Focus

Read with intention, one word at a time.

Focus is a distraction-free, customizable reading app built for speed readers, researchers, and anyone who wants to deeply engage with text. Upload PDFs, EPUBs, or paste text — then read in the mode that suits you best.

Features

4 Reading Modes

• Scroll — traditional scrolling with highlighted active words and context lines
• RSVP — rapid serial visual presentation, one word at a time at adjustable WPM
• Paragraph — centers the current sentence with surrounding context
• Highlight — book-like scrollable view with color-coded line proximity

File Support

• PDF — full text extraction with heading detection and embedded images/tables
• EPUB — e-book support with metadata, chapter hierarchy, and media
• Text — .txt, .md, .html, .htm, .xhtml, .rtf

Text-to-Speech

• Browser-native speech synthesis with language-aware voice selection
• Configurable rate (60–600 WPM), pitch, and volume
• Automatic fallback to timer-based playback if speech boundaries aren't available

Accessibility

• Dyslexia font (OpenDyslexic)
• Bionic reading — bolds the first part of words with adjustable strength
• Speed ramp — gradually accelerates to your target WPM
• Full keyboard navigation

Themes

6 built-in themes: Light, Dark, Sepia, Midnight, OLED, and Auto (system preference)

More

• Reading history with progress tracking
• Bookmarks
• In-document search
• Section/chapter navigator with auto-detection
• Embedded media (images, tables, YouTube videos, links)
• Zen mode for fully distraction-free reading
• Extensive keyboard shortcuts

Getting Started

npm install
npm run dev

Building

npm run build
npm run preview

Tech Stack

• SvelteKit + TypeScript
• Tailwind CSS
• PDF.js for PDF parsing
• JSZip for EPUB parsing
• Motion for animations