It is extremely important to test your web pages in browsers. This will be an important way to build a web page. This facilitates you to see what others will see. You will also notice a lot of mistakes in your HTML code that tends to cause a lot of errors in browsers.

You need to know that your web pages are not error free. Hence, it is very important to use a valid source code when it comes to optimizing your website for search engines.

The World Wide Web consortium or W3C is responsible for setting the HTML coding standards as well as CSS for web pages. They also give a lot of tools in order to validate your code without charging anything.

The main reason behind using a valid source code is the huge difference between search engine spiders and browsers. Spiders tend to crawl the web indexing web pages as well as their content. These are actually toned-down web browsers that are no mainly focused on displaying for a user. Instead they are more concerned about the content. In short, the search engine spiders are looking at the same code that your web browser is and then look forward to parsing it in the same manner. The basic difference here is that of functionality.

Here, small errors in HTML may cost a lot to the web developers. Hence, W3C validation needs to be adopted. This is especially true in the case of SEO. The standards and specifications are supported in most of the browsers, these days.

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