Turn your PDF or notes into an editable AI mind map
Upload a PDF, slides or typed notes and DeckOwl builds a mind map you can rearrange, expand and explore branch by branch.
How a NinjaChat-style mind map generator works
Starting from your own material, a NinjaChat-style AI mind map generator turns a lecture PDF or a page of notes into a branching map of main ideas and their supporting details.
- Keeps the structure of the original lecture or chapter
- Lets you rename, rearrange and delete any branch
- Expands and collapses branches to study one topic at a time
- Reads photos of printed pages with text recognition
Editable branches
Rename, move or delete any node so the map matches how your course organizes the material.
Explorable structure
Collapse and expand branches to focus on one topic at a time instead of scanning a crowded page.
Works from your files
Start from PDF, DOCX, PPTX, plain text or a photo of a page read with text recognition.
How it works
Upload your material
Add a PDF, slide deck, document, photo of notes or pasted text.
Generate the map
DeckOwl pulls out the main topics and the details that support them as connected branches.
Edit and explore
Adjust the layout, then expand each branch to test yourself on what sits beneath it.
A map is most useful when you can change it. Every node is editable, so you can merge overlapping branches, add your own examples and reorder topics to match your syllabus.
Because the map is built from the document you uploaded, the branches reflect what your instructor actually covered rather than generic filler, which makes it a better review tool than a blank page.
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Frequently asked questions
How many branches should a mind map for cell biology have?
Most useful maps have 5 to 7 main branches, such as organelles, transport, energy and cell division, with 2 to 4 details under each.
How do I study a mind map instead of just looking at it?
Cover one branch, recall its details out loud, then check yourself against the map. Work through each branch before moving on.
Can I export my mind map?
Exports such as PDF and DOCX are part of the Plus plan, which costs $99.90 a year or $9.99 a month. The free plan lets you create and study maps in the browser with 3 generations per month.
Does it work with photos of pages?
Yes. Photos of pages are read with text recognition before the map is generated, so clear, well-lit photos work best.
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Review the main ideas visually or practice recalling them.
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