Online PDF Merger vs PDFOptim
| Online PDF Merger | PDFOptim | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | Yes |
| Paid from | Free | $0.58/mo |
| Open source | No | No |
| Platforms | Web | iOS, macOS, Windows |
| Free plan | Yes | Yes |
| Primary platform | web | desktop |
| Batch merging | — | Yes |
| Cloud storage support | — | No |
Both are listed in Best PDF Merger Software. On Samsung Mobile US Press, PDFOptim scores higher on our published basis.