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Turn your notes into a concept map that shows Venn diagram overlaps

Upload a chapter, lecture slides, or photos of your notes and get an editable mind map that separates what is unique from what two topics share.

Create mind maps nowFree · No credit card required

Drop files here or browsePDF, DOCX, PPTX, text or photos of your notes · several files with Plus

Free · First set needs no signup · Creates mind maps in seconds

Why a Venn diagram belongs inside a concept map

A blank Venn diagram worksheet shows where the circles go but not what belongs inside them. A Venn diagram concept map built from your own chapter or lecture notes puts the comparison, the shared traits, and the supporting details in one place you can expand as you study.

Shows the overlap and the unique parts of each set in one map
Keeps supporting details under each branch so nothing gets lost
Lets you rename, rearrange, or remove branches after generation
Works with notes, PDFs, slides, and photos of handwritten pages

Example Venn diagram concept map branches

Venn diagram basicsTwo or more overlapping circles · Each circle is a set · The overlap holds items shared by all sets · Outside the circles holds items in none of the sets

Reading the overlapThe intersection means shared membership · Label it with the common trait · Check that each item belongs to every set it sits in

Comparing two setsList unique traits on each side · Place shared traits in the middle · Count only items that truly appear in both sets

Three-circle Venn diagramsSeven regions sit inside the circles · The center is shared by all three · Each pairwise overlap sits between two circles

Venn diagram vs concept mapA Venn diagram shows overlap between sets · A concept map links ideas with labeled connections · Use both when you compare and connect topics

Generate the full set

Editable branches

Rename, move, or delete any branch so the map matches how your course teaches the comparison.

Explorable structure

Expand and collapse sections to focus on the overlap first, then drill into details as you review.

Built from your material

Works from PDF, DOCX, PPTX, plain text, and photos of pages read with text recognition.

How it works

Upload your source

Add the reading, slides, or notes that cover both concepts you need to compare.

Review the map

Check the shared ideas in the center and the unique ideas on each side, then edit anything that is off.

Study from the map

Explore the branches, then export it or turn it into flashcards and quizzes with a paid plan.

If you need a printable blank template, you can find one elsewhere. DeckOwl is built to make a custom map from the material your class actually uses, so the labels match your terms and definitions.

Start with the free plan to try a few maps in the browser. Plus adds unlimited generations and export to PDF, DOCX, Anki, and CSV for review outside the app.

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Frequently asked questions

How do I decide which ideas go in the overlap of a Venn diagram?

Put an idea in the overlap only if it is true for both concepts at the same time. If it applies to just one, it belongs in that circle's unique section.

How many branches should a Venn diagram concept map have for studying?

Most comparisons work well with two to four main branches, one for each unique area and one for the shared center. Add sub-points only when they help you recall a definition or example.

Can I edit the mind map after DeckOwl generates it?

Yes, the map is editable, so you can rename, move, or delete branches. Exporting the map to PDF, DOCX, or other formats requires a paid plan.

Is there a free plan, and do I need a credit card to start?

The free plan includes 3 generations per month and studying in the browser, and you do not need a credit card to start. Exports are part of Plus, which costs $39 per year or $7.99 per month.

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Keep exploring the topic

Review the main ideas visually or practice recalling them.