Not found 404 error pages: Difference between revisions
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* [http://en.wikipedia.org/wiki/HTTP_404 HTTP 404 - Wikipedia, the free encyclopedia] , wikipedia | * [http://en.wikipedia.org/wiki/HTTP_404 HTTP 404 - Wikipedia, the free encyclopedia] , wikipedia | ||
* [http://www.404errorpages.com/ 404 Error Pages] | * [http://www.404errorpages.com/ 404 Error Pages] | ||
[[Category:Bookmarks]] | |||
Revision as of 00:36, 11 February 2010
Finding 404 errors on Web Pages
There are a number of extensions that will help you find them, you might also want to use the "PermaTabs Mod" extension so that you don't accidentally open a link into the current tab while further checking on links.
- "LinkChecker" extension
Finding 404 errors in Bookmarks
- "CheckPlaces" extension, checks your bookmarks are valid and the pages still exist. Also checks for duplicates and for empty folders and can restore missing favicons.
Dealing with Bookmarks and web pages providing 404 errors
If the bookmarks are not important you might simply delete them if not wanted. But keeping the bookmark even if invalid may still be useful in finding information at a later time, or to attempt to the new location of a web page.
Sometimes the page you are looking for was not a permanent link and you may use the search form on the page you brought up to find what you are looking for.
Frequently you can find the current webpage by first finding the old page at archive.org, which may be good enough, and from there find the current site using page title and phrases from the archived page to search for the current page. If the not found page does not get redirected to a show a different url on the location bar, the "archive:" bookmarklet below will help find the the archived page.
Even if the location bar does not show the original location, there may be a link within the redirected to page that provides that information or where to look.
It the bookmark has not been put into a bookmark folder it might not be important and would get deleted, such as news story, might not be worth the effort, and might not be freely available anyway. Other one hard to track down are .asp and .aspx page created on the fly by servers and frequently not archived.
Name: archive: Internet Archive Wayback Machine Keyword: archive: Location: javascript:location%20=%20'http://web.archive.org/web/*dc_/'+escape(location);%20void%200 Description: Wayback Machine at archive.org for use from a current or Not Found page. (also see a:)
Name: a: Archive for specified url using Wayback Machine Keyword: a: Location: http://web.archive.org/web/*dc_/%S Description: Also see archive: which will check from a current or Not Found page.
The first bookmark above involves JavaScript so is a bookmarklet and has a keyword to simplify usage, the second bookmark is has substitution and has a keyword to simplify usage.
See Keyword Shortcuts for more information on creating and using keyword shortcuts.
