This could be especially useful for creating killer screen shots for your link bait: 7. PageDiff allows to compare HTML code differences of several pages side by side: ...

SEO Audit Tips: 8 Examples of Why Your Source Code Matters When performing SEO audits, it’s incredibly important to dig into a website’s source code to understand what's present. Unfortunately, coding ...

Factoring common JSP or HTML code out of multiple pages and into a single file improves maintainability (you need to make changes in only one location) and reusability.

Furthermore, in certain cases, the DOM signals may even take precedence over contradictory statements in HTML source code. This will need more work, but was the case for several of our tests.