Since there are several packages for this purpose, we'll show small example scripts for each. It's up to you how you'll use this data, but the first step is knowing how to retrieve this data. The rationale for accessing this data, is we need to use it, to help drive an application, to show some data to the user, or anything else. As we'll see there is a long list of possible data to store in images. Or, we could store descriptions, captions, or other text items, that are meant to be displayed by a content management system. Much of it is data about the camera, the exposure, and even the geographical location, but it is possible to attach arbitrary information.Ī possible use is sorting images by the location where they were shot. But, there is other non-visual data items that can be included in an image. The pixels are the visual part of the image that we see.
What, precisely, is image metadata? It is the extra data carried in the image file beyond the pixels.
Our goal in this article is learning about accessing image metadata in a Node.js program.
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