404 : Page is Not Found ? Now it will be! - Mozilla add-on that uploads archived version of a page.
Version:Ever been annoyed by the '404 Error' or a more understandable one 'File Not Found'? Ever bookmarked your favorite page but few months later when you finally had time to read it in detail, you couldn't find it?
Operating System: Mac OS X
If a page was (re)moved and now shows '404 Page / File / Site Not Found' error, this tiny extension uploads archived version of a page (from wayback machine at archive.org).
If 404 error related message is not put in the HTML title tag of the missing page, extension will not automatically look for an archive, but user can click on 'Archive' button instead (you should place this button in the toolbar). Clicking on that button will show archived version of any page.
'False detection' occurs when an existing page is about this error and has error message in HTML title tag. However, these pages are not common.
When this happens, just click 'Cancel' when confirm box appears, and that page will be added to 'whitelist' and will not be mistaken again for a missing page.