solidshadow

Hi, I'm new to these forums. Can someone please help me convert my save file from 1024kb to 512kb? I have a Pokemon Platinum .sav file that that is 1024kb. I am trying to bring it down to 512kb so I can edit it with pokesav. I tried to convert it through http://shunyweb.info/convert.php but I get an error that the upload has failed.