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Best program to compress with

by korndog.korn / February 1, 2009 2:27 PM PST

I was wondering if anyone could help me find a compression program like winrar, that will compress a file the most.

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Most efficient compression program
by Terabytten321 / February 1, 2009 8:47 PM PST
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It would be interesting ...
by Kees Bakker / February 1, 2009 8:51 PM PST

if you told the forum about your experiments with compressing a file (or a set of files) with different programs. The statement that 7Zip is the 'best' (reaches the highest compression) is rather unproven. So it would be very nice if you, after trying, could post some figures and facts.

Kees

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---
by Terabytten321 / February 1, 2009 8:59 PM PST

Do you dispute 7zip being the most efficient, or have a more effective suggestion than the suggestion that I had made? My understanding would be that compression rate varies on the type of compression, and the fine-tuned settings setup within the program. 7Zip being the most versatile, and lightest weight - of those I've run across - I felt it deserved mentioned as the most efficient, and care not to research trivial details that you so desire. I did post the program's home page, if anybody were to be more interested in specifics, they'd be welcome to do so.

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Re: compression
by Kees Bakker / February 1, 2009 9:03 PM PST
In reply to: ---

With zip being a standardized method, I assume that all zip-programs give the same result for a given file (using default settings) until it's proven otherwise. I never did the research myself. But the OP seems to be interested in the most effective compression to be found. And I think comparison and experiment is the best way to find that.

Kees

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did some research
by korndog.korn / February 3, 2009 9:35 AM PST

thank you for your oppinions but i decided to go do some more research so i did a little test with the archivers people said were the best.

All tests were done on the same pc and at the maximum compression ratio for the program
A game disc image was used for testing the image was 798mb
All were compressed into sfx archives because i believe they are the most practical way to compress files for distribution.


win UHA
PPM-mode
{maximum} 95.9%
archive size 765mb

7-Zip
{ultra} 95%
archive size 762mb
note that this was the fastest archiver.

Kgb archiver
{maximum} 94.8%
archive size 757mb

conclusion i would go with 7-zip because it was by far faster than the others and it did have a good compression ration

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