Metadata of Images

April 15, 2009 at 9:59 am Leave a comment

Have you posted an Image or 2 on the Internet ? Of course … Who doesn’t nowadays. Everyone is hooked to at least  one social networking site. Be it the popular Orkut and FaceBook  or  Web-blogs all have images of all types.

You might ask me … So What ?? Well i would be more than happy to answer that.  Did you know that when you take a photo with a digital camera, a truck load of background information is embedded into the file called Exchangeable image file format (EXIF   http://en.wikipedia.org/wiki/Exchangeable_image_file_format) metadata, including when the photo was taken, the make and model of the digital camera, the exposure, shutter speed, lens focal length, whether the flash fired, and some other interesting tidbits. Sure, if you have nothing to hide about ,then you should not be worried but still why give away more information ?

Digital cameras save JPEG (.jpg) files with EXIF  data and  Camera settings and scene information are recorded by the camera into the image file. Believe it or not, Preview application on Mac OS X can display all this EXIF metadata — you just have to know where to look.To see the EXIF data for the current image, just press Command-I, then click on the Details tab, and if you scroll down a bit, you’ll see a header for EXIF Properties, along with the full scoop on your image.
check the below image that i had taken for its meta data.

This is on Leopard 10.5

generalinfo

nandimoriinfo

This is on Tiger 10.4.10

nandimeta

OK, all said and done … but how can i remove or clean Up the image you want to upload ? No need to get paranoid, you got lots of applications on Windows but i am surprised to see that there not even one good application on Mac . The closest that i could been in getting a tool was SnapCleaner 1.3 and that too its not free !  This application didn’t work for me and hence i wouldn’t recommend it at all. For Windows you can use this small application called JPEG & PNG Stripper
You can also use this website  http://camerasummary.com which is an online EXIF data extractor that provides information.

Next time you have personal photos and want to upload it on to the web especially social networking sites … TAKE CARE !

— Go Green, Save a Tree —

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Entry filed under: EuReKa.

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