How Does Validating Site Code helps your SEO?
- mostly consistent display for your sites with many browsers (which display the one and same - unvalid - page very differently) and making your site more readable for different user agents
- helping exposing and repairing barriers to accessibility
- encouraging compliance with existing accessibility guidelines - such as W3C's Web Content Accessibility Guidelines (WCAG) or Section 508
- making websites accessible to all individuals, including those with disabilities
- demonstrating professional coding skills
Here are 3 interesting Schema Validators or Rich Snippets Semantic Markups Checkers as well as deep code validators that any SEO Auditor will definitely find useful in his/her SEO Audit.
1- Google Structured Data Test
- You can find it under the Webmaster Tools or in the Google Structured Data Test external Link
- You can either enter the Page URL or copy and Paste the code snippet to validate (test/Check)
- You can also find examples and Previews of Structured Data (authors, Products, events, Music, people, recipes, reviews, etc.)
- Allows validation of XML 1.0 documents according to W3C specifications. » XML Validator «
- Standalone grammar validator for XML DTDs and Schemas. » DTD / Schema-Validator «
- Advanced Feed-Validator for » RSS and Atom «
- Validates your » Google Sitemap(s) « on XML conformity and specific requirements
- Lets you validate XML documents such as XHTML against the appropriate schemas.
- It performs a more accurate validation than the W3C validator.
- If you send XHTML documents as text/html, you should also test them in XHTML Proxy.
- This service does not perform generic XML Schema validation.
- While it can verify the well-formedness of any XML document, validation is only available with the built-in schemas.
- This validator does not download any DTD or schema files, but relies on its own ones.
- You can validate XML documents by URL, by file upload or by direct input.
- You can validate fragments of XML documents. You can easily validate the page that is currently displayed in your browser with this bookmarklet.
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc. If you wish to validate specific content such as RSS/Atom feeds or CSS stylesheets, MobileOK content, or to find broken links, there are other validators and tools available. As an alternative you can also try our non-DTD-based validator.