When a WordPress plugin takes too much to upload through your wordpress page or some themes require to manually install WordPress plugins. All you need to do is to follow these steps to install wordpress plugins via FTP in your wordpress without any problem:
1. DOWNLOAD THE PLUGIN
First of all you will need to download the plugin to your computer. If you already have the plugins from your theme just skip this step.
2. UNCOMPRESS THE PLUGIN ZIP FILE
If the plugin is not compressed then you have to upload the folder only, in other hand uncompress the .zip or .rar file and prepare the folder for the next step.
3. CONNECT TO YOUR SERVER
You have two options to install plugins via ftp, first using your CPanel FTP application and second using a preferred desktop FTP application.
4. NAVIGATE TO WORDPRESS PLUGINS FOLDER AND UPLOAD OR INSTALL MANUALLY WORDPRESS PLUGINS
Once you are inside your website directory just go to your wordpress installation folder and navigate to wp-content/plugins and upload the plugins there.
5. ACTIVATE THE PLUGINS
Once you have uploaded the plugin successfully, just go to your page and choose Plugins>Installed Plugins you will find it there and clic activate link that appears below the plugin’s title.