Are you looking for a way to disable the flash media uploader? While there’s probably a plugin for this, we have created a quick code snippet that you can use to disable the flash media uploader in WordPress.
All you have to do is add this code to your theme’s functions.php file or in a site-specific plugin:
add_filter( 'flash_uploader', create_function( '$a','return false;' ), 5 );
Note: If this is your first time adding code snippets in WordPress, then please refer to our guide on how to properly copy / paste code snippets in WordPress, so you don’t accidentally break your site.