How to Make a Venn Diagram

A Venn diagram compares two groups using overlapping circles. Each circle represents one set. Items that belong only to the first group sit in the left circle, items unique to the second group sit in the right circle, and anything the two groups share goes in the overlapping middle.

The power of the layout is that the overlap is literal. A reader can see at a glance what is common to both sets and what is exclusive to each. This maker builds two-set diagrams, which is the clearest and most common form for comparing two things side by side.

Before you place anything, name your two circles clearly, such as Cats and Dogs, or Frontend and Backend skills. A good label tells the reader exactly what membership in that circle means.

Then sort every item into one of three buckets: only in set A, only in set B, or in both. The overlap should hold genuinely shared traits, not loosely related ones. Keeping the shared list honest is what makes the diagram informative rather than decorative.

The maker runs entirely in your browser, so your labels and items stay on your device, and the finished diagram downloads as a PNG image you can drop into a slide, document, or post.

Keep the item lists short. A handful of well-chosen entries per region reads far better than a crowded circle nobody can parse. If a region needs a long list, consider whether a table would serve you better.

Use contrasting fill colors so the two circles and their overlap stay easy to tell apart, and make sure text remains legible against the fills. Since the output is a PNG, pick a size that looks crisp wherever you plan to place it, whether that is a presentation or a printed handout.