Exif

The Exchangeable image file format (Exif) is an image file format which adds metadata to existing image formats, such as JPEG.

To read the Date/Time tag do:

• exif --tag=0x132 filename.jpg (reveals Date & Tag)
• exif --tag=0x9003 filename.jpg (reveals Date and Time (original))
• exif --tag=0x9004 filename.jpg (reveals Date and Time (digitized))

To set the Date/Time tag:

exif --tag=0x132 --set-value="1975:01:01 12:01:01" --ifd=0 filename.jpg

See also

• Document Metadata Extraction

Tools

• EXIF Hound

External Links

• Exif 2.2 specification
• Wikipedia: Exif