Introduction
Semantic HTML uses particular tags to express the meaning of various webpage elements. By helping search engines grasp the content of the website, these tags greatly improve search engine optimisation (SEO). Additionally, they improve accessibility for those with disabilities, especially those who depend on aids such as screen readers. This study examines the effects of several semantic HTML tags on accessibility and search engine optimisation.

1. The SEO Advantage of Semantic HTML 1.Semantic HTML elements give search engines useful context, which raises their rankings.

2.Clear material Structure: Tags such as header,main, and footer help search engines understand the major material of a page by defining its key sections.

3.Improved Context: Additional context provided by tags like article,aside and figure helps
search engines comprehend and classify information more effectively.

4.Enhanced Search arise Visibility: Rich snippets and highlighted snippets are two examples of more informative search results that can arise from using specific semantic tags, such as time.

1. The Accessibility Benefits of Semantic HTML

1.Through the provision of an organised framework that assistive devices can efficiently understand, semantic HTML enables people with disabilities.

2.Improved Screen Reader Experience: By providing a distinct page layout, tags like , nav,header, and footer make it easier for screen reader users to navigate.

3.Simplified Navigation: Users of assistive technology can easily navigate to “landmarks” that are represented by semantic tags. For example, the primary content area is identified by the main tag.

4.Logical Reading Order: By guaranteeing a logical reading order, semantic HTML enhances comprehension of the information.

5.Contextual Clarity: Essential context is provided by tags such as blockquote which denote quoted content.

Additional Semantic Tags and Their Benefits
Tag
Purpose
SEO Benefit
Accessibility Benefit

main

Defines the main content
Highlights primary content
Helps users skip over repeated elements

aside

Marks side content
Indicates supplementary content
Signals related but non-primary content

figure

Groups visual elements
Adds context to visuals
Identifies images with optional captions

figcaption

Provides captions for content
Improves relevance in image search
Adds descriptions for images

mark

Highlights important text
Emphasizes key terms
Makes key information more visible

time

Shows specific dates or times
Recognizes time-sensitive information
Allows users to identify important dates

details

Expands to reveal more info
Improves readability by hiding extra details
Provides extra info without overwhelming

summary

Provides an overview of content
Improves readability with summaries
Lets users decide to expand or skip

blockquote

Marks content quoted from other sources
Helps search engines recognize quotes
Indicates quoted information for clarity