HTML-First Tutorial
What Is HTML-First?
HTML-First is a way of building websites where HTML is the foundation of the page.
A page should be readable, usable, and accessible with Basic HTML and CSS.
This approach is closely related to Progressive Enhancement.
Example
<!DOCTYPE html>
<html>
<body>
<h1>HTML First</h1>
<article>
<h2>Welcome</h2>
<p>This page works without JavaScript.</p>
</article>
</body>
</html>
Try it Yourself »
Instead of starting with JavaScript frameworks and complex client-side applications, HTML-first development starts with clean and meaningful HTML.
The content and structure of a web page should work before JavaScript is added.
Avoid Unnecessary JavaScript
JavaScript is powerful, but too much JavaScript can make websites slower and more complicated.
Many websites can be built with more HTML, CSS, and less JavaScript.
HTML-first development can help improve:
- Page speed
- Accessibility
- Search engine visibility
- Maintainability
- Reliability
Progressive Enhancement
Progressive enhancement means starting with a working basic page.
Extra features are added only when the browser supports them.
For example, an HTML form should still work even if JavaScript fails.
Example
<form action="Action Page" method="post">
<label for="email">Email:</label>
<input type="email" id="email" name="email" required>
<button type="submit">Subscribe</button>
</form>
Try it Yourself »
The form above uses built-in HTML validation and does not require JavaScript.
Why HTML-First?
HTML-first development is not about rejecting JavaScript.
It is about using the browser's built-in features before adding extra complexity.
Many common website features can be created with HTML and CSS alone.
Browsers Are Already Powerful
Modern browsers understand many useful HTML elements.
These elements can provide structure, behavior, validation, and accessibility.
Examples include <form>, <button>, <details>, <summary>, and <dialog>.
Example
<details>
<summary>Click to read more</summary>
<p>This text can be opened and closed without JavaScript.</p>
</details>
Try it Yourself »
Less JavaScript Can Mean Faster Pages
JavaScript must be downloaded, parsed, compiled, and executed by the browser.
Large JavaScript files can slow down the first load of a page.
This is especially noticeable on mobile phones and slow networks.
Smaller pages load faster, use less memory, and feel more responsive.
HTML Works Before JavaScript Loads
HTML is displayed as soon as the browser receives it.
This means users can often start reading the page before scripts have finished loading.
For tutorials, articles, product pages, documentation, and forms, this is often enough.
Semantic HTML Improves Accessibility
Semantic HTML uses elements for their correct meaning.
This helps screen readers, search engines, keyboard users, and other tools understand the page.
When JavaScript Is Still Useful
JavaScript is still important for many interactive features.
The HTML-first idea is to add JavaScript when it is needed, not before.
HTML-first does not mean JavaScript never. It means HTML before JavaScript.
