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Thread: How To Protect Your Images

  1. #61
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    Quote Originally Posted by the tree
    Not if it's a visual watermark, such as a big black signature.
    I've already stated that, if you didn't catch it. Anything above 128 for the alpha is what you need. Having it as a solid black, however, is the best way. Adding a bunch of noise for the transparency (make the opacity of each pixel varied for the watermark) makes removing the watermark much more difficult. Also, save your watermarked image as as JPG as JPG changes the colors of pixels some to enhance compression (it's a lossy compression). The lower the quality, the harder it is to remove the water mark as you'd also have to reverse the JPG algorithm and apply the algorithm to remove the watermark. So, watermark your image and JPG it.
    function bluewater() {water.color = blue; while(1) {if(fox.pos==inbluewater){fox.health=0;} else{fox.wantstogetwet=true;} wait(1);}
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  2. #62
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    Jul 2006
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    Hi,
    Created a simple image protection method.
    It works with PHP only, no need java, javascript or flash.
    Here
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  3. #63
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    Quote Originally Posted by jacoka
    Hi,
    Created a simple image protection method.
    It works with PHP only, no need java, javascript or flash.
    Here
    Not very effective!
    Attached Images Attached Images
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  4. #64
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    Print screen the only one way to download these static images.
    But dynamic (animated) images you cannot copy.
    Last edited by jacoka; 07-19-2006 at 03:10 PM.
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  5. #65
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    A simple print screen defeats the protection

    OR

    In Firefox just View Page Info,
    Click on the Media tab,
    Select the image you want, then click Save As...
    (just change the name to the real file name and type in when you do the save)
    Last edited by slaughters; 07-19-2006 at 03:24 PM.
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  6. #66
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    Quote Originally Posted by jacoka
    Print screen the only one way to download these static images.
    Well it's a pretty simple one. Just press one button on the keyboard and your done; hardly effective protection.
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  7. #67
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    Why not just copy the image from the browser cache - that way you get the original image rather than a screen copy of it. Web browsers always copy the images to your computer before they display them on the web page - that's why watermarking is the only method that has even the remotest chance of working.
    Stephen
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  8. #68
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    Jul 2006
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    Unfortunately, you are right
    This protection method is heavy for the beginner and easy for the expert.
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  9. #69
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    Jul 2006
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    In the loader.php is forbidden the caching of files:
    header( "Expires: Mon, 26 Jul 1997 05:00:00 GMT" ); // disable IE caching
    header( "Last-Modified: " . gmdate( "D, d M Y H:i:s" ) . " GMT" );
    header( "Cache-Control: no-cache, must-revalidate" );
    header( "Pragma: no-cache" )
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  10. #70
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    Quote Originally Posted by jacoka
    In the loader.php is forbidden the caching of files:
    You may adjust the computer's clock in order to bypass this.

    In my oppinion one must not care too much about the fact that someone else could stealing the pictures or whichever from a web page. After all, to do what with them?

    Let me tell you a story to understand my point of view.

    I live in a country whose industry is far from reaching the top level of the big developed countries. Some time a go, my uncle, who is an engineer, was invited in Japan to visit one of the most modern factory in the world (it doesn't matter the profile), where the hosts have shown him everything, including their prototypes ready to be launch on the market. Intrigued, my uncled asked the Japaneese: "Aren't you worry that I might steal your ideeas and build the items on my factory?" And they replied: "Nope. You have not in Romania the necessary technology to do that. And even if you would have, we are sure that we are able to launch the product faster than you, at a lower cost."

    See what I mean? I guess that most of the time the effort applied in trying to protect something on the Web is bad-ballanced. The time spent for this could have been used for a better an more profitable activity. It does not worth. I guess so.
    Last edited by Kor; 08-01-2006 at 05:40 AM.
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  11. #71
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    Just look at how much effort the most popular professional sites take to protect the images that they use and you soon get an idea of what is worth doing and what is not worth doing. Of course if you steal their images thay'll take you to court and sue the legs off of you.
    Stephen
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  12. #72
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    Quote Originally Posted by bokeh
    Hooray for printscreen
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  13. #73
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    Quote Originally Posted by aPerson
    Hooray for printscreen
    Oh dear! Another person that doesn't understand what before and after demo means!
    Last edited by bokeh; 08-01-2006 at 11:47 AM.
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  14. #74
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    Quote Originally Posted by bokeh
    Oh dear! Another person that doesn't understand what before and after demo means!
    Cool I'm smart. Sorry about that my mistake.
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  15. #75
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    I keep still on my position. Waistin' of valuable time...
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