inspection photo converter

hi folks. i am wondering if anyone knows of a photo resizing program i could use with my mac. i use for my reports & they require that uploaded photos come in under 50K. i just got a macbook and my old resizing program only works with windows. if anyone out there could point me towards a simple, mac-compatible image resizing program (preferably for free) i would be eternally grateful…

You can also use infranview and photofilter.

There are many others if you look up under photo editor.