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Turn your notes into an editable mind map online

Upload a PDF, DOCX, slide deck or photo of your notes. DeckOwl builds a mind map you can edit, expand and explore branch by branch. No credit card needed to start.

Create mind maps nowFree · No credit card required

Free account · 3 sets a month · Creates mind maps in seconds

Why a mind map beats a list of notes for big topics

Staring at forty pages of lecture notes with no sense of what connects to what is the moment most students reach for a map. Learning how to make a mind map online is quicker than most people expect, because the software can build the first draft from your own material while you decide what matters.

  • Upload the source you already have instead of retyping notes
  • Keep the central topic broad and let branches carry the detail
  • Edit branches after generating, since the first draft is a starting point
  • Turn the finished branches into flashcards or a quiz to test recall
Example Roman Empire mind map branches
Augustus and the PrincipateBecame the first emperor in 27 BCE · Kept Senate forms and republican titles · Began the Pax Romana
Crisis of the Third Century (235–284 CE)Repeated civil wars · Rapid turnover of soldier-emperors · Plague and currency debasement strained the economy
Diocletian's reformsCreated the Tetrarchy to share rule · Split administration between East and West · Issued the Edict on Maximum Prices in 301
Fall of the Western EmpireRomulus Augustulus deposed in 476 CE · Heavy reliance on federate armies · Loss of tax-rich provinces such as Africa
Roman roads and infrastructureLinked provinces for armies and trade · Milestones marked distances · Aqueducts supplied cities including Rome
Generate the full set

Starts from your own material

Upload PDFs, DOCX, PPTX, plain text or photos of pages. The map is built from what you already have, not a generic template.

Editable branches

Rename, move or add nodes as your understanding changes, so the map stays useful after the first draft.

Explore at your pace

Expand one branch at a time to focus on a single idea, then step back to see how the whole topic connects.

How it works

Upload your notes

Add a PDF, DOCX, PPTX, text file or a photo of a page. Text recognition reads the images.

Generate the map

DeckOwl pulls the main ideas into a central topic with branches and sub-points.

Edit and explore

Reshape the branches, then open each one to study it in the browser.

A useful map puts one central idea in the middle and gives each main branch a single heading, such as a period, a cause or a person. Sub-points stay short, usually a phrase rather than a sentence, so you can scan the whole structure at once and still recall the detail when you open a branch.

Start with the map, then turn each branch into questions. Free accounts can study in the browser, and paid plans add exports to PDF, DOCX, Anki and CSV so the material can move into other tools.

Explore related topics

Frequently asked questions

How many branches should a mind map have?

Most useful maps for a single chapter have four to seven main branches, each with two to five sub-points. Fewer branches usually means the topic is too broad, and more often it means the map needs splitting into two.

How do I make a mind map for the Roman Empire?

Start with the Roman Empire at the center, then add branches for periods such as the Republic, the Principate and the Crisis of the Third Century, plus themes like government, army and roads. Fill each branch with causes, key figures and dates.

Is the online mind map generator free?

The Free plan includes 3 generations per month and studying in the browser. Exports are part of the paid Plus plan at $99.90/year or $9.99/month, and students can get 40% off with a school email.

Do I need a credit card to start?

No. You can start on the Free plan without a credit card and upgrade later if you need unlimited generations or exports.

Generate free mind maps

Keep exploring the topic

Review the main ideas visually or practice recalling them.