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Turn your notes into an online mind map you can explore

Upload a PDF, a DOCX, a slide deck, or plain notes, and DeckOwl builds a mind map with main topics and sub-points you can edit and click through.

Create mind maps nowFree · No credit card required

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

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

Why a mind map helps when you are studying

A long chapter is easier to review once it is laid out as an online mind map, with one central idea and related concepts branching out from it. You can see how topics connect instead of reading the same notes top to bottom again.

Keep the main idea in the center and related concepts on branches
Edit and reorder branches so the map matches your course
Expand and collapse sections to review from overview to detail
Convert the same material into flashcards or quizzes when you are ready to test yourself

Example HTTP and HTTPS study topics

HTTP request methodsGET retrieves a resource · POST sends data to create or act · PUT replaces a resource · DELETE removes a resource

HTTPS securityTLS encrypts the traffic · Certificates verify the server's identity · The default port is 443

HTTP status code classes2xx success · 3xx redirection · 4xx client error · 5xx server error

Cookies and sessionsCookies store small pieces of data in the browser · The browser sends them with later requests to the same site · Secure and HttpOnly flags limit access

HTTP vs HTTPSHTTPS is HTTP over TLS · Default ports are 80 and 443 · Browsers mark plain HTTP pages as not secure

Generate the full set

Starts from your own material

Upload PDFs, DOCX, PPTX, text notes, or photos of pages. The map is built from what you gave it, not from generic content.

Editable branches

Rename, move, or remove any branch so the map matches how your course organizes the topic.

Explore at your own pace

Expand and collapse branches to move from the big picture down to details, then turn the same material into flashcards or a quiz.

How it works

Upload your notes

Add a PDF, a document, a slide deck, plain text, or a photo of a page. Text in images is read with text recognition.

Generate the map

DeckOwl sorts the material into a central topic with main branches and sub-points.

Edit and explore

Adjust the branches you want, then expand and collapse sections to study from the overview down to the details.

Build the map from your own material so it reflects your lecture, your textbook, or your slides. Edit the branches that do not match your course, then move through the sections you still find confusing.

Free accounts can generate three maps a month and study in the browser. Plus adds unlimited generations and PDF, DOCX, Anki, and CSV export for when you need to share or print your study material.

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Frequently asked questions

How should I study HTTP and HTTPS for a networking exam?

Learn the request methods and status code classes first, then add what HTTPS changes, which is encrypting HTTP traffic with TLS. Map the connections between them so you can explain why a secure site uses port 443.

How do I memorize HTTP status codes?

Start with the five classes, 1xx through 5xx, and what each one means. Then learn the common codes in each class, such as 200, 301, 404, and 500, and quiz yourself on the ones you confuse.

Can I make a mind map from my own lecture notes?

Yes. Upload a PDF, DOCX, PPTX, text file, or a photo of your notes, and DeckOwl builds an editable map you can explore. The free plan includes three generations a month.

Is DeckOwl free to use?

The free plan gives you three generations a month and lets you study in the browser, but it does not include exports. Plus costs $39 per year or $7.99 per month and adds unlimited generations and PDF, DOCX, Anki, and CSV export.

Generate free mind maps

Keep exploring the topic

Review the main ideas visually or practice recalling them.