1, zip: universal decompression format, the earliest decompression format, with the highest penetration rate; Many smart phones now support the "zip" format; Low decompression rate, fast decompression speed and low security. The disadvantage is that the decompression limit of a single file is 4GB.
2.7z: This format is a popular compression format at present, with a very high decompression ratio, that is, the decompression rate is very high, the decompression speed is higher than "rar", the decompression speed is faster than "rar", and the security is very high. The key is that it is open source and free, and all users can use this format for free.
3.rar: patented decompression format, the decompression file has no size limit, and the decompression speed is faster and slower, which is safer than "zip".
Brief introduction of self-decompression method
Simply put, "self-extracting" is a compressed file with a suffix of ".". Exe "is the same as Microsoft's software format suffix. You can download this file to a computer on the window platform and double-click it to decompress it yourself, without decompression software, which is convenient for computers without decompression software.
But there is a big disadvantage, because the "self-extracting" file actually embeds the extracted components, so the compressed package is generally larger than the original file, which not only has no compressed size, but also occupies storage space; In addition, many virus files are easily mixed in "self-extracting" files, so the security is not high. For untrusted "self-extracting" files, it is recommended to sterilize them before extracting them.
Self-decompression has a wide range of applications. Even if someone else's computer doesn't have decompression software, others can quickly open your "self-extracting" file.
The above contents refer to Baidu Encyclopedia-compressed files.