Fits (flexible image transport system) is a data format most used in astronomy.

qfits is a stand-alone library written in c to interact with files complying with the fits format. it is fast and portable over any kind of posix-compliant platform. functionalities offered by this library are:
* header queries (get keywords, values).
* header manipulation (load/modify/save).
* header/data offset queries.
* pixel loading/saving to memory.
* support for files of any dimension (naxis).
* support for fits extensions, including ascii and binary tables.