I have used both Shutterstock and Istock images. How you are allowed to use them depends on which licence you have. Which licence you have depends on which fee you pay the fee is dependent on how you wish to use them and what resolution you have.
Generally, there is no need to attribute those purchased images either to the website or anyone else.
Just because there is an image on the Internet does not mean that it is public domain and it’s very dangerous to simply use images which you have got from the Internet, if you don’t have consent because these image libraries have a tracking pixel in their images and if you use it without consent, their Robot software will pick it up as it constantly trawls the Internet looking for unlicensed images and the next thing you will get is a bill from the image owners solicitor which you would then have to deal with.
Hence, to answer question 2, no, you can’t do that.
The same applies as to 3 although if the image is from an individual, the chances of litigation following is remote but still possible.
Re: question 4, that would normally be allowed but it depends on the terms of that particular section of the website.
There are exceptions to copyright when you can use it without consent but they are limited. Here is the government’s view
the only way to be guaranteed that you can use this imagery is to get consent or to buy the image.
Does that answer the question? Can I answer any specific points arising from this?
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