Disable the WP autosave or revision feature.

These code snippets allows you to disable the autosave or revision function which are turned on by default in WP.

function disable_autosave() {
 wp_deregister_script('autosave');
}

add_action( 'wp_print_scripts', 'disable_autosave' );

To disable the revision feature you should add this line somewhere in your wp-config.php:

define('WP_POST_REVISIONS', false);

download plugin