Read them faster, understand them better, and never lose your place.

SpeederReader is a free, open-source speed reading app built on the RSVP (Rapid Serial Visual Presentation) technique — one word at a time, right at the optimal recognition point, so your eyes never move and your reading speed skyrockets.

Also available as a web app.

Most people want to read more — more books, more long-form writing, more of the things that matter. But life gets in the way. SpeederReader exists to close that gap.

By training your brain to read at 2–3× your natural pace, a 300-page book that once took two weeks can be finished in a weekend. We believe reading deeply and reading quickly are not opposites — and that everyone deserves access to tools that help them do both.

SpeederReader is and always will be:

• Free — no subscription, no paywall, no ads
• Open source — MIT licensed, built in the open
• Private — your books never leave your device
• Universal — PDF, EPUB, HTML, Markdown, and plain text on any platform
• Multilingual — English and Spanish, auto-detected from your device settings

• RSVP reading — words flash one at a time at your chosen speed (50–750 WPM)
• ORP highlighting — the optimal recognition point letter is highlighted in gold so your brain locks on instantly
• Flow mode — automatically slows on punctuation to mirror natural reading rhythm
• Context strip — a paragraph view above the word keeps you oriented in the text
• Word navigation — step forward/backward word by word when paused
• Dictionary lookup — tap "look up word" when paused to open any word in Dictionary.com
• Progress saving — your place is saved automatically so you can pick up where you left off
• Page jumping — jump to any page instantly
• Project Gutenberg browser — search and load any of 70,000+ free books directly in-app
• Multiple formats — PDF, EPUB, HTML, Markdown, plain text
• Works offline — all parsing happens on-device; no server, no cloud
• English & Spanish — full UI localization, auto-detected from device/browser settings

No install needed → https://app.speederreader.org/

git clone https://github.com/your-username/speeder-reader.git
cd speeder-reader
npm install
npm start          # opens Expo dev server
npm run web        # web browser
npm run ios        # iOS simulator
npm run android    # Android emulator

npm run build:web  # outputs to ampt-backend/static/

• Expo SDK 52 / React Native 0.76
• TypeScript
• PDF.js v3 (in-browser PDF parsing via WebView/iframe)
• JSZip v3 (EPUB unzipping)
• expo-localization (device/browser locale detection)
• Project Gutenberg API (free book catalog)
• Ampt (web hosting + CDN)

SpeederReader is open source and welcomes contributions. See markdown/CONTRIBUTING.md for guidelines.

MIT — free to use, modify, and distribute. See LICENSE.

Read more books.