How it works
The Bionic Reading converter applies the Bionic Reading technique to text — bolding the first few letters of each word to create visual anchors that guide the eye through text faster. The result looks like **re**ading **wi**th **bo**ld **an**chors at the start of each word.
Bionic Reading is a reading method developed by Swiss typographer Renato Capo, based on the principle that the brain completes words from partial visual input. By bolding the most recognizable part of each word (the beginning), readers can process text faster with less conscious effort. Studies suggest speed improvements of 10-30% for trained readers.
How to use it: paste your text. The tool applies bold formatting to the first 40-60% of each word (the percentage is configurable). The output is generated as HTML (with <strong> tags) or as Markdown (**bold** syntax) — choose the format you need.
Accessibility note: Bionic Reading is particularly helpful for readers with dyslexia or ADHD who find continuous text difficult to track. The visual anchors reduce eye skipping and re-reading.
Content output: use the HTML output when embedding Bionic Reading content in a web page. Use the Markdown output for Notion, Obsidian, GitHub, and other Markdown-native platforms. Some platforms (Discord, Telegram) support **bold** markdown inline.
Frequently Asked Questions
- The fixation point — the portion that is bolded — covers approximately 40–60% of each word, focusing on the beginning where the brain first anchors recognition. Shorter words (1–3 letters) are bolded in their entirety.
- HTML with <strong> tags (for web pages), Markdown with **bold** syntax (for Notion, Obsidian, GitHub), and plain text with uppercase anchors (for contexts where formatting is not supported).
- The original technique was developed by typographer Renato Capo and is patented. Independent academic research on its effectiveness is limited and mixed. Many users report subjective speed improvements, particularly those with attention difficulties.
- The algorithm applies the same fixation pattern to any Latin-alphabet text. It was designed for English; effectiveness for other languages has not been formally studied.