With Memento, you are able to access a version of a Web resource as it existed at some date
in the past, by entering that resource's HTTP address in your browser like you always do, and by specifying the desired date in a
Obviously, you will only get to see old versions of a resource if some exist, for example, in a web archive
or a content versioning system. But if old versions exist, and if they are hosted by servers that support the
you will seamlessly be able to access them.
Because most public web archives around the world already support the protocol you can start your web time travel right away by installing
the Memento extension for Chrome
. One day, hopefully, also browsers will support the
protocol and browser extensions will no longer be required.