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Topic: Preventing the downloading of images (Read 1114 times)
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Gadget
RootsChat Marquessate
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Posts: 15380
Gadget by Pels
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Hi
I am going to put up quite a few photgraphs, charts and original collages on my website and would like to prevent them being downloaded by all and sundry.
I know that there is a way of doing this. Could someone please tell me how this is done.
Thanks
Gadget
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Berlin-Bob
Global Moderator
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by My Daughter. Chatting to find her Roots !
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Hi Gadget,
I read an article on this recently and I can remember (without the details) two different ways.
One is to use Javascript to disable the right mouse-click, ("Save image as ....")
and the other is to first load the image, and then load a transparent image on top of the original.
If some one downloads the image, all they can reach is the transparent image.
(a bit like putting a piece of glass over a picture, so that people can only steal the glass)
Unfortunately, in both cases, if someone downloads your whole page, they also get all the images on that page, despite your precautions.
I'll see if I can find the article again, and whether there are any other tips there.
Bob
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Searching for Coleman, Moore, Kallnung in London; Margulies, Remenyi in E. Europe; Ancestors of Hessie Stevenson-Coleman-Baxter (Ireland, 1861) and, of course, any other ancestors for my web-site http://boco.rootschat.net All Census Data included in this post is Crown Copyright (see: www.nationalarchives.gov.uk) |
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Gadget
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Gadget by Pels
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Thanks Bob
I'd be very grateful if you could find it. Don't mind the small compressed images but I've got some that are special.
I have copyrighted but what is that worth on the web 
Gadget
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Gadget
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Gadget by Pels
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Thanks for those links. I rather like the ability to disable the right click - can this be applied to pages as well?
Gadget
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Berlin-Bob
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Hi Falkyrn,
thanks from me too, for those links.
Hi Gadget,
I've now found the article I was looking for and their solution with the transparent GIF is basically the same as
3. Cover images with a transparent GIF
in the link Falkyrn supplied: O2b.net
but using CSS:
First of all define a class for every image you want to protect
img.pic01 { background-image: url(your_picture01.jpg); }
then use a 1-pixel transparent GIF file (transparent.gif):
<img class="pic01" src="transparent.gif" ..... >
As transparent.gif is a bit obvious, there is slightly more protection if you just make copies of transparent.gif and rename them with a similar name to your real file, but as I said in my first reply, if somebody downloads the whole page, this won't help either.
One of the tips in 02b.net was to make "tiles" of your pictures so nobody can download the whole picture, but that is a lot of work ....
Other tips were watermarks (reduces the viewing quality) which lead to another thought: deliberately put a bad quality reproduction of your favourite pictures on your site.
On the one hand, this may defeat the object of one excercise ("nice site ... lovely pictures) but will mean that people are less likely to want to steal.
At some stage you (all of us !!) have to decide how much effort and bother to go to, to stop someone stealing a copy of an image that still stays on the website (not like a stolen painting from a gallery)
Bob
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Searching for Coleman, Moore, Kallnung in London; Margulies, Remenyi in E. Europe; Ancestors of Hessie Stevenson-Coleman-Baxter (Ireland, 1861) and, of course, any other ancestors for my web-site http://boco.rootschat.net All Census Data included in this post is Crown Copyright (see: www.nationalarchives.gov.uk) |
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Gadget
RootsChat Marquessate
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Posts: 15380
Gadget by Pels
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Thanks for all that information Bob and Falkyrn. Lots of reading and thinking. The images that I've already put up (on my current local site) are very much optimised jpgs - fine for browsing but not much use if you download them.
I was planning to do better quality stuff on the 'photos' pages which is why I asked the question.
I'll have to read and think 
Gadget
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Arquebus
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Posts: 266
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Gadget....I tried the digital watermark (Digimarc) that is sometimes part of the PShop program, but because it isn't visible, people will still 'nick' the image anyway.
I have tried the 'disable right click' method, but this can still be got around if 'screen capture' or similar is used.
So, all I did in the end was to 'spoil' the image with an obvious 'watermark' which I designed with Pshop (or PShop Pro) and was very careful with the actual image quality....if you try to save one (you know where to go) you will find that the image is OK until you start to enlarge it.
Al.
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ENFIELD...Colchester, DEARY & DIX...Norfolk & Oz, SLOLEY / SYMONS...Fremington Devon, BAKER...Deopham Norfolk, BANTACK...Ixworth, ALLISON...Suffolk / ALLISTON / ELLISTON/E...North East Essex, HOW /HOWE...North East Essex, SWALES..York / Middlesboro,METCALFE...York, WOODS / MOLLETT / GREEN....Norwich, BRATTY...N.Ireland (Derry and Belfast), MORGAN...Bicknor / Coleford Glos. & Middlesboro. FENN / WENDEN / ROOKARD....North East Essex. SNOW...Hampstead & Devon. BULL...Colchester.
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Gadget
RootsChat Marquessate
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Posts: 15380
Gadget by Pels
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Thanks Al
I'm open to any bright ideas on this front. Still not decided though.
I have lots of rather nice photographs of places and landscapes that I've taken on various 'Ancestral Tours' and some collages that I'm still creating.
I'm not too bothered about the old photos.
Gadget
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Gadget
RootsChat Marquessate
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Posts: 15380
Gadget by Pels
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Thanks again Falkyrn 
I think I might use some type of watermarking on 'my own work' images. I will experiment with the digimark that came with PS or an extra layer that I'll add with my own wm.
Gadget
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Arquebus
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Remember that the higher the quality (or the bigger the file size) of your image, the longer it will take for your website to appear / load...
How many times have you closed on a site because of slow loading?......Loads of people don't wait.
On my site, the thumbnails (gifs) are approx 13kb and the main images (jpegs) are approx 38kb.
Al.
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ENFIELD...Colchester, DEARY & DIX...Norfolk & Oz, SLOLEY / SYMONS...Fremington Devon, BAKER...Deopham Norfolk, BANTACK...Ixworth, ALLISON...Suffolk / ALLISTON / ELLISTON/E...North East Essex, HOW /HOWE...North East Essex, SWALES..York / Middlesboro,METCALFE...York, WOODS / MOLLETT / GREEN....Norwich, BRATTY...N.Ireland (Derry and Belfast), MORGAN...Bicknor / Coleford Glos. & Middlesboro. FENN / WENDEN / ROOKARD....North East Essex. SNOW...Hampstead & Devon. BULL...Colchester.
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Gadget
RootsChat Marquessate
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Posts: 15380
Gadget by Pels
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Oh we know all about that Al
Bob has told us on another thread - we're pretty much genned up on it 
I use NOF 9 (I prefer it to Dreamweaver although I do have Studio 8 ) which allows you to set the download times over various connections. I am using the 56kb modem option.
Gadget
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