I'm in the process of re-building my portfolio site and need to go through a lot of sites and generate both thumbnail and fullscreen image files. Does anyone know of any tools, ideally for chrome, to make generating these quicker and easier?

Answering my own question (sorry about that!) I found this chrome addon https://chrome.google.com/webstore/detail/ckibcdccnfeookdmbahgiakhnjcddpki which does the job nicely, still interested to hear any other tools people use.