What Is Bionic Reading?
Bionic reading bolds the first few letters of each word to create fixation anchors. Your eyes lock onto the bold part and your brain fills in the rest - so you move through text with less effort.
Bionic-read anything on your phone
The free FastRead app turns any article, PDF or ebook into bionic text - read faster with less effort. iPhone & Android.
Scan to get the app - opens the App Store on iPhone/iPad, Google Play on AndroidHow bionic reading works
When you read fluently, you don't process every letter - your brain recognizes a word from its shape and first letters, then predicts the rest. Bionic reading leans into that: by bolding the opening letters, it gives your eyes a clear anchor on every word, so the path through a sentence is obvious and you spend less effort tracking your place.
Fixation anchors
Bold word-starts guide your eyes
Less effort
Your brain fills in the rest
Stay on the page
Fewer re-reads and zone-outs
Does bionic reading actually work?
Honest answer: the independent research is still early and results are mixed, so we don't promise a specific speed boost. The mechanism is sound, and reader response is strongly positive - especially from people with ADHD who report fewer zoning-out moments. The best test is your own eyes: paste a few paragraphs into the converter and see whether it helps you.
Try it on your own textBionic reading for...
Who it helps most, and how.
ADHD
Bionic Reading for ADHD: Stay Focused, Stop Re-Reading
Dyslexia
Bionic Reading for Dyslexia: Clearer Fixation, Less Fatigue
Students
Bionic Reading for Students: Read More, Retain More
Kids
Bionic Reading for Kids: A Gentler Way to Read
ESL Learners
Bionic Reading for ESL and Language Learners
Seniors
Bionic Reading for Seniors: Read More Comfortably, Stay Sharp
Bionic reading FAQ
What is bionic reading?
Bionic reading is a text-formatting method that bolds the first few letters of each word to create fixation points. Your eyes lock onto those bold anchors and your brain fills in the rest of the word, so you can move through text with less visual effort. It was popularized by Swiss designer Renato Casutt and went viral in 2022.
Does bionic reading actually work?
The independent research is still early and mixed, so we don't cite specific speed numbers. What's well established is the mechanism it leans on: skilled readers only need part of each word before the brain recognizes it, so a strong initial-letter cue can reduce the effort of tracking your place. Many readers - especially those with ADHD - report fewer zoning-out moments. Try it and judge for yourself.
Is the bionic reading converter free?
Yes. Paste any text into the FastRead bionic reader and it converts instantly, free and with no sign-up. The FastRead app (iPhone and Android) is also free and bionic-reads articles, PDFs and ebooks.
Is there a bionic reading font?
Bionic reading is an effect applied to normal fonts (bolding word-starts) rather than a single downloadable font. The easiest way to use it is the free FastRead bionic reader or the app, which apply the effect to any text you give them.
How do I use bionic reading on my phone?
Download the free FastRead app for iPhone or Android, then paste or open any article, PDF or ebook - it renders in bionic text automatically so you can read faster with less effort.
Keep exploring
Read faster everywhere with the app
Bionic-read any article, PDF or ebook on the go, save your library, and track your speed. Free to download.
Scan to get the app - opens the App Store on iPhone/iPad, Google Play on Android