QPaper

About

Open a PDF. Ask anything.

QPaper gives you a complete PDF reader and an AI that uses your document as a knowledge base — retrieving relevant content in real time to answer your questions. No file uploads. A free trial is available. Your PDFs stay in your browser.

Whether you're working through research papers, legal documents, study materials, or technical reports — QPaper keeps up.

── THE READER ──

📄 A full PDF viewer, nothing stripped out
Zoom, table of contents, full-text search, and presentation mode. Everything you expect, exactly where you expect it.

🖊️ Annotation tools that go beyond the default viewer
Highlight, draw, leave sticky notes — choose colors, adjust brush size, and pin notes to specific pages. Everything is baked into standard PDF format, visible in any PDF viewer.

── THE COMPANION ──

🤖 An AI that was there from page one
The AI knows your current page and uses your whole document as a knowledge base to answer in real time. You don't need to explain what the document is — it's already there.

🔗 Click any page citation to preview it
When the AI references a specific page, click the citation to open a floating preview — without losing your place.

📝 Markdown notebook
A cross-document, auto-saving note space. Save any AI response with one click — and when you ask follow-up questions, relevant notes are automatically included.

📚 Ask across a whole folder of PDFs
Group multiple documents together. Your companion reads across all of them, draws connections between papers, and answers questions that span sources — ideal for literature reviews, research, and multi-source studying.

── PLANS ──

Try it free.

Free        — basic monthly quota, Fast models
Basic       — Standard quota, Fast + Balanced models
Pro         — Larger quota, all model tiers
Unlimited   — No usage cap, all models including Advanced

Full details and pricing at qpaperapp.com/pricing.

QPaper does not collect your browsing history. Page content is only sent to AI providers when you explicitly send a message.