Technically, it is an open-source Perl library written by Phil Harvey. What is ExifTool?įirst released in 2003, Exiftool is a command-line utility program. There are several ways to edit photo metadata, but you can easily edit or fix photo and video Metadata using ExifTool. So, for safety measures, you should always check and modify the metadata of your files before you post them online. Naturally, when you upload such media files on the internet, you’re sharing personally identifiable data in the form of this metadata. But the purpose it is used for can differ from person to person for example, photographers use this data to inspect various elements of a photo or video, such as the camera make, model, ISO, aperture, etc… In contrast, home users make use of it to remember when they captured certain precious moments. Metadata is useful in many ways, especially when searching or representing data.
Smartphones also do the same, adding extra tags such as GPS data to show exactly where the photo was captured.
For example, cameras add data about the manufacturer and its settings in a section outside the image data.
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