Free · Local-first · No signup

Turn Any PDF Into Notes, Quizzes & Flashcards

StudyMind AI is an intelligent document learning platform that runs entirely in your browser. Drop in a PDF and get structured summaries, exam-ready notes, quizzes, flashcards and plain-English explanations in seconds — with nothing uploaded, nothing tracked and no account required.

Launch Tool See how it works
100% local PDF parsing No account, no email Works on low-end devices Open source (Apache 2.0)
Everything included

One tool for the whole study loop

Upload a document once and every AI mode becomes available — read it, understand it, test yourself on it and revise it, all without leaving the page.

Document library

Drag-and-drop multi-file upload with local text extraction, layout and element detection, plus an inline PDF reader with full page navigation.

Structured summaries

Get a clean, sectioned breakdown of the whole document instead of a wall of text — fast to skim before a class or an exam.

Question & answer

Ask anything and get an answer grounded in the actual extracted content of your document, not a generic guess.

Study notes

Full notes you can style, file into folders, tag, pin, rename, search and bulk-manage — all saved locally in your browser.

Plain-English explains

Dense, jargon-heavy passages rewritten so the idea actually lands — ideal for textbooks and lecture slides.

Five quiz types

Multiple choice, true/false, fill-in-the-blank, case study and HOTS (higher-order thinking) questions, with instant feedback and scoring.

Flashcards

Revise with active recall, spaced revision and exam-brainstorm modes — flipping cards until the concept sticks.

Gap analysis

A learning path built from what the material actually covers, so you know exactly which topics to revise next.

Exam optimizer

An exam-focused analysis of your material: what is likely to be tested, what is high-yield and what to skip.

AI chat assistant

A floating helper with text-selection actions, per-note chat history and one-tap regeneration of any answer.

One-click study pack

Summary, notes, quiz and flashcards together in a single generation — a complete revision pack in one action.

Private & self-checked

Optional AI self-review verifies the output against the source, while every byte of your material stays on your own device.

How it works

From PDF to revision in three steps

No installation, no account, no server round-trip for your files. The heavy lifting happens on your own machine.

Step one

Drop your document

Add one or many PDFs by drag-and-drop or file picker. Text is extracted in the browser with pdf.js, preserving layout, font sizes and element structure.

Step two

Pick a mode

Choose summary, notes, quiz, flashcards, simplification, Q&A, study pack, gap analysis, exam optimizer, comparison or chat — and optionally add your own prompt.

Step three

Learn and revise

The response arrives as clean markdown with rendered maths, is sanitized before it touches the page, and can be saved to your local library instantly.

0AI modes in one tool
0Question types in quizzes
0Data sent to a StudyMind server
0Accounts or sign-ups
AI modes

Every mode, explained plainly

Each mode is a focused prompt against your own document, so the output stays on-topic and usable straight away.

Summary

A structured, section-by-section breakdown of the entire document.

Q&A

Answers grounded strictly in the extracted content of your file.

Study notes

Full revision notes, stylable and savable into folders and tags.

Simplify

Complex passages rewritten in clear, plain English.

Quiz

MCQ, true/false, fill-in-the-blank, case study and HOTS questions.

Flashcards

Active recall, revision and exam-brainstorm revision modes.

Study pack

Summary, notes, quiz and flashcards together with a single click.

Gap analysis

A learning path based on what your material actually covers.

Exam optimizer

An exam-focused analysis of what to prioritise in the material.

Comparison tables

Topics lined up side by side for quick contrast.

AI chat

A floating assistant with selection actions and per-note history.

Self-review

Optional verification of the AI output against the source text.

Who it is for

Built for people who actually read

Any document-heavy workflow benefits: turn reference material into a revision asset instead of a folder you never open again.

Students

Turn lecture notes and textbooks into summaries, revision notes and self-testing quizzes before the exam.

Researchers

Summarise papers, extract key points and build comparison tables across many documents at once.

Teachers

Generate quizzes, flashcards and simplified explanations from any handout, then export and reuse them.

Professionals

Digest long reports, manuals and contracts locally, with nothing confidential leaving your machine.

Privacy & security

Your documents never touch a server

StudyMind AI has no backend, no database and no user accounts. The app is a set of static files, and everything that can be done on your device is done on your device.

  • PDFs are parsed in the browser with pdf.js — the file itself is never uploaded anywhere.
  • Notes live in IndexedDB and your API key in localStorage — both on your device only.
  • No analytics, no cookies, no telemetry and no third-party trackers of any kind.
  • All AI output is sanitized with DOMPurify before it is rendered, and a strict Content-Security-Policy is enforced.
  • One-click data wipe in Settings clears your key, notes, chats and consent record instantly.
Read the privacy policy
Your PDFStays in your browser — parsed locally with pdf.js
Browser
Extracted textSent only when you trigger an AI action, with your own key
Direct HTTPS
OpenRouterProcesses the request under their policy — StudyMind never sees it
No StudyMind server exists — so there is no database to breach, sell or sync, and no activity of yours to log.
Under the hood

Fast, offline-friendly and self-hosted

Every dependency is vendored in the project itself, so the app runs without a single CDN request at runtime.

Vendored libraries

  • pdf.js — PDF parsing and rendering
  • marked — Markdown rendering
  • KaTeX — maths typesetting
  • DOMPurify — output sanitization

Performance

  • Automatic lite mode on slow networks and low-RAM phones
  • Off-screen sections skipped via content-visibility
  • Animation limited to transform and opacity
  • Fully honours prefers-reduced-motion

Browser support

  • Chrome, Edge, Firefox and Safari (current + recent)
  • Desktop, tablet and mobile
  • JavaScript required; works from file:// or any static host
  • No build step, no bundler, no framework

Your data

  • API key → localStorage
  • Notes & chats → IndexedDB
  • Export your library as JSON at any time
  • Offline reading, notes and flashcards
FAQ

Questions, answered

The things people ask before they upload their first PDF.

Is StudyMind AI really free?

Yes. The application is free, with no ads, no subscriptions and no paywalls. The only optional cost is the AI provider usage you pay for directly with your own OpenRouter API key — and many free OpenRouter models are available if you would rather pay nothing.

Do you upload my PDF or store my documents?

No. PDFs are parsed inside your browser with pdf.js, so your files are never uploaded to a StudyMind server — because no such server exists. Your notes live in your browser’s IndexedDB and your API key in localStorage.

What actually leaves my device?

Only the text extracted from your PDF, and only when you trigger an AI action. It is sent directly from your browser to OpenRouter and authenticated with your own API key. StudyMind never receives, stores or logs it. The full details are in the privacy policy.

Do I need an account or an API key?

No account is ever required. You can read, organise and search documents without a key. To generate AI output, add your own OpenRouter API key — it is saved only in your browser’s localStorage and can be deleted at any time.

Can I use it on a slow or low-end device?

Yes. The app ships a lite mode that switches on automatically on slow connections, low-memory devices and low-core phones, trimming shadows, blur and animation work. The tool is a single static page with no build step and no CDN dependency, so it also loads quickly on a weak connection.

Which AI modes are included?

Summary, question & answer, study notes, plain-English simplification, quizzes (MCQ, true/false, fill-in-the-blank, case study and HOTS), flashcards with active recall, revision and exam-brainstorm modes, a one-click study pack, knowledge gap analysis with a learning path, an exam optimizer, comparison tables, an AI chat assistant and optional self-review of the output.

Is the code open source?

Yes — the source code is released under the Apache License 2.0, as shown on the license page. The Quantivelle name and logo are trademarks and are not covered by that license; forks must rename the app and remove the branding, as described in the trademark guidelines.

Do I need an internet connection to study?

Only for AI generation. Reading PDFs, taking notes, searching your library, using flashcards and reviewing saved output all work offline once the page is loaded, because everything is stored locally in your browser.

Ready when you are

Open the tool and turn your next PDF into a study pack

Free, private, and ready in one click. No install, no signup, no waiting.

Launch Tool See all features