Visualize Set Relationships in Seconds
Build Venn and Euler diagrams right in the browser. Drag-free editing, real proportional sizing, instant SVG/PNG export. AI cannot draw accurate overlapping set diagrams for you.
What is a Venn Diagram?
A Venn diagram is a picture that uses overlapping circles to show how two, three, or four sets of things relate to each other. Where the circles overlap, the items in common live. Where they do not, the items are unique to that set. Venn diagrams are used in school to teach set theory, in business to compare products or audiences, in research to show how categories overlap, and in software to reason about permissions or feature sets.
Pick this tool when you want a free, no-signup Venn diagram maker that works entirely in your browser. There is no upload, no account, and no daily limit. Your data never leaves the page.
Two open source libraries do the work: venn.js computes the circle positions and intersections, and d3 renders the SVG. We add a sidebar for editing, an export pipeline, and a small UI to switch between Venn and Euler layouts.
ChatGPT can describe a Venn diagram in words, but it cannot draw one that is proportionally accurate, ready to drop into a slide deck, and editable until you are happy. This tool solves the actual job: getting the picture right and getting the picture out.
2-circle comparisons (frontend vs backend), 3-circle positions (cheap, fast, good), 4-circle market segments, Euler layouts that scale to your data, and any combination you need for teaching, presenting, or thinking out loud.
The page loads venn.js and d3 from a CDN once, then everything you do stays in your browser memory. There is no backend storing your labels, no analytics on your content, and no tracking pixels on the canvas.
Frequently Asked Questions
Is the Venn Diagram Maker really free?
Yes. The tool is 100% free, with no signup, no daily limit, no watermark, and no upsell. You can make unlimited Venn and Euler diagrams in 2, 3, or 4 circle layouts. Everything runs in your browser, so there is no server cost for us to pass on.
Do I need to upload my data anywhere?
No. The diagram is rendered locally using venn.js and d3, both loaded from a public CDN. Your labels, colors, and any counts stay in your browser. Closing the tab discards everything. There is no upload, no cloud save, no analytics on the diagram content.
What is the difference between Venn and Euler diagrams?
A Venn diagram shows all possible intersections between sets, even empty ones, with circles drawn in fixed positions. An Euler diagram scales each circle so its area matches the set size and only shows the intersections that actually contain elements. We support both: switch the diagram type in the toolbar and venn.js recomputes the layout for you.
Can I export my diagram as an image?
Yes. Click Export SVG to download a clean, scalable vector file that you can open in Figma, Illustrator, or any vector editor. Click Export PNG to download a 2x resolution PNG suitable for slides, documents, and social posts. Both formats are produced from the same SVG so they always match the preview.
How do I label the intersections, not just the circles?
Each circle in the sidebar has a name, a color, and an optional list of values. The diagram auto-detects the intersections: items that appear in multiple sets are placed in the overlapping region. If you need to label the intersection itself, add a separate circle whose values are exactly the items you want in that region.
Will this work on my phone or tablet?
Yes. The layout is fully responsive. The sidebar collapses into a top sheet on narrow screens, and the canvas auto-resizes. The SVG export keeps the same proportions on any device, so the same diagram looks identical on desktop and mobile.
Can I use the output commercially?
Yes. The diagram you create is yours. The venn.js and d3 libraries are open source (MIT and BSD licenses), so the rendering engine is also free to use. There is no attribution requirement on the export, but a link back to DevTools Hub is always appreciated.
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