Read 2–3× Faster
Without Sacrificing
Comprehension

ReadFlow uses science-backed bionic reading, RSVP speed technology, and focus modes to help you absorb more, remember better, and read any article in half the time.

200K+
Active Users
4.8★
Average Rating

10 Powerful Reading Tools

Everything you need to read smarter, faster, and better.

Bionic Reading

Bolds the most important letters in every word so your brain auto-completes text 2–3× faster.

RSVP Speed Reader

Flashes one word at a time at your target WPM. Eliminate subvocalization instantly.

📖

Reader Mode

Strip away ads, popups, and clutter. Enjoy a clean, customizable reading view.

🔦

Line Focus Mode

Dim everything above and below your reading line. Stay locked in, zero eye drift.

🖊

Text Highlighter

Highlight in 5 colors. Highlights persist and restore every time you revisit a page.

🔤

Dyslexia Mode

Optimized font with wider spacing. Proven to improve readability for dyslexic readers.

🌙

Dark Mode Overlay

Force dark mode on any website instantly. Perfect for late-night reading sessions.

Auto-Scroll

Smooth hands-free scrolling. Focus on reading, not your mouse or keyboard.

📊

Speed Test

Measure your WPM with a built-in timed test. Track improvement over time.

📏

Progress Bar

See exactly how far through an article you are. Never lose your place again.

🔒
100% Private
Zero data collection
Fully Customizable
Tune every setting
🚀
Blazing Fast
No slowdown
💻
Works Everywhere
All websites

Why Choose ReadFlow?

Feature ReadFlow Spreed Beeline Reader Standard Browser
Bionic Reading
RSVP Speed Reader
Reader Mode
Line Focus
Text Highlighter ✓ (persistent)
Dyslexia Mode
100% Private
Price Free $4.99/mo $9.99/mo Free

Loved by Readers Worldwide

Join 200,000+ users reading smarter, every day.

⭐⭐⭐⭐⭐

"I've tried every speed reader out there. ReadFlow is by far the best. The bionic reading feature actually works, and the highlighting system is genius."

SM
Sarah Mitchell
Business Analyst, NYC
⭐⭐⭐⭐⭐

"As a dyslexic reader, this extension changed my life. The dyslexia mode + bionic reading means I can finally read at normal speed without exhaustion."

JC
James Chen
Graduate Student, Boston
⭐⭐⭐⭐⭐

"Zero data collection, no signup required, completely free. This is how browser extensions should be. ReadFlow is a breath of fresh air in a privacy-invasive landscape."

AR
Alex Rodriguez
Privacy Advocate
⭐⭐⭐⭐⭐

"I'm a researcher and I read ~50 papers a month. ReadFlow's speed reader + persistent highlights cut my reading time in half while keeping my annotations."

EM
Dr. Emma Lewis
AI Researcher, London
⭐⭐⭐⭐⭐

"My teenage daughter uses it for school. Her reading comprehension went up while her study time went down. This is a game-changer for students."

PM
Patricia Morgan
Parent, Toronto
⭐⭐⭐⭐⭐

"I'm a content creator and I read news all day. ReadFlow lets me skim fast with bionic reading, then dive deep with reader mode when something matters."

NK
Nora Kim
Journalist, Seoul

Frequently Asked Questions

How does Bionic Reading work?
Bionic Reading works by bolding approximately 40–50% of each word (the first 1–3 letters plus strategically important letters). Your brain uses these anchor points to auto-complete the word instantly, allowing you to process text 2–3× faster than normal reading while maintaining full comprehension. This is based on cognitive science research about how our brains recognize word shapes.
Is my data collected or sold?
Absolutely not. ReadFlow collects zero data. All your settings, highlights, reading statistics, and saved articles are stored 100% locally on your device using Chrome's storage APIs. Nothing is ever sent to external servers, sold to third parties, or used for tracking. We have no accounts, no login, and no back-end services.
Does it work on all websites?
Yes! ReadFlow works on virtually all websites — news sites, blogs, Wikipedia, documentation, academic papers, and more. The only exceptions are Gmail, Google Docs, and a few other Google services that have strict security policies. If you find a site where ReadFlow doesn't work as expected, please let us know.
Can I adjust the Bionic Reading strength?
Yes! Every feature in ReadFlow is customizable. You can adjust the bionic reading strength from 0% (off) to 100% (maximum boldness), RSVP speed from 50–600 WPM, reader mode fonts and sizes, line focus band width, auto-scroll speed, and more. All settings are saved to your device.
How do I use keyboard shortcuts?
ReadFlow includes four keyboard shortcuts for quick access: Alt+B (toggle Bionic Reading), Alt+R (toggle Reader Mode), Alt+S (start RSVP Speed Reader), and Alt+P (toggle Progress Bar). On Mac, use MacCtrl instead of Alt. You can also customize these shortcuts in your Chrome settings.
What's the difference between RSVP and normal reading?
RSVP (Rapid Serial Visual Presentation) flashes one word at a time in a fixed position at your target speed. This eliminates eye movement and subvocalization, letting you read much faster. Normal reading involves your eyes jumping across the page. RSVP is great for speed; bionic reading is better for deep comprehension. Use both or either depending on your goal.
Can I highlight text and save it?
Yes! Enable the Text Highlighter mode, then select any text on a page to highlight it. Choose from 5 highlight colors. Your highlights are saved locally and will automatically reappear the next time you visit that page, even weeks later. You can also view and manage all your highlights from the ReadFlow popup.
Does this slow down my browser?
No. ReadFlow is extremely lightweight (under 100KB) and only activates when you explicitly trigger a feature. It uses efficient JavaScript and doesn't monitor or scan pages in the background. Thousands of users report zero impact on browser performance.
Is ReadFlow free forever?
Yes, ReadFlow is 100% free and will always be free. We don't have a premium tier, ads, or paywalls. We built this extension because we believe everyone deserves to read faster and smarter, regardless of income. No catches.

Ready to Read 2–3× Faster?

Join 200,000+ readers already transforming how they absorb information.

⬇ Install ReadFlow for Free

No sign-up. No data collection. Works instantly.