Claude Speed Reader

What Is This?

Overview

Seanzor/claude Speed Reader is a productivity tool that integrates rapid serial visual presentation (RSVP) technology directly into the Claude AI interface. It enables users to consume Claude's text responses at speeds exceeding 600 words per minute by flashing words sequentially at a fixed focal point on screen. The tool applies Spritz-style optimal recognition point (ORP) highlighting, which aligns each word so the reader's eye naturally lands on the most cognitively efficient character position, reducing the need for eye movement and dramatically increasing reading throughput.

Traditional reading requires the eye to scan across lines, pause at multiple fixation points, and return to the start of each new line. This physical movement accounts for a significant portion of reading time. RSVP eliminates this overhead by presenting one word at a time in a single location, allowing the brain to process language at a much higher rate. The ORP technique, popularized by Spritz technology, further optimizes this by coloring a specific letter in each word red, giving the eye a consistent anchor point for faster recognition.

The extension works as a browser-based layer on top of Claude conversations, intercepting response text and feeding it through the speed reader interface. Users can adjust words-per-minute settings, pause, rewind, and resume at any point during playback, making it a flexible tool for different reading contexts and content complexity levels.

Who Should Use This

• Professionals who use Claude heavily for research, drafting, or analysis and need to process large volumes of AI-generated text quickly
• Students reviewing Claude-generated study materials, summaries, or explanations under time pressure
• Developers querying Claude for documentation, code explanations, or technical guidance and wanting faster response consumption
• Content creators who use Claude to generate drafts and need to review output efficiently before editing
• Power users of AI assistants who want to maximize the information throughput of their Claude sessions
• Accessibility-focused users who benefit from a focused, distraction-free single-word reading format

Why Use It?

Problems It Solves

• Standard Claude responses can be lengthy, and reading them at average speeds of 200 to 250 WPM creates a bottleneck in AI-assisted workflows
• Eye fatigue from scanning long blocks of text across a wide browser window reduces comprehension over extended sessions
• Users frequently lose their place in long responses, requiring re-reading and wasting time
• There is no native speed control in Claude's interface, leaving users with no option to accelerate consumption of familiar or straightforward content

Core Highlights

• Delivers RSVP playback at 600 WPM and above, with user-configurable speed settings
• Applies Spritz-style ORP highlighting to anchor the eye at the optimal recognition character in each word
• Integrates directly with the Claude web interface without requiring a separate application
• Supports pause, rewind, and resume controls during playback
• Works on full Claude response text including technical content, lists, and prose
• Lightweight browser extension architecture with minimal performance overhead
• Adjustable WPM slider allows users to match speed to content complexity

How to Use It?

Basic Usage

After installing the extension from the source repository, load a Claude conversation in your browser. When Claude returns a response, a speed reader control bar appears near the response. Click the play button to begin RSVP playback. Use the WPM slider to set your preferred reading speed before or during playback.

// Example: Accessing the extension settings object in the browser console
chrome.storage.sync.get(['wpm', 'enabled'], (settings) => {
  console.log('Current WPM:', settings.wpm);
  console.log('Extension enabled:', settings.enabled);
});

Specific Scenarios

For technical documentation responses, set WPM between 300 and 400 to allow time to process code-adjacent terminology. For conversational or summary responses, push the slider to 600 WPM or higher. When reviewing a long multi-section response, use the rewind control to replay any segment where comprehension dropped.

Real-World Examples

A developer asking Claude to explain a new API can speed-read the overview at 500 WPM, then slow down manually when reaching code examples. A student reviewing a Claude-generated essay outline can process the full structure in under 30 seconds at 600 WPM before diving into detail.

Important Notes

Requirements

• A Chromium-based browser supporting extension installation from source
• An active Claude account with web interface access
• Node.js if building the extension locally from the repository source
• Basic familiarity with loading unpacked browser extensions via developer mode