URL-Info is a free bookmarklet that makes it easy to get information about any web page you are reading on the web. While you can analyze a page by simply plugging in the URL in the bar provided, it is recommended that you install the plug-in so that you can analyze pages on the go.
Information provided includes the official title of the page, the time it takes to load and information and the HTTP headers contained. URL-Info also provides the exact URLs for all images stored within the domain, along with all of the internal and external links. A nice pie chart is also provided if you prefer your data in a more visually stimulating form.
URL-Info.AppSpot.com In Their Own Words
“This tool analyzes the HTML pages : finding headers, internal and external links, show img links, etc.”
Why URL-Info.AppSpot.com It Might Be A Killer
This is a handy little tool for those requiring a quick snapshot of all relevant information about any given URL.
Some Questions About URL-Info.AppSpot.com
Have they considered also adding traffic information for each link and image displayed? 
