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Turn your own notes into an editable mind map

If your starting point is a lecture PDF or a page of messy notes, DeckOwl reads the file and builds the main branches and sub-branches for you, so you can edit and explore the map instead of starting from a blank page.

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

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Creating a mind map from your own material

Many students who want to create a mind map using Napkin AI are really trying to turn a stack of notes into a picture they can scan at a glance. The useful part is the structure: one central idea, a few main branches, and short sub-points under each.

Start from your own PDF, slides, or notes so the branches match your course.
Keep the central topic broad and the sub-points short, usually a few words each.
Edit the draft to fix any branch the generator placed in the wrong section.
Use the map as a review sheet, then turn the same material into flashcards or quizzes.

Example biology mind map branches: cell structure

Cell membranePhospholipid bilayer · selective permeability · embedded proteins

MitochondriaSite of cellular respiration · produces most ATP · contains its own DNA

NucleusContains chromosomes · bounded by nuclear envelope · site of DNA replication and transcription

Endoplasmic reticulumRough ER makes proteins · smooth ER makes lipids · smooth ER detoxifies some drugs

Golgi apparatusModifies and sorts proteins · packages vesicles · ships products to the membrane

Generate the full set

Reads your files

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

Editable branches

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

Explore at your pace

Expand and collapse branches to focus on one topic at a time, then turn the same material into flashcards or a quiz.

How it works

Add your source

Upload a PDF, slide deck, Word file, or paste your notes. Photos of pages work too.

Generate the map

DeckOwl identifies the central topic, main branches, and supporting points from your material.

Edit and explore

Reshape the branches, add your own nodes, and expand each section while you review.

A good mind map starts with the source. Pick the chapter or lecture you need, put the main headings on the first ring of branches, and place key terms, dates, or definitions on the next ring. Keeping each node to a few words makes the map easier to review later.

DeckOwl builds that structure from your own files, so you start with a draft instead of an empty canvas. You can then edit the branches, remove anything off topic, and go back to the map whenever you need a quick overview before an exam.

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Turn a PDF or class notes into an editable, explorable mind map using the free DeckOwl plan.

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Frequently asked questions

How many main branches should a mind map have?

Most chapter-level maps work well with four to seven main branches, each covering one heading or concept. If a branch needs more than about five sub-points, split it into two branches.

How do I choose branches for a biology chapter on cell structure?

Use the chapter headings for the main branches, such as membrane, nucleus, and organelles, and put individual structures and functions under each one. Keep every node to a short phrase you could explain from memory.

Can I export my mind map?

Exporting is a paid feature. The Free plan lets you study in the browser, and Plus adds PDF and DOCX exports along with unlimited generations.

Do I need a credit card to start?

No. You can start on the Free plan without a credit card, which includes 3 generations per month.

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Keep exploring the topic

Review the main ideas visually or practice recalling them.