The easiest way to backup your wordpress file is with a FTP Client.Example filezilla.FileZilla is a free, open source FTP client for Windows, Linux and Mac OS X distributed under the GNU General Public License.
The most important files to back-up are the files in the wp-content folder. This folder includes your theme files, plugin files and image uploads. The core WordPress files, wp-admin folder and wp-includes folder can easily be restored by simply downloading the latest version of WordPress.
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