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Free Bionic Reading Converter

Convert any text to bionic reading format — the first letters of each word are bolded to help your eyes focus and read faster.

Runs in your browserNo sign-up, no pop-upsNo login requiredFree forever

Text to convert

649 characters · 105 words

Fixation amount (50%)

Higher = more letters bolded per word

Font size (16px)

Bionic preview

Reading is a complex cognitive process of decoding symbols to derive meaning. Bionic Reading is a method of typographically representing text that aims to facilitate the reading process by guiding the eyes through it with artificial fixation points. The reader focuses only on the highlighted initial letters, while the brain completes the word.

This is not the same as speed reading. The technique was developed by Swiss typographic designer Renato Casutt in 2016 and has been popularized by various reading apps. Studies on its effectiveness are mixed — some people find it helpful, others see no benefit. Try it for yourself with any text below.

💡 Bionic reading guides your eyes through text by bolding the first part of each word — the brain fills in the rest from the bolded letters. Effectiveness varies: some readers find it speeds them up, others see no difference. Try different fixation amounts to find what works for you.