VertiScroll Pro by Kubet88vn Top

Transform text for vertical reading (right-to-left and left-to-right options)
Easy toggle on/off through browser action button
Customizable font size, line height, text color, and background color
Option to add custom CSS for advanced users
Persistent settings across browser sessions
Options page for easy customization
Smooth transition between normal and vertical reading modes
Support for all websites
Highlighting feature (implemented in the CSS file)
Comment feature (basic structure implemented in the CSS file)