Determine last modified date of a web page

Many web pages that do not list the last date and time they updated, modified, or changed. This information can be determined by using one of the suggestions in the following sections.

Internet Archive

Although this site will not give you an exact modified date, it should give you a general idea. Also, it allows you to view the history of a page, even if it is offline. Visit the Internet Archive, and then enter the URL of the page in question into their search bar.

JavaScript in address bar

Copy and Paste the JavaScript string from the box below into the address bar.

javascript:alert(document.lastModified)

Note: With dynamically generated content this will not work. Also, newer Internet browsers with an Omnibox require the user to manually type in javascript: even after they paste the entire string.