Bionic Reading Converter

Features

• Bolds the first part of every word as a reading guide
• Adjustable fixation, from a light cue to a strong one
• Live preview as you type or drag the slider
• Copies real bold Unicode so it pastes into other apps
• Runs entirely in your browser, nothing is uploaded

How to use it

1. Paste the text you want to read into the box.
2. Drag the fixation slider to set how much of each word is bolded.
3. Read the preview, or copy the bold version to paste elsewhere.
4. Use a lighter fixation for easy text and a stronger one for dense text.

What bionic reading is, and what the evidence says

Bionic reading is a formatting idea that bolds the first few letters of each word and leaves the rest light. The claim is that these bold openings act as fixation points your eyes jump between, so your brain recognises each word from its first letters and fills in the remainder without reading every character. Many people find it makes long or dense text feel quicker and easier to move through.

This tool builds the effect by bolding a share of each word that you control with the fixation slider, using real bold Unicode characters so the result can be copied into other apps rather than living only on this page. A lighter fixation bolds just the first letter or two for a subtle guide, while a stronger one bolds up to the first two thirds of each word for a more forceful lead.

It is worth being honest about the evidence: controlled studies so far have not found a reliable increase in reading speed or comprehension across readers, and results vary a lot from person to person. Plenty of people still prefer it and read more comfortably with it, so treat it as a personal aid worth trying rather than a proven speed boost, and pick the fixation that feels best to you.