Solid Compression

Solid archiving significantly increases compression when adding a large number of small, similar files. But it also has a few important disadvantages:

slower updating of existing solid archives;
to extract a single file from a solid archive all preceding files must be analyzed. This makes extraction from the middle of a solid archive slower than extraction from a normal archive, but, if all files are to be extracted from a solid archive, the extraction speed will not be affected.

Solid archiving is preferable if:

the archive is updated rarely;
it is not necessary to frequently extract a single file or only part of the files from the archive;
compression ratio is more important than compression speed.

Steps of Solid Compression

1.Right-click the selected files/folders,click "Add to archive..." on the pop-up menu.

2.Pop-up "Archive name and parameters" dialog, tick "Create solid archive" on the General tab.