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node-red-nodes/utility/exif/README.md

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node-red-node-exif
==================
A <a href="http://nodered.org" target="_new">Node-RED</a> node to extract Exif information from JPEG images.
Install
-------
Run the following command in the root directory of your Node-RED install
npm install node-red-node-exif
Usage
-----
Extracts <a href="http://en.wikipedia.org/wiki/Exchangeable_image_file_format">Exif</a> information from JPEG images.
This node expects an incoming JPEG image as a buffer. If Exif data is present, it extracts the data into a **msg.exif** object.
If the Exif data also contains location information this is extracted as **msg.location**.
**msg.payload** retains the original, unmodified image buffer.