Advanced HTML Tags & New HTML Tags You Should Know in 2025

Introduction

Many developers are familiar with basic HTML tags like <div>, <p>, and <img>.
However, advanced HTML tags can improve accessibility, SEO, and performance.
This article covers advanced tags and new HTML5 tags that every developer should know.

1. Advanced HTML Tags You Should Use

1.1 <details> and <summary> (Collapsible Content)

• Used to create expandable sections.
• Great for FAQs, accordions, and extra information.

<details>
  <summary>Click to see more details</summary>
  <p>This is additional content that is hidden by default.</p>
</details>

1.2 <dialog> (Native Modals & Popups)

• Creates a built-in modal popup without JavaScript.

<dialog id="myDialog">
  <p>This is a popup!</p>
  <button onclick="document.getElementById('myDialog').close()">Close</button>
</dialog>
<button onclick="document.getElementById('myDialog').showModal()">Open Dialog</button>

1.3 <progress> and <meter> (Displaying Progress & Measurements)

• <progress>: Shows progress (e.g., file upload status).
• <meter>: Represents a range or measurement.

<progress value="70" max="100"></progress>
<meter min="0" max="10" value="7"></meter>

1.4 <picture> (Responsive Images with Multiple Sources)

• Loads different images based on screen size or format support.

<picture>
  <source srcset="image.webp" type="image/webp">
  <source srcset="image.jpg" type="image/jpeg">
  <img src="fallback.jpg" alt="Responsive Image">
</picture>

1.5 <template> (Hidden HTML for Dynamic Content)

• Used for cloning elements dynamically with JavaScript.

<template id="cardTemplate">
  <div class="card">
    <h3></h3>
    <p></p>
  </div>
</template>

2. New & Modern HTML Tags from HTML5

2.1 <article>, <section>, and <aside> (Semantic Layout)

• Improves SEO and accessibility.

<article>
  <h2>Blog Title</h2>
  <p>Content goes here...</p>
</article>
<aside>Related Links</aside>

2.2 <main>, <header>, <footer>, and <nav> (Structural Elements)

• Enhances document readability and structure.

<header>
  <h1>Website Title</h1>
  <nav>
    <a href="#">Home</a>
    <a href="#">About</a>
  </nav>
</header>

2.3 <time> (Date & Time Formatting)

• Used to specify dates and times.

<p>Published on <time datetime="2025-03-10">March 10, 2025</time></p>

2.4 <mark> (Highlight Important Text)

<p>Don't forget to <mark>submit your assignment</mark> by tomorrow!</p>

2.5 <wbr> (Word Break Opportunity)

• Helps break long words properly.

<p>Visit our website: www.example<wbr>.com</p>

3. Accessibility & Performance Enhancements with HTML

3.1 <abbr> (Abbreviations with Tooltips)

<abbr title="HyperText Markup Language">HTML</abbr> is a markup language.

3.2 <bdi> (Bidirectional Text for Multilingual Sites)

<p>Username: <bdi>علي</bdi></p>

3.3 <datalist> (Enhanced Input Fields with Suggestions)

<input list="browsers" name="browser">
<datalist id="browsers">
  <option value="Chrome">
  <option value="Firefox">
</datalist>

4. Best Practices & When to Use These Tags

• Use semantic HTML for SEO and accessibility.

• Prefer <dialog> over custom JavaScript popups for better performance.

• Optimize <picture> to load images efficiently.

• Combine <details> and <summary> for user-friendly FAQs.

Conclusion

Advanced and new HTML tags improve user experience, SEO, and accessibility.
Try these tags in your next project to enhance performance.
What are your favorite HTML5 tags? Share in the comments!