Okular VS calibre Feature comparision
| Feature | Okular | calibre |
|---|---|---|
| Tabbed interface | ||
| Chapter cursor | ||
| Document reader | ||
| Lightweight | ||
| Low memory usage | ||
| PDF annotation | ||
| Fill PDF Forms | ||
| Export to PDF | ||
| Text Highlighting | ||
| Text to Speech | ||
| Trim margins | ||
| Highlighter | ||
| Optimal performance | ||
| Batch conversion | ||
| Built-in e-Book converter | ||
| Built-in viewer | ||
| Customizable | ||
| Edit PDF | ||
| Handwriting recognition | ||
| Multiple languages | ||
| Scan documents | ||
| File transfer | ||
| Freehand Writing | ||
| Document annotations | ||
| Sync between devices | ||
| iPhone/iPod sync | ||
| Night mode/Dark Theme | ||
| PDF OCR | ||
| Clean design | ||
| Customer support | ||
| Cross-platform | ||
| Portable | ||
| Vim key mapping | ||
| Add/remove pages | ||
| Browser integration | ||
| Browser extension | ||
| Auto update | ||
| Bibliography generator | ||
| Book organization | ||
| Built-in editor | ||
| Built-in Adobe Flash Player | ||
| Built-in PDF converter | ||
| Custom cover image | ||
| DRM Free | ||
| Email notifications | ||
| Facebook integration | ||
| File-sync | ||
| Handwritten Notes | ||
| Indexed search | ||
| Integrated PDF Viewer | ||
| Library management | ||
| Book manager | ||
| Live Push Notifications | ||
| Live updating | ||
| Read fb2 format | ||
| Rss to Kindle | ||
| SMS Reminders | ||
| Supports All Ebooks Format | ||
| Sync with e-reader | ||
| Update notifier |
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