Dee, all computers come loaded with software that you can resize pics with.  With windows, have a look for a program called paint.  I'm sure that Macs have something equivalent.
With tablets and phones, have a look for free apps that resize pics.  There's quite a few around.
Alternatively, hack Hirdy's website and host your pics there.  Pretty sure he would have kiddie filters turned off so you could just about put anything up there.   
