File Viewer vs Universal File Opener
| File Viewer | Universal File Opener | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | Yes |
| Paid from | — | $0.83/mo |
| Open source | No | No |
| Platforms | self-hosted, Web | Android, Windows |
| Primary access | web | mobile |
| Archive preview | Yes | Yes |
| Office file preview | Yes | Yes |
| Code file preview | Yes | Yes |
| In-file search | Yes | Yes |
| Free plan | — | Yes |
| Listed formats | — | 214 formats |
Both are listed in Best File Viewer Software. On Samsung Mobile US Press, Universal File Opener scores higher on our published basis.