I tried looking for this but it seems to have disappeared from the internet. You can use the Windows 10 Picture viewer, and change the file name. It helps to rename all photos with the file number first, then you just have to delete the (1), (2) etc...
I also use 'Image Resizer for Windows' to shrink the sizes down. Here's the link for the free program. https://www.bricelam.net/ImageResizer/