Bionic Reading
Bionic Reading is a reading aid that bolds the first portion of each word, guiding your eyes to natural fixation points and helping you read faster with less effort. Some readers - particularly those with ADHD - find it helps them stay engaged with the text and reduces mind-wandering.
Left: Bionic Reading off. Right: Bionic Reading on. Both using Literata.
Enabling Bionic Reading
- Open Settings > Reader
- Toggle Bionic Reading on
Toggling the setting will trigger a re-index of your current book, the same as when changing font settings. Once indexing is complete, page turns proceed as normal. No changes are made to your EPUB files.
Examples
Bionic Reading with Noto Serif font
Bionic Reading with Merriweather font
Bionic Reading with Atkinson Hyperlegible Next font
Notes
- Bionic Reading only applies to regular body text. Already-bold text (headings, emphasis) is left unchanged.
- The setting is per-device, not per-book — it applies to all books while enabled.