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Turn your own notes into an editable concept map, free to start

DeckOwl builds a mind map from your PDF, DOCX, slides, or notes. Start on the free plan, study in your browser, and edit or explore the map as you learn.

Create mind maps nowFree · No credit card required

Free · First set needs no signup · Creates mind maps in seconds

Making a concept map online without starting from a blank page

Most free concept map tools make you draw every box and arrow yourself, which takes longer than the studying itself. If you want to make a concept map online free, it helps to start from the material you already have. DeckOwl reads your lecture notes or textbook chapter and proposes a central topic with linked branches you can check and change.

  • Works from PDFs, DOCX, PPTX, plain text, and photos of pages
  • Produces an editable mind map you can expand and explore
  • Free plan includes 3 generations a month with no credit card
  • Paid plans add unlimited generations and export options
Example nervous system mind map branches
Central nervous systemBrain · Spinal cord · Meninges · Cerebrospinal fluid
Peripheral nervous systemSomatic nervous system · Autonomic nervous system · Cranial nerves · Spinal nerves
Autonomic nervous systemSympathetic division (fight or flight) · Parasympathetic division (rest and digest) · Enteric nervous system
Neuron structureCell body · Dendrites · Axon · Myelin sheath
SynapsePresynaptic terminal · Synaptic cleft · Postsynaptic membrane · Neurotransmitter release
Generate the full set

Starts from your material

Upload a PDF, DOCX, PPTX, plain text, or a photo of a page. The map is built from what you already have, not from a generic template.

Editable and explorable

Expand or collapse branches, rename nodes, and move through the map to see how topics connect.

Free to start

The free plan includes 3 generations a month and browser study. No credit card is needed to begin.

How it works

Upload your notes

Add a PDF, document, slide deck, or photo of handwritten or printed pages.

Generate the map

DeckOwl pulls out the main topics and links them into a mind map with branches and sub-points.

Edit and study

Adjust any branch you want, then explore the map in the browser to test your recall of each connection.

Be clear about what you get. DeckOwl outputs a mind map: one central idea with branches that spread outward. That structure covers most concept map uses in class, such as showing how terms relate, though it is not a strict node-and-labeled-arrow diagram. You can still tidy the result by renaming nodes or moving branches.

The free plan is enough to try the workflow on a few chapters each month. Editing and exploring the map happen in the browser, so you can review it without installing anything.

Explore related topics

Frequently asked questions

How do I build a concept map of the nervous system?

Start with the central nervous system and peripheral nervous system as the main branches. Then add the brain, spinal cord, nerves, and the autonomic and somatic divisions, linking each to its function.

What should a nervous system concept map focus on?

Focus on the core structures and the relationships between them, such as how the brain sends signals through the spinal cord to peripheral nerves. Adding too many minor details makes the map harder to review.

Is the free plan enough to make a concept map online for free?

The free plan includes 3 generations a month and lets you study in the browser. It does not include exports, so you will need a paid plan to download your study material.

Can I export my map to other tools?

Exports are a paid feature. Plus includes PDF, DOCX, Anki, and CSV export, and Pro adds QTI 2.1 and Moodle XML export.

Generate free mind maps

Keep exploring the topic

Review the main ideas visually or practice recalling them.