Saving a Web Archive

If you are using Safari and want to save a copy of a Web page locally, you can use File, Save As. Then choose Web Archive as the file type. This will save not only the text and layout of the page, but all the graphics as well, to a single file. You can reopen that file in Safari while offline. You can also do this in Firefox using File, Save Page As, Web Page complete, but the images are stored individually in a folder.