7zip
7zip | for everyone |
Category: | Computers & Electronics |
Product Type: | Other |
Manufacturer: | 7zip |
7 zip a nice archiver file manager and free program
This is a fast written blog. Looked to download a file and it required the 7z file format in order to be downloaded in its 'zipped' format otherwise i could download the excitable with installer.
This made me look a bit in the 7zip web page located on : http://www.7-zip.org/
The above picture is from thier web page
On that page there was also a handy reference between 5 packagers showing 7z as the winner in compression over firefox and Google earth files
But is the format capable as best compressor in between the most common formats?
I made a new directory , adding several different formats of files, compressed each file separately by 7zip , winrar and rar's zip, adjusting them in their the highest compression.
Below is the printing of the directory with the dir line command:
08/03/2008 10:07 ìì 32.927 avi-1.7z
08/03/2008 10:09 ìì 35.383 avi-1.rar
08/03/2008 10:11 ìì 311.613 avi-1.zip
03/03/2008 09:39 ìì 1.832.448 avi-1.avi
08/03/2008 10:09 ìì 35.383 avi-1.rar
08/03/2008 10:11 ìì 311.613 avi-1.zip
03/03/2008 09:39 ìì 1.832.448 avi-1.avi
rar is 7.45% bigger than 7z (very small difference )
08/03/2008 10:09 ìì 805.772 camera.rar
08/03/2008 10:12 ìì 808.261 camera.zip
28/10/2007 02:01 ìì 842.821 camera.JPG
This is a file from my photo camera of 6 MP on the low quality level . The results are very clear about 95% of the original
Here the rar is the smallest with 0.06% being the 7z over the rar
Here the rar is the smallest with 0.06% being the 7z over the rar
08/03/2008 10:09 ìì 186.640 jpgpic .rar
08/03/2008 10:11 ìì 187.248 jpgpic .zip
09/10/2006 08:42 ìì 213.807 jpgpic .jpg
and another pic taken from the internet. the results are again very close for all 3 compressions
08/03/2008 10:08 ìì 77.429 email1.rar
08/03/2008 10:10 ìì 78.005 email1.zip
08/03/2008 09:54 ìì 122.439 email1.eml
This is one email of me having both text and pics .again the 7z wins a little over the rar with just 1.6% difference being 62% of the original
08/03/2008 10:05 ìì 525.732 email2.7z
08/03/2008 10:08 ìì 534.436 email2.rar
08/03/2008 10:10 ìì 540.024 email2.zip
08/03/2008 09:54 ìì 1.057.459 email2.eml
08/03/2008 10:08 ìì 534.436 email2.rar
08/03/2008 10:10 ìì 540.024 email2.zip
08/03/2008 09:54 ìì 1.057.459 email2.eml
ans again another email file with both text and pics. 7z wins over then remain. Here the results are 49,7% of the uncompressed
08/03/2008 10:10 ìì 4.088.936 flvvid.rar
08/03/2008 10:31 ìì 4.107.079 flvvid.7z
08/03/2008 10:12 ìì 4.097.528 flvvid.zip
27/01/2008 01:56 ìì 4.294.265 flvvid.flv
And here the rar and the zip go better than the 7z!!!
08/03/2008 10:07 ìì 11.590 html.7z
08/03/2008 10:09 ìì 12.371 html.rar
08/03/2008 10:11 ìì 13.539 html.zip
12/11/2007 04:15 ìì 161.939 html.html
7z goes here once again better. You see that the compression levels are very big
08/03/2008 10:06 ìì 3.174.967 mp3file.7z
08/03/2008 10:08 ìì 3.179.715 mp3file.rar
08/03/2008 10:11 ìì 3.193.722 mp3file.zip
08/03/2008 05:37 ìì 3.288.289 mp3file.mp3
08/03/2008 10:07 ìì 2.175.145 pdffile.7z
08/03/2008 10:09 ìì 2.168.688 pdffile.rar
08/03/2008 10:11 ìì 2.180.608 pdffile.zip
21/07/2007 06:13 ìì 3.205.163 pdffile.pdf
08/03/2008 10:09 ìì 2.168.688 pdffile.rar
08/03/2008 10:11 ìì 2.180.608 pdffile.zip
21/07/2007 06:13 ìì 3.205.163 pdffile.pdf
this pdf file includes a big text listing of 250 pages , in a compressed form of its own
08/03/2008 10:05 ìì 14.234.989 testzip.7z
08/03/2008 10:10 ìì 14.229.737 testzip.rar
08/03/2008 10:13 ìì 14.553.283 testzip.zip
08/03/2008 10:10 ìì 14.229.737 testzip.rar
08/03/2008 10:13 ìì 14.553.283 testzip.zip
this is the total soze of all the above files together
08/03/2008 10:06 ìì 34.585 text .7z
08/03/2008 10:08 ìì 30.395 text .rar
01/03/2008 09:40 ðì 91.416 text .txt
08/03/2008 10:11 ìì 38.043 text .zip
08/03/2008 10:08 ìì 30.395 text .rar
01/03/2008 09:40 ðì 91.416 text .txt
08/03/2008 10:11 ìì 38.043 text .zip
rar comes here better a bit going 88% from the 7zip
08/03/2008 10:06 ìì 3.111.133 video.7z
08/03/2008 10:09 ìì 3.110.237 video.rar
08/03/2008 10:11 ìì 3.112.453 video.zip
14/02/2008 03:15 ìì 3.140.219 video.3gp
08/03/2008 10:09 ìì 3.110.237 video.rar
08/03/2008 10:11 ìì 3.112.453 video.zip
14/02/2008 03:15 ìì 3.140.219 video.3gp
and once here rar goes farther . Once again the compressions are very small
08/03/2008 11:13 ££ 13.011.065 FWE.7z
08/03/2008 11:14 ££ 15.107.393 FWE.rar
08/03/2008 11:14 ££ 16.968.826 FWE.zip
Original : 33,0 MB (34640447 byte)
And finally looking into the directory of the firefox wonder edition , one of the portable editions of firefox together with irts components caches and cookies a total of 925 files …. 7z goes better than rar but took longer to compress by ca 40%
The answers are yours , as we Greeks say!!!
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