Add Image Alt Text automatic

function add_alt_text_to_images( $html ) {

    // Check if the image has a title attribute

    if ( preg_match( '/(title=["\'].*?["\'])/', $html, $matches ) ) {

        // Get the title

        $title = substr( $matches[0], 7, -1 );

        // Check if the image has an alt attribute

        if ( ! preg_match( '/(alt=["\'].*?["\'])/', $html ) ) {

            // Add the alt attribute with the same value as the title

            $html = preg_replace( '/(title=["\'].*?["\'])/', '$1 alt=' . $title . ' ', $html );

        }

    }

    return $html;

}

add_filter( 'the_content', 'add_alt_text_to_images' );