Make sure the files you are trying to compress are not already in a compressed format like JPEG or MP4. Ensure that you are not trying to. did you download a file that is high compressed? and you are by using this tool you can compress 1GB into 1Mb. but this tool is very slow. A 1GB file containing nothing but zeroes would be highly compressible by any algorithm out there, but it wouldn’t be very interesting or useful. How much can a 1GB file be compressed? I have tested KGB archiver to compress different kind of files, folder, software, documents. Is it possible to compress 1GB files into around MB or MB? It is very much clear that it's almost impossible to convert 1GB file into 1MB to MB with . Compressing 1GB To 1MB. Well everyone will be interested to know how to do this. It is really possible but not for every file. From my experience sound and. In this article, I will show you how to Compress large files in very small size and as mentioned in the heading, I will show you how I compressed a file of 1GB in just 1MB. One thing you should remember is that there is no software that can compress highly compressed files which.