First of all I have to say that it is a pleasure to write in Fernando's Blog, a WordPress reference blog in Spanish.  In this post we will see the different ways to install a plugin in WordPress and under what circumstances we should use one form of installation or another.
There are three ways to install plugins in WordPress:
- Install WordPress plugin with prior download: we will proceed first to download the plugin and then install it through the WordPress admin panel.
- Install WordPress plugin direct from the Back Office: install the plugin directly from the administration panel (without download).
- Install plugin via FTP: Install the plugin by uploading it via FTP to the Word plugins folder Press
I already told you that to install templates in WordPress you can use the same 3 procedures that we will see to install a plugin.
INSTALL PLUGINS IN WORDPRESS WITH PREVIOUS DOWNLOAD
This way of installing plugins in WordPress is divided into two parts. Previous download of the plugin and subsequent installation through the WordPress administration panel.
This form of plugin installation is usual for the installation of payment plugins such as page builder ] as visual composer or Divi builder, WPML language plugin, or any other premium plugin. Since after the acquisition of it we will proceed to the download and subsequent installation.
It can also be used to install free plugins of wordpress.org . Although in this case it would be faster to use the second method (install plugin directly from the administration panel).
Process of installing a plugin in WordPress with prior download.
1-Download plugin: In First we must proceed to download the plugin that we want to install. Either after acquiring a paid plugin or after visiting the download page of a free wordpress.org plugin.
We will save the compressed plugin on the desktop of our PC.
Important: do not unzip the plugin, we will use it compressed.
2-Access the Administration Panel: for the installation we will access the WordPress administration panel through the URL: http://midominio.com/wp- admin
We will introduce our username and password.
3-Add New plugin: to install a plugin we will go to: "Administration Panel> Plugins> Add New" ] Then we will click on the button named: "Upload plugin" that appears at the top of the screen.
4-Browse: Now we will click on the button: "Examine …" . We will search in our computer the compressed file of the plugin and we will click on: "Open" .
5- Install: Next we will click on the button: "Install now" and the plugin installation process will begin.
6- Activate plugin: once installed the plugin must activate it if we want to start it. To do this we can click the link: "Activate plugin" that appears after installation or go to: "admin panel> plugins> Installed plugins", find the plugin and activate it.
HOW TO INSTALL A PLUG IN WORDPRESS DIRECTLY FROM THE ADMINISTRATION PANEL
This form of install plugins in WordPress is done entirely from the administration panel . That is, you do not have to download the plugin previously.
Obviously this method can not be used for paid plugins. We will only use it for free plugins present in wordpress.org
Process to install a plugin directly from the WordPress desktop
1-Access the administration panel: the first thing we have to do is access the WordPress admin panel. To do this we must access the URL: http://midominio.com/wp-admin . Later we will introduce our username and password.
2-Add New plugin: to add a new plugin we will go to: "Admin panel> Plugins> Add New" .
3- Search plugin: now we will write the name of the plugin that we want to install in the search bar that appears on the right side and press "enter".
4-Select plugin: located the plugin will press the button: "Install now" of the same and the installation process will begin.
5 – Activate plugin: Installed the plugin will proceed to activate it if we want to start it. To do this, click on the link: "Activate plugin" that appears after installing the plugin or go to: "administration panel> plugins> Plugins installed", we will find the plugin and activate it.
HOW TO INSTALL A PLUGIN BY FTP
This is the most technical way to install a plugin in WordPress. It is necessary to perform a previous download of it.
This method can be used for free and paid plugins. It consists of uploading the plugin directly to the "Plugins" folder of WordPress . To work, the plugin must be decompressed.
This method is usually used when any of the previous methods fails.
To use this method we will need an FTP client.
Process to install a plugin via FTP
1- Download plugin: The first thing we have to do is download the plugin we want to install. We will place the plugin on the desktop of our computer.
2- Unzip plugin: To make the plugin work it must be unzipped in the appropriate directory. We are going to unzip it and upload it already decompressed. Although we could also upload it compress it and then decompress it through the administration panel of hosting (CPanel, Plesk, or others)
4- Connection data: After opening WinSCP we will choose the "New site" option in the window from the left. Then in the right window we will select:
i.- Protocol file: we will choose FTP. Some hosting as 1 & 1 use SFTP protocols, in which case you would have to choose "SFTP".
ii.- IP or server name: here we will put an IP or a web address. This information must be provided by our hosting company to make connections via FTP.
iii.- Port: If you use the FTP protocol you must put port 21. If you use the SFTP protocol you must put port 22
iv.- User: here we will put the user for the connection, data that should also be provided by the hosting company.
v.- Password: Here we will write the user's password for the connection via FTP. This information should also be provided by the hosting company.
When the data is filled in, we will click on the "Connect" button that appears at the bottom.
5- FTP client management: en The FTP client will see two screens. The left screen is your computer and the right window corresponds to the hosting . To copy a file from your computer to the hosting you just have to locate the file, click on it with the left mouse button, drag it to the window on the right and drop it on the appropriate directory.
6.- Preparation: what we will do now is to prepare both windows. In the window on the left we will select the desktop that is where we left the decompressed plugin. In the right window we will go to "public_html / wp-content / plugins" which is where we should place the plugin that we want to install.
7- Drag and drop: now we will proceed to upload a copy of the plugin to hosting To do this, in the left window we will click with the left mouse button on the plugin that we want to upload and drag it to the right screen. We will release it in a clean area where there are no folders (so that it is not inserted in a directory)
8- Installed plugin: in a little while the plugin will be placed in the "plugins" folder and therefore it will be installed. You have an "update" button in the FTP client to see the changes.
9- Activate plugin: to activate the plugin we must access the WordPress administration panel and go to: "plugins> Plugins installed. " Find the plugins you just installed and click the "Activate" button.