X1.7z Instant

It can handle archives up to 16,000,000,000 GB.

The format is an open-source, highly efficient compressed archive container. It was originally introduced as the native format of the 7-Zip software and is known for several key features: It can handle archives up to 16,000,000,000 GB

If a .7z file is too large for email or specific storage, 7-Zip can split it into smaller "chunks" (e.g., X1.7z.001 , X1.7z.002 ) which can then be rejoined. How to recover corrupted 7z archive How to recover corrupted 7z archive When using

When using 7-Zip via the command line, the -mx switch determines the compression level. The number following "x" (ranging from 0 to 9) dictates how hard the computer works to shrink the file: No compression (Store mode). x1: Fastest compression; uses a 1 MB window size . x5: Normal compression (Default). x5: Normal compression (Default)

It supports AES-256 encryption , allowing you to protect the names of files within the archive as well as their content.

It typically achieves 30–70% better compression than the standard ZIP format.

To create a fast archive using the "x1" level, the command would look like: 7z a archive.7z -mx1 source_folder .