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URL: https://www.coursera.org/learn/semantic-html-accessibility

⇱ Semantic HTML & Accessibility | Coursera


Semantic HTML & Accessibility

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Semantic HTML & Accessibility

Included with

Gain insight into a topic and learn the fundamentals.
Intermediate level

Recommended experience

1 week to complete
at 10 hours a week
Flexible schedule
Learn at your own pace

Gain insight into a topic and learn the fundamentals.
Intermediate level

Recommended experience

1 week to complete
at 10 hours a week
Flexible schedule
Learn at your own pace

What you'll learn

  • Build semantic, structured web pages using HTML5 and landmark elements

  • Apply ARIA roles and keyboard navigation to improve web accessibility

  • Optimize website performance using Core Web Vitals and responsive markup

  • Create modern, accessible UI features using <dialog>, PWAs, and Web Components

Details to know

Shareable certificate

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Assessments

12 assignments

Taught in English

Build your subject-matter expertise

This course is part of the Modern Web Development: Advanced HTML & CSS Specialization
When you enroll in this course, you'll also be enrolled in this Specialization.
  • Learn new concepts from industry experts
  • Gain a foundational understanding of a subject or tool
  • Develop job-relevant skills with hands-on projects
  • Earn a shareable career certificate

There are 3 modules in this course

"The Semantic HTML & Accessibility course is designed for web developers and designers who want to build inclusive, high-performing websites using modern HTML standards. Even if you're new to accessibility or haven't explored semantic markup in depth, this course will guide you step by step to create structured, accessible, and search-optimized web content.

In the first module, you'll explore the foundations of semantic HTML, including the difference between semantic and non-semantic tags, the role of landmarks and headings, and how these elements support screen readers and search engines. You’ll also learn how ARIA roles enhance navigation and accessibility. The second module dives into performance and user experience. You’ll learn to optimize your pages using Core Web Vitals like LCP, CLS, and INP, apply responsive design with clean HTML markup, and implement features like lazy loading and native <dialog> modals to enhance interactivity across devices. The final module introduces modern enhancements such as Progressive Web Apps, Web Components, and structured data. You'll learn how to configure web app manifests, use Shadow DOM for component encapsulation, and prepare your site for global audiences with localization and SEO-friendly markup. By the end of this course, you will confidently: 1. Structure web pages using semantic HTML tags that improve readability and SEO 2. Enhance accessibility using ARIA roles, keyboard navigation, and best practices 3. Optimize performance with Core Web Vitals, responsive design, and lazy loading 4. Use modern HTML features like <dialog>, custom elements, and Shadow DOM 5. Build inclusive, future-ready websites aligned with accessibility and SEO standards This course is ideal for those who: - Want to build accessible, inclusive websites using modern web standards - Have basic HTML knowledge and want to deepen their skills in semantic and responsive design - Are frontend developers, designers, or marketers focused on SEO, UX, and accessibility - Are preparing for roles in web development or upgrading existing sites to meet modern guidelines This course empowers you to go beyond basic HTML and build websites that are not only functional and beautiful, but also accessible, discoverable, and performance-optimized for every user. Disclaimer: This is an independent educational resource created by Board Infinity for informational and educational purposes only. This course is not affiliated with, endorsed by, sponsored by, or officially associated with any company, organization, or certification body unless explicitly stated. The content provided is based on industry knowledge and best practices but does not constitute official training material for any specific employer or certification program. All company names, trademarks, service marks, and logos referenced are the property of their respective owners and are used solely for educational identification and comparison purposes.

This module lays the foundation for writing meaningful, standards-compliant HTML that not only structures content effectively but also enhances accessibility and search engine visibility. You’ll begin by understanding what makes HTML “semantic” and how it differs from non-semantic markup. Then, you’ll explore how to use document landmarks, headings, and ARIA roles to create a clear, navigable structure for both users and assistive technologies. Finally, the module dives into accessibility fundamentals, covering best practices for ARIA attributes, keyboard navigation, and common testing tools—empowering you to build inclusive websites from the ground up.

What's included

11 videos4 readings4 assignments1 discussion prompt1 plugin

11 videosTotal 44 minutes
  • Course Introduction1 minute
  • Module Introduction1 minute
  • Introduction to Semantic HTML5 minutes
  • Semantic vs Non-Semantic Markup4 minutes
  • Semantic HTML Evolution & SEO Impact4 minutes
  • Core Semantic Elements Explained7 minutes
  • Document Structure & Headings7 minutes
  • ARIA Landmarks & Common Pitfalls6 minutes
  • Why Accessibility Matters3 minutes
  • ARIA Roles, Properties, and States5 minutes
  • Keyboard Navigation & Accessibility Testing3 minutes
4 readingsTotal 100 minutes
  • Course Syllabus10 minutes
  • Read More About Introduction to Semantic HTML30 minutes
  • Read More About Document Landmarks & Headings30 minutes
  • Read More About Accessibility Essentials & ARIA Best Practices30 minutes
4 assignmentsTotal 105 minutes
  • Practice Quiz : Introduction to Semantic HTML15 minutes
  • Practice Quiz - Document Landmarks & Headings15 minutes
  • Practice Quiz - Accessibility Essentials & ARIA Best Practices15 minutes
  • Graded Quiz - Semantic HTML & Accessibility60 minutes
1 discussion promptTotal 10 minutes
  • Meet & Greet10 minutes
1 pluginTotal 5 minutes
  • Quick Course Check-In5 minutes

This module focuses on how semantic HTML contributes to faster, more stable, and responsive web experiences. You'll explore Core Web Vitals—LCP, CLS, and INP—and understand their impact on real-world performance. Through practical techniques like image optimization, lazy loading, and responsive markup, you’ll learn to deliver lightweight and visually stable pages across devices. The module also covers modern native HTML features such as <dialog>, accessible popovers, and form enhancements to improve interactivity without relying heavily on JavaScript frameworks. By the end of this module, you'll be equipped to build efficient, user-friendly, and inclusive web interfaces.

What's included

10 videos3 readings4 assignments

10 videosTotal 51 minutes
  • Module Introduction1 minute
  • Understanding Largest Contentful Paint (LCP)4 minutes
  • Minimizing Layout Shifts (CLS) for Visual Stability4 minutes
  • Interaction to Next Paint (INP) and Responsiveness6 minutes
  • Best Practices for Image Optimization and Responsive Images4 minutes
  • Implementing Lazy Loading with Native HTML Features3 minutes
  • Responsive HTML Markup for Mobile and Desktop8 minutes
  • Using Native <dialog> Elements for Modals3 minutes
  • Building Accessible Popovers and Tooltips3 minutes
  • Modern Form Features and Validation Patterns14 minutes
3 readingsTotal 90 minutes
  • Read More About Core Web Vitals Deep Dive30 minutes
  • Read More About - Optimizing Images, Lazy Loading & Responsive Markup30 minutes
  • Read More About Interactive & Responsive HTML Features30 minutes
4 assignmentsTotal 105 minutes
  • Practice Quiz - Core Web Vitals Deep Dive — LCP, CLS, INP Explained15 minutes
  • Practice Quiz - Optimizing Images, Lazy Loading & Responsive Markup15 minutes
  • Practice Quiz - Interactive & Responsive HTML Features15 minutes
  • Graded Quiz - Core Web Vitals Deep Dive60 minutes

In this module, you’ll explore how semantic HTML integrates with modern web technologies to create scalable, maintainable, and globally accessible websites. You’ll begin with the fundamentals of Progressive Web Apps (PWAs), learning how to configure web app manifests and implement service workers for offline support. Then, you’ll dive into Web Components and Shadow DOM to build reusable, encapsulated HTML elements. Finally, the module covers SEO optimization using structured data and strategies for internationalizing your content for global audiences. These modern enhancements will help you future-proof your websites while maintaining accessibility and semantic integrity.

What's included

11 videos3 readings4 assignments

11 videosTotal 42 minutes
  • Module Introduction1 minute
  • What Are Progressive Web Apps and Why Use Them?3 minutes
  • Creating and Configuring the Web App Manifest3 minutes
  • Service Workers Overview and Caching Strategies3 minutes
  • Custom Elements — Creating Reusable HTML Tags9 minutes
  • Shadow DOM — Encapsulation and Styling Isolation3 minutes
  • HTML Templates and Declarative Shadow DOM6 minutes
  • Implementing Structured Data with JSON-LD3 minutes
  • SEO Best Practices for Semantic Markup4 minutes
  • Internationalization (I18n) and Localization (L10n) in HTML5 minutes
  • Course Closure1 minute
3 readingsTotal 70 minutes
  • Read More About Introduction to Progressive Web Apps (PWAs)30 minutes
  • Read More About Introduction to Web Components & Shadow DOM30 minutes
  • Read More About SEO & Internationalization10 minutes
4 assignmentsTotal 105 minutes
  • Practice Quiz - Introduction to Progressive Web Apps (PWAs)15 minutes
  • Practice Quiz - Introduction to Web Components & Shadow DOM15 minutes
  • Practice Quiz - SEO & Internationalization15 minutes
  • Graded Assignment - Modern Web Enhancements60 minutes

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Instructor

Board Infinity
264 Courses434,320 learners

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Frequently asked questions

Basic knowledge of HTML is helpful, but you don’t need to be an expert. The course walks you step by step through semantic tags, accessibility, and modern web concepts.

You’ll work with HTML5, ARIA roles, Core Web Vitals, native HTML elements like <dialog>, Web Components, PWAs, and structured data using JSON-LD.

The course takes approximately 13–17 hours. You can complete it at your own pace, typically in 3–4 weeks with 4–5 hours per week.

Yes! You’ll apply what you learn to build an accessible, performance-optimized web page using modern semantic HTML techniques.

Yes, especially for those with basic HTML knowledge. We explain each concept clearly and provide examples, best practices, and testing tips.

You’ll be able to create accessible websites, optimize performance using Core Web Vitals, and apply semantic HTML for better SEO and UX.

This course focuses solely on HTML and accessibility. While you’ll briefly encounter related HTML-native UI features, CSS

Yes, once you complete all the modules and the readings along with the assessments, you’ll be eligible to receive a Coursera certificate of completion. Please note that the certificate is available only if you're enrolled in the paid track.

Absolutely. Designers will benefit from learning how to structure pages for accessibility, SEO, and responsive behavior—all critical to UX design.

To access the course materials, assignments and to earn a Certificate, you will need to purchase the Certificate experience when you enroll in a course. You can try a Free Trial instead, or apply for Financial Aid. The course may offer 'Full Course, No Certificate' instead. This option lets you see all course materials, submit required assessments, and get a final grade. This also means that you will not be able to purchase a Certificate experience.

When you enroll in the course, you get access to all of the courses in the Specialization, and you earn a certificate when you complete the work. Your electronic Certificate will be added to your Accomplishments page - from there, you can print your Certificate or add it to your LinkedIn profile.

Yes. In select learning programs, you can apply for financial aid or a scholarship if you can’t afford the enrollment fee. If fin aid or scholarship is available for your learning program selection, you’ll find a link to apply on the description page.

Financial aid available,