Download 7-Zip for Windows compress files.

compress winrar file just 10mb when unzip it it was a winxp os around 650 mb
first download and install 7-zip. after that right click on desire folder. and select 7zip there select Add to desire name.


It depends on the content of the file to be compressed. Not every file can be compress by that factor. For example, media content tends to already be in a compressed state, so attempting to compress it even smaller can sometimes have a negative effect and make the file larger.

In Winrar, just set the option to use, "highest", compression ratio, this will take the longest to compress, as well as the possibility of corrupting data. Its why Winrar has a low, "archive", setting to reduce the possibility the contents will be corrupted. You may also split the rar file into several smaller pieces instead of having to deal with one big compressed file.



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