Function: Crops an image to a given size.

Function: Generates attachment meta data and create image sub-sizes for images.

Function: Converts a fraction string to a decimal.

Function: Converts the exif date format to a unix timestamp.

Function: Gets extended image metadata, exif or iptc as available.

Function: Validates that file is an image.

Function: Validates that file is suitable for displaying within a web page.

Function: Loads an image resource for editing.

Function: Retrieves the path or URL of an attachment’s attached file.

Function: Copies an existing image file.