When you need to give images exact height and width values, use HTML. How to Embed a Video on Tumblr That Will Autoplay. Today's multimedia Web pages and blogs... How to Put Watermarks on Photos ...

probably appear on some of your Web pages. If you ever need to prevent people from seeing those images, you can use CSS to hide the images by changing a single word in your HTML document.

Now if this was the HTML page itself, it would be pretty easy to send an HTTP header to clue in the browser (force expiry IIRC), but the browser will ask for the image in a separate connection ...

HTML is a markup language that forms the basis ... the location of the image that is being displayed on the page. If the image is located on the same domain as the container it will appear in ...