I have multiple Images - saved as Base64 Strings and now i want to resize these images to get thumbnails of them...
Best would be using Javascript (Node-Server) to r
Your best bet is to use PHPThumb in PHP.
An alternative is to invoke ImageMagick however you prefer:
http://coffeeshopped.com/2009/01/creating-image-thumbnails-using-php-and-imagemagick
http://www.hacksparrow.com/node-js-image-processing-and-manipulation.html