Bionic Reading Converter — bold the leading letters, export HTML

Real-world use cases

• Make a long study chapter scannable before an exam

  You have eight pages of dense textbook prose to review and your eyes keep sliding off the page. Paste a chapter, set strength to medium (45%), and the bolded word-starts give your gaze a rhythm to follow line by line. Turn on "skip stopwords" so the page isn't a wall of bold — only the content words light up. Download the HTML and read it full-screen, or print it for an offline study session. It won't memorize the chapter for you, but several students find it cuts the re-reading they do when a paragraph "didn't go in" the first time.

• Format a newsletter so skimmers catch the key words

  Most newsletter readers skim. Run your draft through at light strength (30%) so the leading letters nudge the eye toward the start of each word without screaming. Copy it as formatted text into your email tool (Gmail, Notion, Beehiiv editors that accept pasted rich text) and the bold survives. The effect is subtle enough to look intentional rather than gimmicky, and it gives skimmers a foothold on every word instead of only your manual bold phrases.

• Help an ADHD reader get through a wall of documentation

  Long API docs or onboarding wikis are exactly the kind of flat, uniform text that's hard to stay locked into. Paste a section, pick strong (60%) for maximum guidance, and read it in the live preview. The reported benefit here isn't speed — it's that the artificial fixation points reduce the "where was I?" line-loss that makes dense docs exhausting. It helps some people a lot and others not at all, which is exactly why we keep it a free, no-signup toggle you can try on your own material in ten seconds.

• Build a printable bionic worksheet for a reading group

  A literacy tutor or book club wants a handout where the first letters guide newer readers. Paste the passage, choose medium strength, skip stopwords so function words stay light, then download the standalone HTML. Open it in any browser and print — the document ships with print-friendly margins and a readable body font, so the handout looks deliberate, not like a screenshot. No design tool, no account, no per-page fee.

• A/B test whether bionic formatting helps your own focus

  The research is genuinely mixed, so the only answer that matters is whether it helps you. Take one article you need to read, format it here, and read half bionic and half plain. Pay attention to whether you re-read less or feel less fatigued — not to a stopwatch, because raw speed rarely changes. The URL carries your text, so you can reopen the exact same comparison tomorrow and check whether the effect holds or was just novelty.

Common pitfalls

• Cranking strength to 60% on a whole article. When more than half of each word is bold, the page reads as uniformly heavy and the fixation effect disappears — the bold has to contrast with a light tail. Use light or medium for body text and save strong for short, hard passages.

• Expecting it to work on Chinese or Japanese prose. Bionic reading needs word starts, and CJK writing has no spaces between words. The CJK toggle only helps space-segmented text; for normal Chinese paragraphs leave it off and treat the tool as English-first.

• Pasting the rich-text copy somewhere that strips formatting (plain-text email, a code editor, Slack's plain message box) and wondering where the bold went. If the destination doesn't accept HTML, use Download HTML and open the file instead, or paste into a rich editor like Docs or Notion.

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