The file with the 7z extension is an LZMA archive, which can contain almost any type of files inside, including very large files. In addition, another feature of the format is the fact that, unlike many other options, it is able to work with files up to 16 GB.

It has a high compression ratio, is characterized by an open architecture, provides an opportunity to choose a method of compression and file encryption and has strong compression.

A feature of this format is that it supports several data compression and encryption algorithms, which makes it unique and universal, suitable for any files. If earlier, 7z format was limited only to the world of Windows so now such archives are often created and used in macOS. They can often be found when you download something online. In brief, 7z files are simply compressed data in the form of a single archive. For example, in one 7z Mac archive, there can be many documents of different types, a whole folder with pictures, a program, etc. The 7z is a common data compression format that allows you to convert any files into a compact archive. So, what is 7z? And why it causes so many troubles for the users. The first and the most common is the lack of a corresponding 7z Mac application among those installed on your computer. There is a situation in which you cannot open on your Mac 7z files.

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