Performance
ZIP Format
Compression ratio results are very dependent upon the data used for the tests. We compared 7-Zip with some of the leading commercial archivers: PKZIP 2.04g, WinZip 7.0.
FILE SET: The Canterbury Corpus (11 files totaling 2,810,784 bytes, popular file set used to compression rates).
| Archiver | Compressed size | Ratio |
|---|---|---|
| 7-Zip (zip format) | 676284 | 100% |
| PKZIP 2.04g -ex | 726047 | 107% |
| WinZip 7.0 (Max) | 731499 | 108% |
7z Format
7z is the new archive format, providing a high compression ratio.
FILE SET: The GIMP 1.2.4 for Windows after full installation (127 subfolders, 1304 files totaling 27,128,826 bytes). The GIMP is the GNU Image Manipulation Program. It can be downloaded from www.gimp.org.
| Archiver | Compressed size | Ratio |
|---|---|---|
| 7-Zip (7z format) | 5445402 | 100% |
| WinRAR 3.10 | 6004155 | 110% |
| WinAce 2.3 | 6242424 | 115% |
| CABARC 1.0 | 6455327 | 119% |
| 7-Zip (zip format) | 9461621 | 174% |
| PKZIP 2.50 | 9842800 | 181% |
GZIP Format
7-Zip provides the best compression ratio for GZIP format. The compression ratio is equal to its compression ratio for ZIP format (above).
Other documents on this site:
- 7-Zip Manual /lzma.txt
- 7-Zip Manual /src-history.txt
- 7-Zip Manual /readme.txt
- 7-Zip Manual /7zC.txt
- 7-Zip Manual /License.txt
- 7-Zip Manual /copying.txt
- 7-Zip Manual /Methods.txt
- 7-Zip Manual /unRarLicense.txt
- 7-Zip Manual /7zFormat.txt
- 7-Zip Start Page
- Command Line Syntax
- Command Line Version User's Guide
- Exit Codes from 7-Zip
- -ax (Exclude archive filenames) switch
- -y (assume Yes on all queries) switch
- -sa (set Archive name mode) switch
- -slp (Set Large Pages mode) switch
- -p (set Password) switch
- -stl (Set archive timestamp from the most recently modified file) switch
- -sfx (Create SFX archive) switch
- -ssc (Set Sensitive Case mode) switch
- -scrc (Set hash function) switch
- -ai (Include archive filenames) switch
- -o (set Output directory) switch
- -si (read data from stdin) switch
- -r (Recurse subdirectories) switch
- -ssw (Compress files open for writing) switch
- -w (set Working directory) switch
- -so (write data to stdout) switch
- -i (Include filenames) switch
- -t (set Type of archive) switch
- -stx (Exclude archive type) switch
- -spf (Use fully qualified file paths) switch
- Command Line Switches
- -scc (Set charset for console input/output) switch
- -sdel (Delete files after including to archive) switch
- -m (Set compression Method) switch
- -slt (Show technical information) switch
- -u (Update options) switch
- -ao (Overwrite mode) switch
- -x (Exclude filenames) switch
- -v (Create Volumes) switch
- -scs (Set charset for list files) switch
- -an (Disable parsing of archive_name) switch
- -bb (Set output log level) switch
- -spf (Use fully qualified file paths) switch
- -sns (Store NTFS alternate Streams) switch
- -- (Stop switches parsing) switch
- -sni (Store NT security information) switch
- d (Delete) command
- x (Extract with full paths) command
- a (Add) command
- b (Benchmark) command
- e (Extract) command
- rn (Rename) command
- Command Line Commands
- h (Hash) command
- u (Update) command
- t (Test integrity of archive) command
- l (List contents of archive) command
- Menu Items and Shortcut Keys
- 7-Zip File Manager
- Options Dialog Box
- About Dialog Box
- Benchmark
- Plugins
- Add to Archive Dialog Box
- Extract Dialog Box
- 7-Zip Plugin
- Thanks
- License for use and distribution
- General Information
- Frequently Asked Questions (FAQ)
- Supported formats
- Performance
- 7z Format