📔 bionic-epub is a Node.js command-line tool to apply Bionic Reading styles to .epub file which can help you to read faster⚡🌠 and focus more easily🌳⏳

npm i

node ./index.js <epubPath>

node ./index.js <epubPath> --black

1. install Calibre
2. use ebook-convert command (make sure the environmental variable path is correctly added)

ebook-convert <inputPath>.epub <outputPath>.pdf

notice: pandoc would not keep the color by default

• Calibre passed ✅
• NeoReader by Boox passed ✅
• some epub viewers not passed yet ❌

• boldColors
• unfocusedOpacity