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Site Graphics and Multimedia Design Forum

    
"Secured" Graphics
mnw

10+ Year Member



 
Msg#: 156 posted 1:08 pm on May 22, 2001 (gmt 0)

Has anyone tried to "secure" graphics so they either cannot be saved from a website or cannot be printed if they are downloaded? I have a client that wants to put thumbnails of classic car paintings on a website but prevent a visitor from d/l and printing them (he is selling the limited edition of them). Any ideas?

 

agerhart

WebmasterWorld Senior Member agerhart us a WebmasterWorld Top Contributor of All Time 10+ Year Member



 
Msg#: 156 posted 1:15 pm on May 22, 2001 (gmt 0)

I know that it can be done with Java........

Black Knight

10+ Year Member



 
Msg#: 156 posted 1:38 pm on May 22, 2001 (gmt 0)

There's at least one commercially available (reasonably cheap) script to do this - basically the call for the image really goes to the script which then shows but protects the image. I don't know how that works about people saving the image from the cache though...

knighty

WebmasterWorld Senior Member 10+ Year Member



 
Msg#: 156 posted 1:49 pm on May 22, 2001 (gmt 0)

there is a CSS trick which does a similar thing. Basically you can use an empty <span> tag
and set the image as its background. which prevents people from right clicking and 'saving as'

But I dont see how any 'image protection' can really be enforced as all the user has to is hit the print screen button

typophile

10+ Year Member



 
Msg#: 156 posted 2:03 pm on May 22, 2001 (gmt 0)

Visibly watermarking an image with a logo will mean that the user can download it but it will be unusable. In any event a 72dpi jpeg is useless for print reproduction and can really only be re-used on the web. In practice most artists have no problem puting their work online for this reason. Plus if the image is re-used (with your name and url watermarked into it) it is just more free publicity for you.

typophile

10+ Year Member



 
Msg#: 156 posted 2:07 pm on May 22, 2001 (gmt 0)

For an example of visual watermarking go to [photodisc.com...]

skirril

10+ Year Member



 
Msg#: 156 posted 2:36 pm on May 25, 2001 (gmt 0)

A completely different approach would be:

Do not 'secure' the images as such, but make them unusable in other ways: a 320x200x256 color picture at 75dpi looks good on screen, but won't be of much use when printed. Plus, using eg. jpeg compression will make it small, and virtually uneditable.

skirril

10+ Year Member



 
Msg#: 156 posted 2:38 pm on May 25, 2001 (gmt 0)

sorry, just saw that the point was already made by typophile.

please disregard previous post

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