how to generate website preview on different devices automatically

we've all seen it: a website shown in the portfolio of a webdesign company, illustrated as seen on a computer screen, a tablet and a smartphone;
Is there a way to generate all of those automatically?

is there an alternative to taking screenshots of the design and pasting it into photoshop templates, in order to show our clients how the site will be seen on different devices? a program that would take a url and generate all that eye-candy automatically?

does bumping work on bhw? :/

lol i wish i could help you! But unfortunately i have the same question haha

If I understood correctly, this is what you want:

hey man, thanks for the answer!
that's not exactly what I was looking for, but fortunately, I have found exactly what I wanted, in the meanwhile!

I was actually talking about PSD templates of devices where you can easily include screenshots of your page and it would automatically generate the needed graphics. Sorry if I didn't express myself clearly enough the first time; I found some on a site, can't remember the name, but I know I searched for something like "wordpress themes nulled", got on one of the first few results, and inside the website, I navigated to a section like "graphics templates" or something like that; there, I found plenty of things like this, amongst logos and such, which all came from sites like themeforest, and which I was able to use in my original purpose.

Thanks again for your reply, cheers!