EXIF.org is an unofficial site dedicated to EXIF and related resources. EXIF stands for Exchangeable Image File Format, and is a standard for storing interchange information in image files, especially those using JPEG compression. Most digital cameras now use the EXIF format. The format is part of the DCF standard created by JEITA to encourage interoperability between imaging devices.
Please note that this site is solely here to provide a convenient point of reference for users of the EXIF standard, and is neither owned nor maintained by the creators of EXIF. It is as such wholly unofficial.