Preview vs SumatraPDF
| Preview | SumatraPDF | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | Free |
| Open source | No | No |
| Platforms | — | Windows |
| Free plan | Yes | Yes |
| Annotation tools | Yes | Yes |
| Form filling | Yes | No |
| Offline access | Yes | Yes |
| Platform support | desktop | desktop |
| OCR support | — | none |
| Text-to-speech | — | Yes |
Both are listed in Best PDF Readers. On Specifiction, SumatraPDF scores higher on our published basis.