| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | — |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| Plans published | 1 | 2 |
| Spec score · PDF editors | 8.4 (#27) | 9.0 (#11) |
| Annotations | It supports highlighting, ink drawing, shapes, notes, and stamps. | Markup tools support highlights, underlining, strike-through, notes, comments, stamps, shapes and text boxes. |
| Annotation tools | Yes | Yes |
| Form creation | Yes | Yes |
| Free plan | Yes | Yes |
| OCR | OCR turns scanned pages into searchable, selectable PDFs and runs locally on the device. | Its OCR recognizes scanned documents and supports more than 30 languages. |
| Support | Support is available by email, with usual replies within a couple of business days; bugs and feature requests can be submitted on GitHub. | Independent directory listings identify email/help-desk support, FAQs, documentation and videos. |
| Supported platforms | web,windows,macos,linux,ios,android | web,Windows,macOS,iOS,Android |
| Text editing | Yes | Yes |
