It was tested with a server log file, which compressed with ZIP had a file size of 18 MB and using 7-Zip was reduced to 8 MB (results may vary, depending on file type). If you are looking for a archiver I commend 7-Zip to you and I can insure that you will like it soon.ħZip is an open-source file archiver, that offers a the highest compression ratio, using the new f 7z format, which delivers compression results that are usually 30-50% better than standard ZIP. I use it constantly and depend upon it so much. Did you use this unique zip and unzip suite before? 7-Zip is one of my best investments and next to Windows XP my most valuable program. Which one do you use commonly, such as WINARJ, UC, LHA, ACE32, WinRAR etc? 7-Zip is my favorite archiver in numerous of compression tools. So an excellent program that creates compressed archives is very important for us. We usually compress the files in order to saving enough space to store more data and files. That makes our computer running more and more slowly and astatically. But we will find that the space of our hard disk does not big enough to store so many files and data sooner or later. Unpacking only: AR, ARJ, CAB, CHM, CPIO, CramFS, DMG, EXT, FAT, GPT, HFS, IHEX, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, QCOW2, RAR, RPM, SquashFS, UDF, UEFI, VDI, VHD, VMDK, WIM, XAR and Z.We often download large numbers of files from websites such as video/audio files, games, E-journal, Flash animations, applications and so on.Packing/unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM.You don't need to register or pay for 7-Zip, 7-zip is is under the GNU LGPL license. The main features of 7-zip, 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 Managerm, powerful command line version, plugin for FAR Manager.

7-Zip is open source software, You can use 7-Zip on any computer, including a computer in a commercial organization.

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