OmniViewer vs PRO Viewer
| OmniViewer | PRO Viewer | |
|---|---|---|
| Platforms | Linux, macOS, Web, Windows | Linux, Web, Windows |
| Free plan | Yes | |
| Primary access | web | |
| Archive preview | Yes | |
| Office file preview | Yes | |
| Code file preview | Yes | |
| PDF tagging tools | Yes | |
| Reading order tools | Yes | |
| Alternative-text tools | Yes | |
| PDF/UA support | Yes | |
| Batch processing | Yes | |
| API access | Yes |
Listed together in Best File Viewer Software