Read faster with bionic text.
Bionic reading bolds the beginning of words so your brain recognizes them faster.
Works on any website, EPUB, or PDF.
Bionic reading guides your eyes through text more efficiently. Your brain recognizes each word faster because it can complete the word from the bolded beginning.
Why reading online is exhausting
The problem isn't your attention span.
It's that text has no visual guides.
Your eyes wander
Without visual anchors, your eyes drift across the page. Every word requires the same mental effort.
accommodate
parsing letter by letter
Slow word recognition
Your brain processes each word from scratch. Long words take longer. It's exhausting.
Constant re-reading
You read the same sentence three times without realizing. Nothing sticks.
After 5 minutes of reading
Mental fatigue
Reading feels like a chore. Your brain is doing too much work just to decode each word.
47 tabs open, 0 articles finished
You give up
Articles pile up. Books go unfinished. You save things “for later” that never comes.
Nook is built for faster, focused reading.
Bionic text plus a suite of tools
to help you read faster and stay focused.
Bionic reading guides the eye through text.
Bionic Text
Highlights word beginnings so your brain recognizes words faster with less effort.
Autopace
Text moves at your rhythm so you always have a guide to follow. No more losing your place.
Large walls of text are hard to track and easy to lose focus on. When you face a dense block of information, your brain naturally feels overwhelmed before you even begin reading.
Breaking content into bite-sized chunks improves comprehension significantly. By focusing on one piece at a time, you reduce cognitive load and absorb information more effectively.
Your brain processes information faster when it's not overwhelmed. This method keeps your momentum going, preventing the urge to skim or skip important details.
Paragraph Chunking
Breaks walls of text into smaller, manageable pieces so you never feel overwhelmed.
One line at a time
keeps your focus
sharp and clear.
Line Tracking
Focus on one line at a time to prevent skipping lines and losing your place.
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Specialized Fonts
Choose from 7 fonts including OpenDyslexic, Atkinson Hyperlegible, and Lexend.
Relax your eyes
Calm Backgrounds
Reduce eye strain with softer colors. Cream, sepia, dark mode, and more.
From our
community on
Here's what other users had to say about Nook.
AutoPace is a game-changer. I no longer lose my place while reading, and I've actually finished three books this month!”
Why readers love bionic text
Read 2x faster
Bionic fixation points guide your eyes faster through text. Finish more in less time.
Less mental effort
Your brain completes words from bolded beginnings, reducing cognitive load.
Better focus
Visual anchors keep your eyes on track. Less wandering, more comprehension.
Finish what you start
Reading feels easier, so you're more likely to complete articles and books.
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Customizable
Adjust fonts, colors, speed, and spacing to match your reading style.
Zero distractions
Clean reading view strips away ads and clutter. Just you and the text.
Frequently asked questions
Everything you need to know about bionic reading
Bionic reading is a method that bolds the first few letters of each word, creating artificial fixation points. Your brain recognizes word patterns faster because it can complete the word from the bolded beginning, allowing you to read more quickly and with less mental effort.
Many readers report improved reading speed and focus with bionic text. It works by guiding your eyes through text more efficiently, reducing the mental effort needed to recognize each word. The best way to know if it works for you is to try it — Nook offers a free 7-day trial.
Yes! Nook is free to install and includes 7 days of full access to all features including bionic reading. No credit card required. After that, you can choose to subscribe or continue with basic features.
Many people with ADHD find bionic reading helpful because it provides visual anchors that keep their eyes moving forward. Combined with Nook's other features like autopace and chunking, it can significantly improve focus and reading completion rates for ADHD readers.
With Nook, you can import EPUB books and read them with bionic text enabled. You can also import PDFs and any web article. Nook works as a Chrome extension, so any long-form content on the web can be transformed into bionic text.
After installing the Nook Chrome extension, simply click the extension icon on any article or webpage. In the reading view, tap the settings icon and toggle on 'Bionic Text'. It works instantly on any content.
Yes! Nook can extract text from PDFs and display it with bionic formatting. Simply upload your PDF to Nook and enable bionic text in the settings. This works great for research papers, documents, and ebooks in PDF format.
Nook is a Chrome extension that includes bionic reading along with other reading enhancement features. It works on any website, article, or long-form content. You can also import EPUBs and PDFs directly.
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