how to zip and unzip of folder in mac

Free and low-cost third-party compression apps available for the Mac,

Use the below apps,

The Unarchiver, WinZip Mac Edition

Or use the unix tar/untar command from terminal.

An apple article is there : OS X Yosemite: Compress or uncompress files and folders

If you highlite your folder/file and control (right) click>Compress will zip the folder/file.

Double clicking on a .zip file typically uncompresses with the built in ArchiveUtility.

If you are having a problem with the default try Relaunch the ArchiveUtility using the terminal.app copy and paste :

sudo killall -HUP appleeventsd