How to save data from virus attack

from these developments the digital world of crime, such as the destruction of our important data from virus attacks. maybe there are some steps for our data can be maintained or minimize the virus infected: As for the following steps:

1. save our data into winrar, zip, gz, tar or other forms of compressed files.
2. change the form of a picture into html or txt format. This format may prevent computers from virus attacks that could damage our data