SEO Tip #10: Use Checklists and Validators

There are several ways to validate the accuracy of your website's source code. The four most important, in my opinion, are validating your search engine optimization, HTML, CSS and insuring that you have no broken links or images.
Start by analyzing broken links. One of the W3C's Top 10 SEO Tips would be for you to use their tool to validate links. If you have a lot of links on your website, this could take awhile, so I recommend trying Xenu's Link Sleuth, which you can find on our SEO Software page.
Next, revisit the W3C to analyze HTML and CSS. Here is a link to the W3C's HTML Validation Tool and to their CSS Validation Tool. A new, unbelievable tool just came out that does much better than some of these older ones, and that is the Qualidator Site Analyzer tool, which you can also find listed in our SEO Software page.
The final step in the last of my Top 10 SEO Tips is to validate your search engine optimization. Without having to purchase software, the best online tool I know of for this (now) is my own SEO Audit List, which contains website-level SEO validation, webpage-level SEO structure and keyword optimization, and off-page SEO strategies you should have in your arsenal. You can also use WebsiteGrader.com and other online tools. However, they aren't as inclusive (yet) as my Audit Checklist.