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Pictures - PSD (Highly Compressible)
Compression Rate
| Data Compressors |
Original Size (bytes) |
Compressed Size (bytes) |
Space Saved (bytes) |
WinRK |
200,010,869
|
85,679,157 |
114,331,712 |
SBC Archiver |
200,010,869
|
91,486,764 |
108,524,105 |
Squeez |
200,010,869
|
92,206,386 |
107,804,483 |
7-Zip |
200,010,869
|
96,574,777 |
103,436,092 |
WinZip |
200,010,869
|
97,523,422 |
102,487,447 |
WinAce |
200,010,869
|
109,031,529 |
90,979,340 |
WinRAR |
200,010,869
|
110,211,331 |
89,799,538 |
StuffIt |
200,010,869
|
114,310,155 |
85,700,714 |
bzip2 |
200,010,869
|
117,474,879 |
82,535,990 |
ARJ32 |
200,010,869
|
136,524,108 |
63,486,761 |
gzip |
200,010,869
|
137,003,565 |
63,007,304 |
The best compressor of this fileset was WinRK. It reduced the fileset size to just 85.7MB. That's a space saving of over 114MB. Very impressive. Even the closest contender, SBC Archiver , could only reduce the size of the archive by 108.5MB.
The worst compressors, by far, wereARJ32 and gzip. They only managed to reduce the archive size by about 63MB or 31.5%.
Compression Speed
| Data Compressors |
Original Size (bytes) |
Time (s) |
Speed (KB/s) |
gzip |
200,010,869
|
21.38 |
9355.0 |
ARJ32 |
200,010,869
|
27.24 |
7342.5 |
bzip2 |
200,010,869
|
45.68 |
4378.5 |
WinRAR |
200,010,869
|
89.10 |
2244.8 |
StuffIt |
200,010,869
|
95.59 |
2092.4 |
WinZip |
200,010,869
|
103.77 |
1927.4 |
SBC Archiver |
200,010,869
|
122.56 |
1631.9 |
WinAce |
200,010,869
|
136.90 |
1461.0 |
7-Zip |
200,010,869
|
169.70 |
1178.6 |
Squeez |
200,010,869
|
216.11 |
925.5 |
WinRK |
200,010,869
|
624.86 |
320.1 |
When it came to compression speed though, the trio of gzip, ARJ32 and bzip2 were the fastest compressors. gzip was the fastest at almost 9.4MB/s while ARJ32 and bzip2 delivered compression speeds of 7.3MB/s and 4.4MB/s respectively.
WinRK was, again, the slowest compressor tested. It took over 10 minutes to complete the test. You will need a lot of patience with this compressor.
Compression Efficiency
The compression efficiency rating is a simple way to evaluate the efficiency of each data compressor. This way, we can see which compressor can save the most space in the least time.
Please note that a higher efficiency rating does not mean the compressor is better. It just means the compressor has a better compression-to-speed ratio. A more efficient compressor is, of course, always more desirable than a less efficient one.
Thanks to its super-fast compression speed, gzip was the most efficient data compressor even though it only has an average compression rate. It was over 26% more efficient than the next most efficient compressor, ARJ32. Although a distant third, bzip2 was also a very efficient compressor of this fileset.
The most inefficient compressor was undoubtedly WinRK. The really long time it took to compress the fileset completely offset the amount of space saved.
