Bionic Reading Converter

Paste your text and this bionic reading converter bolds the front of every word, giving your eye a fixed point to land on so your brain can fill in the rest. It's free, it's instant, and the whole thing runs in your browser.

A lot of the free versions fall down at exactly this step. Some just show you the bolded text on screen and stop there, and others dump a pile of raw <strong> tags onto your clipboard, so the second you try to paste the result into a real document it either falls apart or shows up as visible code. Formatting you can't actually keep somewhere else isn't worth much. The point of converting an article or your study notes is to take them with you. Hit Copy formatted text and you get proper rich text on the clipboard, the kind that lands in Google Docs, Word, Notion, or an email with the bold still intact. And nothing you paste in ever leaves your machine, there's no upload and no server in the middle.

1. Paste your text into the box. An article, an email, a textbook chapter, a wall of study notes, whatever you're trying to get through.
2. Read the preview. The bolded version appears underneath as you type, with no convert button to go looking for.
3. Set the fixation strength. Slide it up to bold more of each word, down to bold less. Most people settle around 40 to 50 percent.
4. Skip the short words if you like. Raise the minimum word length to 3 or 4 and glue words such as "a", "an", "of", and "the" stay in normal weight, which stops a paragraph from becoming one solid block of bold.
5. Copy it out. Copy formatted text drops the bolded version into a doc or email with the formatting alive. Copy HTML hands you the raw markup for a web page or CMS.

How much of each word you bold is the one control that matters, and it's the one a lot of converters don't hand you. The effect barely registers when you bold too little. Pile on too much, though, and the page turns into a smear of bold where nothing stands out, which kills the whole point, the contrast between the bold front and the plain tail is what makes your eye lock onto the word. Flatten that contrast and there's no anchor left.

So the slider runs from a light touch up to a heavy one. Around 30 percent bolds just the very start of each word, subtle, a good place to begin if strong bold bothers you. Push it to 50 and each word splits roughly down the middle, a firm pattern that's still comfortable to read. Go past 60 and most of the word is bold, which a few people with genuine reading difficulty prefer, though for most readers it reads as too much.

The math behind it is nothing fancy. Take a word's length, multiply by your percentage, round up, and that's how many front letters get bolded, with a floor of one so even a two-letter word keeps a single bold character. "Reading" at 50 percent bolds its first four letters (reading). Drop to 40 and it's the first three (reading). Nudge the slider and short words shift one letter at a time, which is exactly the fine control you want while you're dialing it in.

The minimum-word-length setting works alongside that. Set it to 3 or 4 and the converter leaves the little function words plain, so only the content words carry the bold. For ordinary prose that usually reads cleaner than bolding every last word, and it's another option most free tools don't bother offering.

Most bionic reading pages promise you a speed boost and quickly change the subject. The research is messier than that, and it changes how you ought to use this.

The independent studies that have actually tested bionic reading have mostly come up empty on speed. Several found no real difference against plain text, and a couple found readers slightly slower, probably because a full page of heavy bold is visually busy and wears the eye down. The company behind the trademark points to positive user feedback, but the large, independent, peer-reviewed trials that would confirm a genuine speed gain simply aren't there yet. Calling it a proven speed-reading method, right now, would be overstating it.

No proven average gain doesn't mean it does nothing for you. Averages hide individuals, and plenty of people, especially anyone with ADHD or reading off a screen late at night, say the bolded anchors keep their eyes from sliding off the line. That's about focus rather than raw speed, and it's real even if it's hard to pin down in a lab. Finding out whether it does anything for you takes maybe two paragraphs. Read a bit of your own text bolded, read a bit plain, and trust what your eyes report over any marketing claim, mine included.

And no one should sell you bionic reading as a cure for ADHD or dyslexia. It helps some people with each and does nothing for others, and dyslexia especially isn't a single condition, so there's no guarantee in either direction. If that's why you're testing it, keep the fixation low and give it an honest run across a few paragraphs before you decide.

Because the effect is ordinary bold text, moving it somewhere else depends on whether the destination understands bold. Copy formatted text is what you want nearly every time. It puts a rich-text version on your clipboard that holds its bold in Google Docs, Word, Notion, an email, and most real editors. Copy HTML gives you the raw <strong> source instead, for when you're dropping the text into a web page or a CMS and would rather handle the markup yourself.