A .webarchive file is a Safari web archive file. In other words, a .webarchive file is a web page saved by Safari that can be viewed by the user even when the computer is not connected to the Internet. ... The web archive feature included in Safari is a useful one, as it allows users to view a web page offline.What is the Internet Archive?
The Internet Archive is a non-profit website that archives websites as well as media such as film and video, and books online. They have a wide assortment of historical and cultural collections that can be a great addition to a WordPress.com website.