.

日本語 · SPIRA SUURA