WinRAR is the best tool available to protect your file from any loss or any damage WinRAR support zip file as well as Rar file. you can compress your file in the zip format so that their size will be reduced and also you can set the password to send this file securly to the receiver. this tool is also available in free version so that anyone can easily use this tool.
One of the best thing that I found for this one is no 1 virus can harm the zip as well as a rar file which is created in Winrar. so enjoy sharing your files securely as well seduced the large size file into small size by compressing it on to Zip file.