Extracting compressed .zip or .7z archives with 7-Zip

LZMA2 (optimal for multi-core processors) or LZMA.

To customize this "deep" post for your exact needs, tell me:

Set to "Solid" or a high number to treat files as one continuous stream, significantly improving compression for many small files. 2. The "Deep" Approach: Security & Encryption

If you need to compress massive files or want the smallest possible size, use these settings in the dialog: Archive Format: 7z. Compression Level: Ultra (highest possible compression).