Bionic Reading Converter
Transform any text into Bionic Reading format to read faster and improve comprehension.
Bionic Reading Mode
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What is the Bionic Reading Converter?
Bionic reading bolds the first few letters of each word and leaves the rest light, giving your eye fixed points to jump between as it moves along a line. The technique was popularised by Renato Casutt. This converter applies it to any text you paste, or to a PDF or EPUB you import (up to 5MB), processing the file in your browser.
A fixation setting controls how much of each word is bolded, from 40% to 60%, and a contrast setting changes how strong the bold looks. You can read in full screen and export the result for later.
How to use the bionic reading converter
- 1. Paste text into the box, or import a PDF or EPUB (max 5MB).
- 2. Set the Fixation percentage and Contrast to taste.
- 3. The bionic version appears beside your text as you type.
- 4. Use Full Screen to read, or Export to save the result.
Features
- Adjustable fixation from 40% to 60% of each word.
- Three contrast levels for the bold weight.
- Import text from PDF or EPUB up to 5MB.
- Full-screen reading and export.
- Runs in your browser - your text and files are not uploaded.
Common uses
Working through a long article, paper or eBook with fewer re-reads, giving your eyes fixed anchor points during a dense document, or simply trying a different way to read on screen. Whether it speeds you up varies from person to person; the honest pitch is that many readers find it easier to stay focused.
FAQ
What is bionic reading?
It is a reading aid that bolds the opening letters of each word so your eye has fixed points to land on. The idea, popularised by Renato Casutt, is that the brain fills in the rest of the word.
Does bionic reading actually make you read faster?
Results vary and controlled studies are mixed - it does not reliably increase raw speed for everyone. Many readers do find it helps them focus, which is the main reason to try it.
What does the fixation setting do?
It sets how much of each word is bolded, from 40% to 60%. A higher fixation bolds more letters per word, which some readers find stronger and others find distracting.
Are my text and files uploaded?
No. The text and any PDF or EPUB you import are processed in your browser, so nothing is sent to our server.