Bionic Reading Converter

Paste text on the left, see the bionic version on the right. The first letters of every word are bolded so your eye can fixate on the salient part and let the brain fill in the rest. Pick a strength, copy as plain text or HTML, no upload, works offline once loaded.

How it works. Each word of length 4+ has its leading letters bolded. The number bolded is roughly length × strength, with a cap that always leaves the last two letters visible. Words of length 1–3 are left as is — they're already the fixation point. Strengths: light 30%, medium 40% (the conventional default), and bold 55% for fast skimming.

Strength

Tip: copy any prose — an article, an email, study notes — and watch the right-hand pane update as you type.

Bionic preview

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