.WEBARCHIVE File Extension
File TypeSafari Web Archive
File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.
What is a WEBARCHIVE file?
Safari web archives can be viewed in Safari as well as the iCab and Cruz web browsers. They may also be opened with Apple TextEdit, but the contents might not appear correctly.
NOTE: Safari was developed for Windows until version 5.1.7 but then discontinued.