Now available for Windows

Read anything.
Keep everything.

Pagedge is a PDF reader with a memory. Highlight in four colors, take notes as you go, and chat with an AI that's actually read everything you have.

Free forever plan · No account required to start reading

The highlight system

Four colors. Four types of thinking.

Most readers treat every highlight the same, and that's why they forget them. In Pagedge, each color carries intent, and the whole app is built around it.

Yellow

Important · Key concepts

Mark the ideas that matter, then ask the AI to summarize what you found important, one chapter at a time or across the whole document.

Blue

Confused · Revisit

Flag what you don't understand yet, then come back to it later or have the AI explain it in plain language.

Green

Add to flashcards

Turn any highlight into a flashcard, auto-generated by AI. Grade your own confidence (low, medium, mastered) right inside the app. Reading becomes retention.

Pink

Quotes worth keeping

Save the lines worth remembering, then pull every quote you've collected (one book, or your whole library) into one place with a click.

Beyond the page

Built for how you actually read.

It's more than a viewer. It gets smarter as your library grows, and everything you highlight or note becomes something Pagedge can search, explain, and quiz you on.

01

Every highlight becomes part of a living map.

Pagedge quietly connects your documents, notes, flashcards, and tags as you build your library, surfacing related ideas automatically, even between PDFs you highlighted months apart. It's the part of your knowledge that search can't reach on its own.

Documents Notes Flashcards Tags
02

Chat with a PDF that knows what you care about.

Ask anything about a document and get answers with page citations. Pagedge feeds your highlights to the AI as context, so its answers are shaped by what mattered to you, not just what's on the page.

What did I highlight as confusing in chapter 3?
You flagged two passages on page 41 about entropy, and one on page 44 about the second law. Want me to explain them together?
p. 41 · p. 44
03

Find the passage you half-remember.

Semantic search covers everything you've ever highlighted or noted, and it searches by meaning, not just keywords. That idea from three PDFs ago is always one vague description away.

"…each additional unit of input yields a smaller increase in output…"Econ 101 Notes · p. 12
"…marginal utility decreases as consumption increases…"Microeconomics.pdf · p. 58
04

Highlights that quiz you back.

Green highlights become AI-written flashcards, graded by how well you actually know them. You don't export them to another app or write them by hand, and there's no due date to manage.

What does System 1 optimize for?
Coherence of the story it can construct — not the quality or quantity of the evidence.
Low confidence Getting there Mastered
05

Your annotations, in a real PDF.

Every highlight, drawing, and text box gets baked into a standard PDF file you can share with anyone. Opens fine in any PDF viewer, no Pagedge required.

Exported — annotated.pdf

Jumping to conclusions is efficient if the conclusions are likely to be correct. System 1 is radically insensitive to the quality and quantity of information. When information is scarce, it operates as a machine for jumping to conclusions — and poor evidence can make a very good story.

"You don't remember what you read. You remember what you did with what you read."
— The idea behind Pagedge
Pricing

Start free. Stay free, if you like.

The full reader, highlight system, and notes are free forever. Pro unlocks unlimited AI calls and no context cap.

Free
$0 / month
  • Full PDF reader
  • Unlimited library size
  • 4-color highlight system
  • Notes editor
  • 15 AI calls per month
  • Semantic search
  • Flashcards
Download free
For serious readers
Pro
$5 / month
  • Unlimited AI calls
  • Unlimited context length
  • Everything in Free
  • Priority features
  • Cloud sync across devices
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Reading on a Mac?

The macOS version is on the way. Leave your email and we'll let you know the moment it's ready.