Released ffi-extractor 0.1.0, Ruby FFI bindings to libextractor, a library for extracting metadata from a variety of file formats.

libextractor is a simple library for keyword extraction. libextractor does not support all formats but supports a simple plugging mechanism such that you can quickly add extractors for additional formats, even without recompiling libextractor. libextractor typically ships with a dozen helper-libraries that can be used to obtain keywords from common file-types.