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Renaming multiple files with a prefix and a random string

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Last Modified: 2012-05-07
Hello!

I have got about 1000 image, that I will upload on my website. Image names are: img_0001.jpg, img_0002.jpg, etc.

I would like to protect my images, so I'm using images as a div background, place transparent images on them, encrypt the html code, etc. (by the way I know that images will be on the cache, so they can be stolen)

But if someone will figure out that the names are img_0001,0002,0003..... than he will be easily save them in his PC. So I am searching for a FREE method to rename files with random numbers. But img_xxxx should not be changed, because the images must be ordered by name.

This would be a good name: img_0001_2347650.jpg, img_0002_384675184.jpg, etc.
So I need a free renamer software, but I can't find any renamer, with random strings.

Please help!
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Commented:
Thanks! I like it! Exactly what I want!
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