HOW TO PREVENT 404 ERRORS IN WORDPRESS

The best way to avoid the 404 errors is that it is to proactive,and the first thing is that all the links is to permanent from the start.If you want to built the blog,first thing is to noticed that you want to set the permanent links and this links could not be changed in the future.Send a quick note to the person who runs the site with the link and ask them to change it to the correct link. Most site owners will be more than happy to do so because they don't want their blog or site to load with error.Don’t take down old content. If you have to take something down, rather than deleting it entirely, create a custom page at that address that provides some information on what used to be there, or links to other posts and pages that might be of interest to the visitor.These 404 errors can be cleared by using the following plugins.The most used plugins for this are listed below.
1.404 notifier
2.Smart 404
3.Google 404
4.JH 404 logger
5.The Free 404 plugin
6.Redirection
7.Permalinks moved permanently
8.WP 404 images fix
9.Dunstan-Style error page
10.Useful 404 errors