A PDF reader that remembers

Every excerpt
remembers
its page.

Pull passages from any PDF, link the ones that relate, and click a note to jump straight back to its page.

Marginalia showing a PDF open beside a notes canvas with three linked excerpt cards

How it works

Three moves. That's the whole app.

Two passages highlighted in a PDF, ready to be pulled onto the notes canvas Two note cards connected by a labeled, arrowed thread reading Supports
01

Pull a passage, not just a highlight

Drag a marquee over any line, even on a scanned page with no selectable text, and it lands on your notes canvas as its own card.

02

Link what relates, and say how

Drag between two cards to connect them, then label the thread: supports, contradicts, references, or your own word. Reverse or delete it any time.

03

Click a note, land on its page

Every card remembers the document and page it came from. One click opens the PDF at that exact spot.

Two passages highlighted in a PDF, ready to be pulled onto the notes canvas
01

Pull a passage, not just a highlight

Drag a marquee over any line, even on a scanned page with no selectable text, and it lands on your notes canvas as its own card.

Two note cards connected by a labeled, arrowed thread reading Supports
02

Link what relates, and say how

Drag between two cards to connect them, then label the thread: supports, contradicts, references, or your own word. Reverse or delete it any time.

03

Click a note, land on its page

Every card remembers the document and page it came from. One click opens the PDF at that exact spot.

No account. No upload.

Everything stays on your device.

Your PDFs and notes are stored in your browser's IndexedDB, not on a server. Nothing is uploaded, there's nothing to sign up for, and the code is open source, so you can check for yourself.

Export

Your notes, ready for your AI.

Export a canvas as one Markdown file: every excerpt, the page it came from, your own notes, and how each one connects. Give it to ChatGPT or Claude along with the PDF, and it reads your thinking as well as the source.

link-map.md source.pdf your AI
  • “Summarize my argument in five bullets.”
  • “Where do my notes contradict each other?”
  • “Quiz me on this chapter.”

Every excerpt remembers its page. Yours can too.

Open the app

Free and open source (MIT). View the code on GitHub.

Buy me a coffee

Free forever, no ads. A coffee keeps it that way.