Display Settings
Mekuru splits reader customization into two places: global defaults in Settings > Reader Settings, and per-book quick settings inside the reader.
Global Reader Settings
Open Settings (gear icon on the You tab), then Reader Settings. The screen is grouped into All books, EPUB, and Manga sections:
| Setting | What it controls |
|---|---|
| Font Size | Default reader text size |
| Color Mode | Normal, Sepia, or Dark, with a sepia intensity control inside the picker |
| Keep Screen On | Prevent the screen from sleeping while reading |
| Horizontal Margin | Side padding around EPUB text |
| Vertical Margin | Top and bottom padding around EPUB text |
| Swipe Sensitivity | How far you need to drag before a page swipe triggers |
| Split Vertical Text | Show two stacked text blocks per page in vertical books |
| Disable Links | Treat linked text as lookup targets instead of navigation |
| White Threshold | Manga auto-crop tuning — lower values ignore more near-white artifacts |
| Custom OCR Server | Remote OCR endpoint for CBZ manga; see Custom OCR Server |
Per-Book Quick Settings
Inside an EPUB reader session, open the quick settings sheet for the current book to change:
| Setting | Notes |
|---|---|
| Furigana | Off, Book, All kanji, or JLPT — with a level picker for the JLPT mode; see Furigana |
| Vertical Text | Only available when the book supports it |
| Reading Direction | Switch between right-to-left and left-to-right for that book |
| Disable Links | Treat linked text as lookup targets instead of navigation |
These changes affect the current book view rather than the global app defaults.
Manga Reader Settings
Image-based manga does not use the EPUB text layout controls above. Instead, the manga reader exposes its own settings such as view mode, reading direction, auto-crop, and transparent lookup. See Reading Manga.