• fast read and write access to the Exif, IPTC, and XMP metadata of an image. • an easy to use and extensively documented API. • conversions of Exif and IPTC metadata to XMP and vice versa. • a smart IPTC implementation that does not affect data that programs like Photoshop store in the same image segment. • Exif Makernote support: ◦Makernote tags can be read and written just like any other metadata. ◦a sophisticated write algorithm avoids corrupting the Makernote. • a simple interface to extract previews embedded in RAW images and Exif thumbnails. • set and delete methods for Exif thumbnails.

• Converting Bézier paths into vector paths. • Sorting vector paths into svp's. • Antialiased rendering of svp's. • Computation of stroke paths (with line cap and join options). • Intersection, union, and difference of svp's. • Finding covering uta's for rectangles, vector paths, and svp's. • Union of uta's. • Decomposition of uta's into minimal set of rectangles. • Alpha-compositing. • Affine transformation of paths and images.