IIS Compression
There is a shortcoming in this version which needs to be mentioned. If you are using this tool to decompress data being returned from an IIS server it will not work if the compression method is 'deflate'. It will only decompress 'gzip' format from IIS. So make sure that the header you send to the IIS server is;

"Accept-Encoding: gzip"

and not

"Accept-Encoding: gzip, deflate"