PDFtk vs Secure-Merge
| PDFtk | Secure-Merge | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | Windows, macOS, Linux | Web |
| Free plan | Yes | Yes |
| Page selection | Yes | Yes |
| Primary platform | desktop | web |
Both are listed in Best PDF Merger Software. On Inferse, PDFtk scores higher on our published basis.