What is the purpose of HTML tag semantics?

The semantics of HTML tags are used to structure the content of a web page in terms of its meaning and role, rather than just appearance. This helps:

• Improve site accessibility for users with disabilities, as assistive technologies (such as screen readers) better understand the structure and content.
• Enhance SEO, as search engines more easily analyze and index the content.
• Simplify support and development of the code, as semantic tags make the page structure more understandable for developers.

Example: instead of using <div> for a header, it's better to use <header>, for main content — <main>, for navigation — <nav>, for articles — <article>, etc.