maximum compression

A

ayeshid

New Member
Hi All,

I compressed a folder of 232 MB using win zip and after compression zip file size was 229 MB.

I wanna know which software compresses files to maximum level and the compressed files are least in size as compare to other compressions?

Thanks,

Ayesha
 
It really depends on what file types you are trying to compress. For example, jpg, mp3, exe files are already highly compressed and you will not see too much more compression by adding them to an archive. With text files (doc, xls, etc) on the other hand, you will see a higher level of compression.

The best compression I have seen came from a program called UHARC. I've seen 700MB of data brought down to around 6MB...amazing compression rates (obviously mostly text-based files)! The trade off, however, was that it is a little slow. But if I was creating an archive that I wouldn't be opening for awhile it was worth it; if it was something I would be accessing all the time, not so much. I haven't used it in a few years.

I just tried to search for it, and I found a bunch of front end GUI applications for it (I used to use it from the command line), but I imagine that if the GUI sucked, you could just use the actual utility from the command line.
 
7-zip. Very efficient, fairly slow.

I compress those with UltimateZip, but heaps of other programs handle those as well, including 7-zip archiver found in SourceForge. Plus, the format is 100% free
 
yeah i use 7-zip for my normal archiving.

but kgb has a higher compression rate. so as far as compressing stuff. better to use.
 
As a poster already said, it depends on the format. If they are files such as MP3's, MPG Videos, and other already compressed files, then you won't be able to compress them much. Text files can be compressed greatly, as well as several others.
 
I just use plain ol winrar, for the price of hard drive space and the speed at which we can transfer things over the net I dont see much use in compression. Was pretty cool though one day I need to compress a .avi video for a friend. It was originally 2.5 gigs then after compression it was like 600 megs!
 
I tested out UHARC and it only compressed a 174MB video file to 172MB, whereas WinRAR compressed it to 173MB. Granted the video is a .mpg so it's already compressed.
 
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