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Turn your notes into an editable mind map on your PC

Upload a PDF, DOCX, PPTX, plain notes, or a photo of a page and get an editable, explorable mind map you can open in any PC browser.

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Why a mind map helps when you study on a PC

Most students who need a mind map maker for PC are working from lecture slides, a textbook chapter, or a pile of handwritten notes, and they want one visual overview before the exam. DeckOwl reads that material and builds the map for you, so you spend your time understanding the ideas instead of drawing boxes and arrows.

Works in any modern PC browser with no installer
Accepts PDF, DOCX, PPTX, plain text, and images of pages
Branches are editable, so the map can follow your course outline
Explore the map, then turn the same material into flashcards or a quiz

Example Pythagorean theorem mind map branches

Right triangle basicsThe hypotenuse is the side opposite the right angle · The legs form the right angle · The hypotenuse is always the longest side

The formulaa² + b² = c² · c is the hypotenuse · a and b are the legs · Rearrange it to solve for a missing leg

Proof approachesFour identical triangles rearranged into a square · Comparing the areas of squares built on each side · Algebraic rearrangement of a large square

Real-world usesChecking that a corner is square in construction · Finding a diagonal distance · Measuring straight-line distance between two points on a grid

Common mistakesUsing the hypotenuse as a leg · Forgetting the square root at the end · Applying the formula to triangles that are not right triangles

Generate the full set

Built from your own material

Drop in lecture slides, a textbook chapter, or handwritten notes and DeckOwl turns them into a map of main branches and sub-points.

Editable branches

Rename, move, or delete any branch so the map matches how your course organizes the topic.

Explore and study from the map

Click through branches to see how ideas connect, then turn the same material into flashcards or a quiz.

How it works

Upload your material

Add a PDF, DOCX, PPTX, text notes, or a photo of a page. Text in images is read with text recognition.

Review the generated map

Check the main branches and sub-points against your course notes and make any edits you need.

Explore and review

Open each branch to study the connections, then save or export the map if you are on a paid plan.

A good map shows how the big topic splits into smaller pieces. Because the branches are editable, you can reorganize them to follow your instructor's outline, add missing details, and remove anything that does not belong. Students often find that rebuilding the structure is itself a useful study step.

Everything runs in the browser, so there is nothing to install on a PC. The free plan includes 3 generations a month and study in the browser. Plus, at $39/year or $7.99/month, adds unlimited generations and exports.

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Frequently asked questions

How do I study the Pythagorean theorem effectively?

Work through a few right-triangle problems by hand before you memorize the formula, then check each answer by plugging the sides back in. A mind map helps because it links the formula to the proof and to real-world uses.

How can I tell which side of a triangle is the hypotenuse?

The hypotenuse is always the side opposite the right angle, and it is the longest side of the triangle. The two legs are the sides that meet at the right angle.

Can I use DeckOwl on a PC without installing anything?

Yes, DeckOwl runs in your browser, so any PC with a modern browser works. The free plan includes 3 generations a month and studying in the browser.

Can I export my mind map?

Exporting is a paid feature. Plus, at $39/year or $7.99/month, includes PDF and DOCX exports, and students get 40% off with a school email.

Generate free mind maps

Keep exploring the topic

Review the main ideas visually or practice recalling them.