For JCE 2.0.0 only

JCE Add-ons are package files similar to Joomla! Extensions and are in a compressed format such as zip, tar or gzip.

Add-ons are installed by uploading the package file to the server using the Browse¹ and Install Package² buttons. An add-on can also be installed by entering the full path to the package which has been seperately uploaded and extracted to the server.