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If you are preparing for your first web development interview, then HTML is the very first thing you should focus on. When I was learning HTML during my B.Tech days, I felt everything was easy at first. But when I started facing interview questions, I got confused and nervous 😅.
Slowly, I understood one thing—HTML is actually very simple if your basics are clear. You don’t need to remember tough things. You just need to understand how HTML works.
In this blog, I am sharing the Top 20 HTML Interview Questions and Answers for 2026. These questions are specially selected for beginners. I have explained every answer in very easy words, with small examples so that you can understand quickly and feel confident.
Let’s start learning step by step. 🚀
What is HTML?
HTML (HyperText Markup Language) is the standard markup language used to create and structure content on the web. It defines the structure of web pages using elements/tags such as headings, paragraphs, links, images, tables, and forms. Browsers read HTML files and render them as web pages.
Key points:
- Full form: HyperText Markup Language
- Used to structure web content.
- Consists of tags like <h1>, <p>, <a>, <img>.
- Forms the skeleton of web pages.
What are HTML tags?
HTML tags are keywords enclosed in angle brackets < > used to define elements in an HTML document and tell the browser how to display content.
Types of Tags:
- Paired Tags: Have opening and closing tags
Example: <p>Paragraph</p>
- Self-Closing Tags: Do not need a closing tag
Example: <img />, <br />
What is the difference between HTML and HTML5?
Difference Between HTML and HTML5 are :
Doctype Declaration:
- HTML uses a long doctype like <!DOCTYPE HTML PUBLIC ...>.
- HTML5 uses the simple <!DOCTYPE html>.
Multimedia Support:
- HTML requires plugins for audio and video.
- HTML5 supports audio and video natively with <audio> and <video> tags.
Semantic Elements:
- HTML has limited semantic tags like <div> and <span>.
- HTML5 introduces new semantic tags like <header>, <footer>, <article>, and <section> for better structure.
Forms and Input Types:
- HTML has basic form controls.
- HTML5 provides new input types such as email, date, number, etc., for better validation.
APIs and Features:
- HTML does not provide modern APIs.
- HTML5 includes APIs like Canvas, Geolocation, Web Storage, and Drag & Drop for interactive web applications.
Conclusion:
HTML5 is a modern, enhanced version of HTML
that makes web development easier, richer, and more interactive.
What are attributes in HTML?
Attributes are additional information provided inside an HTML tag to modify or define the behavior of an element. They give more details about how the element should appear or function.
Key Points:
- Placed inside the opening tag of an element.
- Usually come in name="value" format.
- Can control appearance, behavior, or functionality of elements.
Examples:
<a href="https://www.example.com">Link</a> → href is an attribute specifying the URL.
<img src="image.jpg" alt="My Image" width="300"> → src, alt, width are attributes.
What is a hyperlink?
A hyperlink is a clickable link on a web page that navigates the user to another web page, file, or resource when clicked.
Key Points:
- Created using the <a> (anchor) tag.
- The href attribute specifies the destination URL.
- Can link to internal pages, external websites, files, or sections within the same page.
Example:
<a href="https://www.example.com">Visit Example</a>
What is the use of the img tag?
The <img> tag is used to embed images on a web page. It allows web pages to display pictures, logos, icons, or any graphical content.
Key Points:
- Self-closing tag: Does not have a closing tag (<img />).
- Main Attribute – src: Specifies the path or URL of the image.
Other Important Attributes:
- alt: Provides alternate text if the image cannot be displayed.
- width & height: Set the size of the image.
- title: Displays tooltip text when hovered.
Supports various image formats like JPEG, PNG, GIF, SVG, etc.
Helps make web pages visually appealing and informative.
Example:
<img src="logo.png" alt="Company Logo" width="200" height="100">
What are lists in HTML?
Lists in HTML are used to group related items together in an ordered or unordered manner. They help in organizing content clearly on a web page.
Types of Lists:
Ordered List (<ol>):
- Displays items in a numbered sequence.
- Each item is added using the <li> (list item) tag.
Example:
<ol>
<li>HTML</li>
<li>CSS</li>
<li>JavaScript</li>
</ol>
Unordered List (<ul>):
- Displays items with bullets instead of numbers.
- Uses <li> for each item.
Example:
<ul>
<li>HTML</li>
<li>CSS</li>
<li>JavaScript</li>
</ul>
Description List (<dl>):
- Used for term-definition pairs.
- <dt> defines the term, <dd> defines its description.
Example:
<dl>
<dt>HTML</dt>
<dd>HyperText Markup Language</dd>
<dt>CSS</dt>
<dd>Cascading Style Sheets</dd>
</dl>
What is the difference between block and inline elements?
Difference Between Block and Inline Elements
Layout:
- Block elements start on a new line.
- Inline elements stay on the same line.
Width & Height:
- Block elements can have width and height set.
- Inline elements cannot have width and height set.
Examples:
- Block: <div>, <p>, <h1>
- Inline: <span>, <a>, <strong>
Purpose:
- Block elements are used for structuring sections of a page.
- Inline elements are used for formatting small parts of content within blocks.
Flow:
- Block elements occupy the full width available.
- Inline elements occupy only the space of their content.
What is the div tag?
<div> Tag in HTML
- The <div> tag is used to group HTML elements together.
- It is a block-level container, which means it starts on a new line and takes full width.
- It helps to organize content on a webpage.
Example:
<div>
<h2>My Heading</h2>
<p>This is a paragraph inside the div.</p>
</div>
Explanation:
- The <div> contains both the heading and the paragraph.
- Everything inside the <div> stays together as one section.
What is the span tag?
<span> Tag in HTML
- The <span> tag is used to group small parts of text or inline elements.
- It is an inline element, which means it does not start on a new line.
- Helps to apply style or formatting to a part of the text.
Example:
<p>This is a <span style="color: red;">red text</span> in a paragraph.</p>
Explanation:
- The <span> only affects the text inside it (“red text”).
- Everything else in the paragraph remains unchanged.
What is semantic HTML?
Semantic HTML
- Semantic HTML uses tags that have a clear meaning for both the browser and the developer.
- These tags describe the purpose of the content inside them.
- Helps to organize content and makes webpages more readable and accessible.
Examples of Semantic Tags:
<header> Header of the page</header>
<nav>Navigation menu</nav>
<article>Main article content</article>
<footer>Footer of the page</footer>
Explanation:
<header> is for the top section,
<nav> for menu,
<article>
for main content,
<footer> for bottom section.
Using semantic tags improves SEO and accessibility.
Why is semantic HTML important?
Importance of Semantic HTML
- Semantic HTML gives meaning to webpage elements, so both developers and browsers know what each part is for.
- It helps search engines understand the page, which improves SEO and makes the website easier to find.
- Semantic tags make websites more accessible, especially for people using screen readers.
- It organizes the webpage structure clearly, making the code easier to read and maintain.
- Overall, semantic HTML improves website usability, readability, and search engine performance.
What is the head tag?
The <head> tag in HTML is used to contain metadata and information about the webpage that is not displayed directly on the page. It typically includes elements like:
- <title> – sets the page title shown in the browser tab.
- <meta> – provides metadata like character set, description, keywords.
- <link> – links to external resources like CSS files.
- <style> – internal CSS for styling.
- <script> – JavaScript code or external scripts.
Example:
<head>
<title>My Webpage</title>
<meta charset="UTF-8"> <link rel="stylesheet" href="style.css">
</head>
It is placed inside the <html> tag and before the <body> tag.
What is the body tag?
- The <body> tag in HTML is used to define the main content of a webpage that is visible to users in the browser. All elements that appear on the webpage are written inside the body tag.
- It can contain elements such as headings, paragraphs, images, links, tables, forms, lists, audio, video, and buttons. The browser displays only the content placed inside the <body> tag.
- The <body> tag is written after the <head> tag and is enclosed within the <html> tag.
Example:
<body>
<h1>Welcome</h1>
<p>This is a webpage.</p>
</body>
What is the use of meta tags?
- Meta tags are used to provide metadata (information about the webpage) to the browser and search engines. They are placed inside the <head> tag and are not displayed on the webpage.
- Meta tags help in SEO (Search Engine Optimization) by describing the page content, keywords, and author information. They also control page behavior, such as character encoding, viewport settings for responsive design, and page refresh.
- Common uses of meta tags include defining character set, page description, keywords, author, and viewport for mobile-friendly layouts.
Example:
<meta charset="UTF-8">
<meta name="description" content="HTML Basics">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
What is the doctype declaration?
- The DOCTYPE declaration (<!DOCTYPE>) is used to define the document type and HTML version being used in a webpage. It helps the browser understand how to render and display the HTML code correctly.
- The DOCTYPE declaration is written at the very top of an HTML document, before the <html> tag. It ensures the browser works in standards mode instead of quirks mode.
- In HTML5, the DOCTYPE declaration is simple and short.
Example:
<!DOCTYPE html>
What is a table in HTML?
- A table in HTML is used to display data in rows and columns in a structured format. It is mainly used to organize and present information such as records, schedules, and reports clearly.
- An HTML table is created using the <table> tag, with <tr> for table rows, <th> for table headings, and <td> for table data (cells).
- Tables help in easy data comparison and improve readability of information.
Example:
<table> <tr> <th>Name</th> <th>Age</th>
</tr> <tr> <td>Ankit</td> <td>22</td>
</tr> </table>
What is the difference between id and class?
The difference between id and class in HTML is as follows:
Uniqueness:
- id is unique and used for only one element in a webpage.
- class can be used for multiple elements.
Usage:
- id is mainly used to identify a single specific element.
- class is used to apply the same style or behavior to multiple elements.
CSS Selector:
- id is selected using # (Ex:#header).
- class is selected using . (Ex: .box).
JavaScript Access:
- id is commonly used for JavaScript DOM manipulation.
- class is mostly used for group styling and scripting.
Reusability:
- id cannot be reused.
- class is reusable across elements.
Example:
<p id="para1">Hello</p> <p class="text">Welcome</p>
<p class="text">Thank you</p>
What is accessibility in HTML?
- Accessibility in HTML refers to the practice of designing and writing HTML code so that web content is usable by everyone, including people with disabilities such as visual, hearing, motor, and cognitive impairments.
- HTML accessibility ensures that screen readers and assistive technologies can correctly interpret and navigate web pages. This is achieved by using semantic HTML elements like <header>, <nav>, <main>, <section>, and <footer>, along with proper use of headings, labels, and alt text.
- Key accessibility features include using alt attributes for images, labels for form inputs, keyboard-friendly navigation, and ARIA attributes when necessary.
- Accessibility improves usability, inclusiveness, and SEO, making websites more user-friendly for all users.
Why is HTML important for web development?
- HTML (HyperText Markup Language) is important for web development because it is the basic building block of every website. It provides the structure and layout of a web page.
- HTML is used to define elements such as headings, paragraphs, images, links, tables, and forms, which make up the content of a webpage. Without HTML, a webpage cannot be displayed in a browser.
- It works together with CSS for styling and JavaScript for interactivity, forming the core technologies of the web.
- HTML also supports accessibility and SEO, helping search engines and assistive technologies understand web content.
If you found this blog helpful, **save it for revision before your interview** 📌. Share it with your friends who are learning HTML. If you want more beginner-friendly interview blogs on HTML, CSS, JavaScript, and React, keep visiting this site and start your preparation today.
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