What is semantic markup?

Semantic markup is the practice of using HTML elements and structured data to clearly describe the meaning and purpose of content on a webpage. It helps search engines, AI systems, and assistive technologies understand what the content represents, rather than just how it looks.

Semantic markup includes:

• Semantic HTML elements such as <header>, <nav>, <main>, <article>, <section>, <aside>, and <footer>, which define the structure and purpose of page content.
• Structured data (schema markup) using formats like JSON-LD and the Schema.org vocabulary to describe entities such as products, organizations, articles, reviews, FAQs, and events.

For example, a jewellery product page can use semantic markup to identify:

• The product name.
• The brand.
• The price and currency.
• Availability.
• Customer ratings and reviews.
• Product images.
• Material (gold, platinum, etc.).
• Gemstone type (diamond, sapphire, emerald).

Semantic markup provides several benefits:

• Helps search engines and AI systems understand content more accurately.
• Improves eligibility for rich search results and enhanced listings.
• Strengthens entity recognition and semantic relationships.
• Supports SEO, Answer Engine Optimization (AEO), and Generative Engine Optimization (GEO).
• Improves accessibility for screen readers and other assistive technologies.
• Makes content easier for AI systems to retrieve, interpret, and potentially cite.

By using semantic markup, websites make their content more understandable to both machines and users, improving visibility, trust, and discoverability across traditional and AI-powered search experiences.