Php Imagemagick and/or gd modules can be used to create or modify images. Resizing and cropping of uploaded images are its most widely used functions. Specialized functions like watermarking images, creating frames or borders around images, merging two images etc can also be done using these Image magick gd modules installed and compiled into php. Most of image galleries scripts used these modules for creating thumbnails our of larger pictures for indexing these images and displaying them properly. Dynamic php gd bar charts can be also created to display statistical data.