Hiding text in an image file

No, I'm not being illegal, I need this for an ARG I'm making for the release of my 'Spider:Spiked' film.

What I need is to be able to put some text into the source of an image file, so when you open the image in notepad, you see the text at the end of the jumble of code. This CAN be done, as it is on a website that is supposed to be for the next Lost ARG, but it is fake. http://artemis.hansoadoptions.org/ if you save the image on the page, open it in notepad, you will see a small web addy at the end of the jumble of code. Dont go on the link, its a 'make money fast' thing, but you get the idea of what I want to do

I really dont want to use 3rd party stenography software, as this will take away from the feel of the ARG.

Thanks guys

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Well, if you open a jpeg in a hex editor you can append it to the bottom of the file. It may break the file, but its worth a shot. I don't have a hex editor on my mac otherwise I'd give it a shot, but it should work.

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is Windows Notepad a hex editor? If so, then I already tried it, it broke the image, What I really need is for the image to remain there, but with added text in the source of the file. Whoever made the image linked to above really knew their stuff I guess

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No, Notepad is most definitely not a byte editor. Editing with Notepad will definitely break the file.

Here's a good list of hex editors.

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I've looked for the same kind of thing instead of visibly watermarking my photos, unfortunately I havent figured out anything yet

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Watermarking your photos can work better in some cases. It's fairly common for people to load up an image and make small alterations, touch it up, crop it, whatever and save as a new file which then goes online... Any kind of alteration whatsoever would immediately undo the "hidden hexedited watermark".

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I agree, having a visable watermark is much more effective. Also, some people can just hit 'prt scn' button if they cant download the image, so to sum up, the only way to REALLY protect your images is to place a visable watermark on them, I'll check out those hex editors, but there again, most of the people playing my ARG wont think hard enough to look at the source code for an image. Just because people did it with the Lost ARGs doesnt mean I'll get the same amount of people working on my ARG. But thanks again anyway, I might give the clues out in another way

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...what on earth is an ARG?

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ARG = Alternate Reality Game. Its what LOST had between seasons a while ago, Hanso Foundation etc....

Basically its finding clues about certina things, pulling websites apart, puzzles, etc. A game, but it sits on the edge of being real

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I read about it a bit on Wikipedia but I'm still unclear as to how the concept of it is actually materialized. It comes across as being mostly theoretical with little existing applications.

Is there something tangible I can see? Online maybe?

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