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 โ one word at a time, right at the optimal recognition point, so your eyes never move and your reading speed skyrockets.
ย ย
Also available as a web app.
Most people want to read more โ 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 2โ3ร 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 โ and that everyone deserves access to tools that help them do both.
SpeederReader is and always will be:
- Free โ no subscription, no paywall, no ads
- Open source โ MIT licensed, built in the open
- Private โ your books never leave your device
- Universal โ PDF, EPUB, HTML, Markdown, and plain text on any platform
- Multilingual โ English and Spanish, auto-detected from your device settings
- RSVP reading โ words flash one at a time at your chosen speed (50โ750 WPM)
- ORP highlighting โ the optimal recognition point letter is highlighted in gold so your brain locks on instantly
- Flow mode โ automatically slows on punctuation to mirror natural reading rhythm
- Context strip โ a paragraph view above the word keeps you oriented in the text
- Word navigation โ step forward/backward word by word when paused
- Dictionary lookup โ tap "look up word" when paused to open any word in Dictionary.com
- Progress saving โ your place is saved automatically so you can pick up where you left off
- Page jumping โ jump to any page instantly
- Project Gutenberg browser โ search and load any of 70,000+ free books directly in-app
- Multiple formats โ PDF, EPUB, HTML, Markdown, plain text
- Works offline โ all parsing happens on-device; no server, no cloud
- English & Spanish โ full UI localization, auto-detected from device/browser settings
No install needed โ 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 emulatornpm 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 โ free to use, modify, and distribute. See LICENSE.
Read more books.