Installation
1. Download the main RSGallery2 component
On github look for the newest version (v4.2.0++) Releases of component
Inside the assets you will find a zip file with a name like RSGallery2_Component_4_2_0.zip. Download and install the newest zip file matching this name and a newer version number
2. Install RSGallery2 component
RSGallery2 is installed like all other Joomla! extensions. Log in to the Administrator section, click on Extensions > Manage ->Install
(1) Select "upload package file" tab
(2) Drag and drop the downloaded zip file into the drop area
On successful upload you will get a message similar to following image
On upload error try to transfer (?the content of?) the zip file to the server and use "Install from folder". (Some php.ini settings restrict the size of uploaded files)
Clicking on (1) will lead to the RSGallery2 control panel