Upload image from URL and set as featured image in WordPress

 

Replace non-english characters (i.e. å,ä and ö) on file upload in WordPress

Replace non-english and weird characters in file name on upload in WordPress by adding this to your functions.php.

Updated. Credits goes to http://annalinneajohansson.com/2013/10/10/rensa-specialtecken-ur-filnamn-vid-uppladdning-i-wordpress/.