My artwork is copyrighted. This means that, no, you do not have the right to use it
in any manner whatsoever, even if it's just on a personal website, without my
permission in advance.
Therefore, if you do wish to put an image on your site you are legally obliged to ask
me first. If it's a personal site which will in no way attract revenue or advertise a
product, then I may grant free usage, provided that you link back to me and give full
credit, and provided that I do not find your site's content disagreeable or
controversial.
If your site is in any way commercial, then I am still happy to grant usage, but
naturally I expect you to pay a small fee. (Here's why.)
This will depend how prominent the image is, how famous the site is, how long the
image will be up, etc. Please contact me with these details and we can discuss it.
Any usage of my work for which I did not grant permission, even if it's a personal
site, is an infringement of my copyright and is therefore against the law.