Pdf File Compressor Free Download Windows 7

7-Zip is open source software. Most of the source code is under the GNU LGPL license. The unRAR code is under a mixed license: GNU LGPL + unRAR restrictions. Check license information here: 7-Zip license.

You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip.

Features

•     High compression ratio in 7z format with LZMA and LZMA2 compression
•     Supported formats:
•         Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM
•         Unpacking only: ARJ, CAB, CHM, CPIO, CramFS, DEB, DMG, FAT, HFS, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VHD, WIM, XAR and Z.
•     For ZIP and GZIP formats, 7-Zip provides a compression ratio that is 2-10 % better than the ratio provided by PKZip and WinZip
•     Strong AES-256 encryption in 7z and ZIP formats
•     Self-extracting capability for 7z format
•     Integration with Windows Shell
•     Powerful File Manager
•     Powerful command line version
•     Plugin for FAR Manager
•     Localizations for 79 languages

Compression ratio results are very dependent upon the data used for the tests. Usually, 7-Zip compresses to 7z format 30-70% better than to zip format. And 7-Zip compresses to zip format 2-10% better than most of other zip compatible programs.

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