The primary "feature" of a .7z file is its ability to bundle many large files into a single, much smaller package. Key Features of the 7z Format
It typically achieves 30–70% better compression than standard ZIP files, especially when using the LZMA2 algorithm. Computer.7z
To "produce" the contents of a 7z file on your computer, you need a compatible archiver: The primary "feature" of a
Theoretically, it can handle files up to 16 billion gigabytes (16 exabytes) in size. you need a compatible archiver: Theoretically
It can compress multiple similar files together as a single data block, which significantly increases the compression ratio for redundant data. How to Produce or Use the Archive