Turn any block of text into bionic reading format. Paste your text below and the tool bolds the leading portion of every word to give your eye a fixation point, so you can glide through a line instead of reading letter by letter. Adjust how much of each word is emphasized, change the preview size, and copy the result as ready-to-paste HTML. Everything runs privately in your browser.
Bionic reading is a way of formatting text that bolds the first few letters of each word and leaves the rest in a regular weight. Those bold leading letters act as fixation points - small visual anchors that draw your eye to the start of every word. The theory is that once your eye lands on the highlighted part, your brain recognizes the whole word from just the opening letters, so you spend less time scanning the middle and end of each word. The result is a page where every word has a built-in starting handle for your gaze.
This converter applies that formatting automatically. You paste in plain text, choose how strong you want the effect, and it wraps the leading portion of each word in bold tags while leaving spaces, punctuation, numbers, and line breaks completely untouched. The actual words never change - only which part of each word is bold.
Paste or type your text into the Your text box at the top. The bionic reading preview below updates instantly with every keystroke, so there is nothing to submit. Use the Fixation strength slider to control how much of each word is bolded: a lower setting around 40% is subtle, while 60% gives a heavier anchor. The Preview font size slider lets you make the sample bigger or smaller to find a comfortable reading size. When you like the result, press Copy as HTML to copy the formatted text, bold tags included, ready to paste into an email, a document, or a web page. Clear resets everything.
People reach for bionic reading for a few different reasons. Readers with ADHD sometimes report that the fixation points help anchor their attention and reduce the urge to skip around the page. Some readers describe the format as dyslexia-friendly because the strong word boundaries make it easier to keep their place, though experiences here vary widely and it is not a substitute for tools designed specifically for dyslexia. People interested in speed reading use it to push through long articles with fewer stops, and students often apply it to dense notes and study material to maintain momentum while reviewing.
An honest note on the research: despite the popular marketing, independent studies have generally found little to no measurable improvement in average reading speed or comprehension from bionic-style formatting, and a few readers are slightly slowed by it. The benefit, when it exists, seems to be mostly about focus and reduced re-reading rather than raw speed. The sensible approach is to try it on your own material, judge it by how it actually feels for you, and keep it only if it genuinely helps.
Everything runs locally. Your text never leaves your device. All processing happens in your browser with JavaScript, so you can format private notes, drafts, or confidential documents without anything being uploaded, logged, or tracked.