Explore your notes as a mind map in your browser, free
DeckOwl turns your lecture notes, PDFs, and slides into an editable mind map you can open, expand, and collapse in one place.
What a mind map viewer should show you
A free mind map viewer is most useful when the map was built from the material you are actually studying. A blank diagram tool makes you do the sorting yourself, but a map generated from your lecture notes already shows how the topics connect.
- Start with the central topic, then open one branch at a time.
- Check each sub-point against your original notes or textbook.
- Edit wording or add missing ideas so the map reflects your course.
- Turn a branch into flashcards or a quiz when you need practice.
Browse by branch
Open the main topics first, then expand only the sub-points you need to review.
Edit as you go
Rename nodes, move ideas, and add your own notes so the map matches your course.
Start free
The Free plan includes 3 generations a month and lets you study the map in the browser. No credit card needed.
How it works
Upload your material
Add a PDF, DOCX, PPTX, plain text notes, or a photo of a page.
Generate the map
DeckOwl reads the text and builds a mind map with a central topic and labeled branches.
Explore and study
Click through the branches, edit anything that looks off, and quiz yourself on each section.
Good exploration means you can move from the big idea to the supporting facts without losing your place. Start with the main branches, check that each one matches your notes, and then open the sub-points that feel shaky. Repeating this a few times is often faster than rereading the whole chapter.
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Frequently asked questions
How do I study from a mind map instead of rereading notes?
Cover the sub-points and try to recall each one from its branch label. Then reveal the map and check what you missed, repeating the weakest branches first.
How many branches should a mind map have for one lecture?
Most lectures work well with 4 to 7 main branches, each with 2 to 4 sub-points. If a branch has more, split it into two narrower topics so it is easier to review.
Can I download my mind map for free?
The Free plan lets you study the map in the browser, but exports are not included. PDF, DOCX, and Anki export are on Plus, which costs $39/year or $7.99/month.
How many maps can I generate on the free plan?
The Free plan includes 3 generations per month. Plus removes that limit with unlimited generations.
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