Tools to check code etc

Does anyone know of any good links for tools that will check to see if the code used in our site is search engine friendly? Or even any other tools that will evaluate one's site and tell it about any problems that may be causing the site to not be listed in the search engines? Thank You.

Shameless plug for my tool: Spidertest

Here's a report on your Wellington case site

It doesn't come out too bad, it just doesn't like all your nested tables.

You should always have valid HTML/XHTML for good search engine rankings. Make sure you use the W3C's validators.

http://validator.w3.org/

I disagree that you have to have validating code. The use of CSS for layouts helps search engine rankings because it reduces the amount of HTML on a page and therefore makes the content more prominent. Making sure the code validates is just part of making sure it works properly in all browsers, rather than for the spiders. However, you can make a page that validates as HTML 4.01, or XHTML Transitional, that has lots of code on the page that the search engines will dislike.

Should an HTML page be semantically correct, i.e. should it have important headers in H1 tags, subheadings in H2 tags, use <b> or <em> to enhance words? Yes, this shows the search engines what is important on the page in a way they can understand easily, and also helps with accessibility and document portability. These are things that you tend to get in to when you want validating code.

However, it's possible to create a non-validating page that will rank more highly than a validating page, and you'll notice Flash files and PDFs can get ranked more highly than valid HTML files.

PaulS your tool is pretty fast. But please remove things like "&nbsp;" from being counted.