I think FTP is a normal place for file transer, as the name already says: File Transfer Protocol. You don't need an extra FTP client. Just paste the link into Windows File Explorer and it will work.
However, this time I was able to upload a file to this forum. It is the zip file I was talking about. It contains the original TIFF image (and the source code of the test program I wrote), so you can easily try it out yourself.
Well, I cannot use PNG, because I need to open TIFFs coming from an external source.
But, as Paint.NET is free, I won't complain.
TIFFTest.zip