Posted 02 December 2016 - 09:27 PM
7-zip would be my recommendation.
I can only imagine the problems with download were caused by using a different site, perhaps being mislead by and advert. It s not common for sites to only let downloads be made with certain browsers, honestly the only example of it I've ever seen is some of the ms update checking webpages MANY years back seen from a windows XP computer.
pptx versus ppt, pptx is a newer formatting type which does not contain macros. ppt may contain macros. Effectively, in response to the existence of macro based viruses, recent versions of ms office switched from the old ppt, doc, pub, xls any of which might or might not have macros to having pptx, docx, xlsx and pubx to tell you that macros are not present, and docm, pubm, xlsm and pptm in the few cases where macros are present. There are quite a lot of file types actually which won't compress further when you zip them.
Back on this site, for a while anyway, been so busy the last year.
My systems:2 laptops, intel i3 processors, windows 8.1 installed on the hard-drive and linux mint 17.3 MATE installed to USB