Google Webmaster Tools is a great tool that provides a good bit of insight into how Google is crawling one’s site and how a webmaster can improve things that’ll make his site more appealing to Google’s spiders. It includes various sections dedicated to different aspects of site optimization, and one of the important sections is Crawl Errors.
The Crawl Errors section shows you the errors Google is encountering while crawling your site. It could be pages not found, pages that end up throwing 404 errors, unreachable destinations on the site etc. Google recently revamped this section making it much more attractive visually and feature wise.
The section is now divided into two main parts: Site Errors and URL Errors. The Site Errors section shows you errors related to DNS, server connectivity and the robots.txt file.
The URL Errors section is more important because it shows the 404s and the URLs that deny access to Google. Of course, you would know the ones which you have deliberately hidden from Google’s eyes but if there are certain unintended blocks that show up in the list, you can always take action to fix them.
As you click and browse your way into this new Crawl Errors interface, you’ll find that Google has taken care to remove clutter while overhauling the interface to include new stuff. Everything appears neatly categorized and you don’t waste time searching for a specific error.
Another very important feature that has been introduced with this new interface is the ability to mark errors as “fixed” meaning you are telling Google that you have fixed the error on the site and there is no need to show it in webmaster tools.
Overall, this is a welcome change for website owners and this makes the Webmaster Tools much more useful for all kinds of webmasters.