Description:

libextractor is a simple library for meta-data extraction.
libextractor uses a plugin-mechanism that makes it easy to add support
for more file formats, allowing anybody to add new extractors quickly.

libextractor currently features meta-data extractors for HTML, JPEG,
Ogg, MP3, PNG, RPM, GIF, ZIP, QT, ASF, Real Audio and Video,
PostScript and PDF documents. It also detects many more MIME-types in
a fashion similar to the well-known "file" tool.

Each item of meta-data that is extracted from a file is categorized
into one of currently about 40 meta-data categories (e.g. title,
author, description or MIME-type).

This libextractor package also contains a little binary tool "extract"
that can be used to invoke libextractor from the command line.
"extract" can be used similar to "file", but while "file" currently
supports a wider range of file types, "extract" should be able to
provide more precise and more detailed information for the supported
types of documents (HTML, JPEG, Ogg, MP3, PNG, GIF, RPM, RA, RM, PS,
PDF, ZIP, QT, ASF).