Thank you for your reply, the thing is, iso of games are above 8 gb these days and popular games are more of 50 to 60 gb iso as well. Now compression in case of a 60 gb iso would take a lot of time to be frank while splitting the files through some rar program like winrar, also takes time. Despite of iso, not all games are in the form of iso, there are .bin files which are mostly above 10 gb e.g. GTA V bin file is almost 50 gb ! The better way would be to remove the restrictions of a tar archive. I have mentioned some of the default restrictions of tar which is being used in hfs as folder archive below ...
1: The maximum length of a file name is limited to 256 characters, provided that the file name can be split at a directory separator in two parts, first of them being at most 155 bytes long. So, in most cases the maximum file name length will be shorter than 256 characters.
2: The maximum length of a symbolic link name is limited to 100 characters.
3: Maximum size of a file the archive is able to accommodate is 8GB
4: Maximum value of UID/GID is 2097151.
5: Maximum number of bits in device major and minor numbers is 21.
Referring to point 3, explains that such restriction is default so there is nothing to edit in the html template of hfs. Any other solution would be much appreciated !