Define the default visual or text html editor in your WordPress website for posts and pages

The WordPress website often has two options for the editor which is the default visual editor and the text or html editor. You can define which editor is default without a plugin if you add this code to your functions.php file. You may want to backup your WordPress website before you make updates to the functions.php file.

Do the visual editor as the default editor

/**
 * Define visual editor as default editor
 *
 * @author WPSnacks.com
 * @link https://www.wpsnacks.com
 */
add_filter( 'wp_default_editor', create_function('', 'return "tinymce";') );

Do the text html editor as the default editor

/**
 * Define text html editor as default editor
 *
 * @author WPSnacks.com
 * @link https://www.wpsnacks.com
 */
add_filter( 'wp_default_editor', create_function('', 'return "html";') );

Now if that works for you it would define the default editor on your WordPress website on there.