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Turn a PDF into an editable mind map in a few minutes

Upload a textbook chapter, lecture slides, or your own notes. DeckOwl builds a mind map you can rearrange, expand, and explore branch by branch.

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 mind map works better than a summary for some PDFs

Knowing how to make a mind map from a PDF saves time when a textbook chapter runs forty pages and you need the structure before the details. A map shows how concepts connect, which a flat summary often hides.

Upload a PDF, DOCX, PPTX, text file, or photo of a page
Split long chapters by heading for clearer branches
Check each branch against the original text before studying
Export to PDF with a Plus plan when you need a printable copy

Example mind map branches for the human heart

Chambers of the heartRight atrium · Right ventricle · Left atrium · Left ventricle

Valves of the heartTricuspid · Pulmonary · Mitral · Aortic

Pulmonary circulationRight ventricle pumps deoxygenated blood · Through pulmonary arteries to the lungs · Gas exchange occurs in the alveoli · Returns via pulmonary veins to the left atrium

Systemic circulationLeft ventricle pumps oxygenated blood · Through the aorta to body tissues · Returns via vena cavae to the right atrium

Cardiac cycleAtria contract to fill ventricles · Ventricles contract to eject blood · Diastole is the relaxation and filling phase · Valves close to produce the heartbeat sounds

Generate the full set

Built from your own material

Upload a PDF, DOCX, PPTX, plain text notes, or a photo of a page. The map reflects the content you actually have, not a generic template.

Editable and explorable

Move branches, rename nodes, and expand sub-points as you study. Click into any branch to see the details behind it.

Study from the same source

Turn the same material into flashcards with spaced repetition or quizzes with explanations, so the map is one part of your review.

How it works

Upload your PDF or notes

Add the file or paste your notes. No credit card is needed to start on the free plan.

Let the AI pick the main branches

DeckOwl reads the text, finds the central topics, and nests supporting points under each one.

Edit, explore, and export

Adjust the layout in the browser. PDF export is included with Plus at $39/year or $7.99/month.

Start by uploading the PDF or pasting the section you want to study. Shorter sections give tighter maps, so split a long chapter by its headings if the first map feels crowded.

Once the map exists, check the branches against the source. Rename anything vague, move sub-points to the branch they belong to, and expand the parts you find hardest to remember.

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Frequently asked questions

What should the main branches of a heart mind map cover?

Most students use four main branches: chambers, valves, pulmonary circulation, and systemic circulation. Each branch can then hold the specific structures, pressures, and blood pathways from your source.

How do I study a mind map of the heart effectively?

Cover one branch at a time and try to recall its sub-points from memory before looking. Redraw the blood flow path from scratch, then check it against the map to find gaps.

Can I export my mind map to PDF?

Yes, PDF export is a Plus feature at $39/year or $7.99/month. The free plan lets you create and study mind maps in the browser, but it does not include exports.

Do I need a credit card to try it?

No. You can start on the free plan with 3 generations per month and no credit card. Students with a school email get 40% off a paid plan.

Generate free mind maps

Keep exploring the topic

Review the main ideas visually or practice recalling them.