Machine-testable

Include the required title element, plus any optional HTML head elements (such as link).

Resources

• A simple guide to HTML head elements
• GPF - General Policy Framework (PDF) - 1.9 - Strategy (Interoperable Technologies)
• head: The Document Metadata (Header) element
• HTML Living Standard
• Layman's Coding: What is the minimum HTML you need for a website?
• What should the title tag length be in 2025?

Machine-testable

Include necessary meta tag references that search engines and social networks recognize, using a recognized name scheme such as Dublin Core Metadata Initiative (DCMI), Friend Of A Friend (FOAF), or RDFa.

Resources

• A simple guide to HTML head elements
• DCMI Metadata Terms
• Friend Of A Friend
• Meta tags and attributes that Google supports
• MetaExtensions
• W3C RDFa Specification

Machine-testable

Use Microdata, Structured Data (Schema), or Microformats in content for which a widely used structured data format exists.

Resources

• GPF - General Policy Framework (PDF) - 1.9 - Strategy (Interoperable Technologies)
• How to get a Knowledge Panel for your brand, even without Wikipedia
• Introduction to structured data markup in Google Search
• Microformats
• Open Graph Protocol
• Structured Data
• The digital butterfly effect: Sustainable websites and SEO

• Environment: Adding rich metadata allows your website to be indexed correctly within search engines and social networks, allowing visitors to find content from your website or product quicker (often without even requiring a visit), saving clicks and energy.
• Transparency: Used correctly, metadata can ensure clients find the correct site, and if they are just after contact details, potentially do not have to even visit the page (wasting bandwidth).
• Performance: Visitors spend less time jumping through pages, as they will likely land on the page they wish to browse through searching (if they came via a third-party tool).
• Economic: Increased awareness within a search engine or social network may lead to more visitors or customers.
• Conversion: Recognized microdata usage can lead to a better search engine position.

• code
• content Provide a website name to Google Search.