1. Use keyword-rich file names separated by hyphens.
2. Use the alt attribute with keywords.
3. Add an image caption.
To that great list, you can add:
4. Set the title attribute in addition to the alt attribute using the same text. Some browsers require such an attribute to get the tool tip to pop up. Do not use “Photo of Danny Sullivan” or “Picture of Danny Sullivan.” The search engines already know it’s a photo, they just don’t know who/what’s in the photo. Instead, use:
<img src=”/directory/something/danny-sullivan.jpg ” width=”200″ height=”250″ alt=”Danny Sullivan in full rant mode” title=” Danny Sullivan in full rant mode”>
6. Link your thumbnail to a larger, higher resolution version. Put it on a separate, optimized page–so you can track your traffic–rather than linking directly to a JPG. You might also use Flickr, although as Natural Search Blog and SEOROI have pointed out, the site has started no-following most of their links. Nevertheless, it’s still an opportunity to drive traffic.
So, what photo optimization tip are you going to add to the list?