HTML Interview Questions [Most Frequently Asked]


HTML, alongside JavaScript and CSS, forms the foundation of the web. Every website and web app that you see over the internet is powered by CSS, HTML, and JavaScript. Also, each of them has its distinctive role to play in web development.

HTML is responsible for defining the basic structure of a website or web app. CSS adds style to it and JavaScript equips the same with additional functionality. Therefore, if you are to appear in a web development interview, HTML questions are what you should expect coming your way.

HTML Interview Questions

Below is a list of the most frequently asked HTML interview questions as well as HTML5 interview questions. To make the list legible, we have divided it into three parts, namely basic HTML interview questions, intermediate HTML interview questions, and advanced HTML interview questions.

Basic-level HTML Interview Questions

Q. 1. What is HTML?

A: The shorthand for HyperText Markup Language is HTML. It is the leading markup language for designing web pages. In other words, it’s a text formatting language for building and displaying web pages. HTML adds life and interest to the text. It can create pictures, tables, and hyperlinks from the text.

Q. 2. What are tags in HTML and how can they be used?

A: An HTML tag is made up of three parts:

  1. An opening tag,
  2. A content tag, and
  3. A closing tag.

There are two types of material in HTML documents: text and tags. An HTML document is scanned from left to right and top to bottom by a web browser. To generate HTML documents and render their features, HTML tags are employed. Each HTML tag has a specific set of features.

Q. 3. Are HTML tags and elements interchangeable?

A: No, they aren’t. HTML elements are defined by the opening and closing tags, which may or may not contain content. Although h1>Heading 1/h1> is an HTML element, only h1> and /h1> are starting and closing tags.

Q. 4. In HTML, what are attributes?

A: To define the features of an element, attributes are used in conjunction with HTML tags. For instance:

p align="center">p align="center">p align="center">p align="center">p /p>Interview questions/p>

In this case, the ‘align’ attribute is used to align the paragraph so that it appears in the center of the display.

Q. 5. In HTML, what are void elements?

A: Void elements are HTML elements that don’t have closing tags or don’t need to be closed. br />, img />, and hr /> are some notable examples of void elements in HTML.

Q. 6. Is there an end tag for every HTML tag?

A: There isn’t any. Some HTML tags don’t require a closing tag. For instance, <image> and <br> tags.

Q. 7. What is HTML formatting?

A: HTML formatting is a method of presenting text in a more appealing manner. It makes text bold, italicized, and underlined by using various tags.

Intermediate-level HTML Interview Questions

Q. 8. How does collapsing white space benefit you?

A: A blank sequence of whitespace characters in HTML is interpreted as a single space character. This is because the browser collapses several spaces into a single space character. This allows a developer to indent lines of text without worrying about many spaces while keeping HTML codes readable and understandable.

Q. 9. What are the benefits of HTML comments?

A: Similar to programming languages, in an HTML document, comments are used to provide essential notes and to assist developers in mentioning any changes that will be made later.

When the code is run, they are not visible in the browser. Between the ‘—’ symbol at the beginning and end of the angular brackets, a comment is always written.

Q. 10. What are HTML forms?

A: HTML forms facilitate data collection. When forms are filled out, the user information is collected, and details are provided for saving in the database.

Q. 11. What is HTML5 and how does it work?

A: The World Wide Web Consortium launched HTML5 in 2014, which is an upgraded version of HTML. It has established the following new traits for professionals to learn:

  • DOCTYPE declaration: To inform the web browser about the markup language, define the HTML document type.
  • Main: The main tag identifies the key section of a document that is relevant to the tag’s central content.
  • Header: The header tag specifies a document’s or a section’s title or heading.
  • Footer: The footer tag designates the section of a document that carries copyright or author information. It is identified by a tag.
  • Article: The article tag denotes a self-contained or autonomous portion of the content of a document with the tag. It is provided with the tag and is used to specify certain portions in a document, such as a chapter, header, footer, or any other component.

Q. 12. In HTML, what is the ‘class’ attribute?

A: The class property is used to specify an HTML element’s class name. An HTML element’s class value can be the same for several elements. It is also mostly used to link the styles defined in the stylesheet to HTML elements.

Q. 13. What is the difference between the ‘id’ attribute of HTML elements and the ‘class’ attribute?

A: The class attribute of one element can be shared by multiple HTML elements. However, the id attribute of one element cannot be shared by another HTML element.

Q. 14. What is the definition of multipart form data?

A: One of the enctype attribute’s values is multipart form data. It’s used to send data from a file to a server so that it can be processed. Text/plain and application/x-www-form-urlencoded are the two allowed values for the enctype attribute.

Advanced-level HTML Interview Questions

Q. 15. What is the relationship between HTML and CSS?

A: To create webpages, HTML and CSS work together. Most web pages’ structural code is HTML. HTML is responsible for the layout of a webpage as well as the many headers, footers, text, and graphics that you see when viewing it.

CSS (Cascading Style Sheets) is a style sheet language that is applied on top of HTML and allows you to change the appearance of the HTML structure. It’s crucial to note that because of the split, you won’t be able to see the changes in the CSS when editing the HTML, but you will be able to see them if you view the page in a separate browser.

Q. 16. What is an HTML ‘Marquee’ tag?

A: A Marquee tag can be used to display scrolling text. A picture or text can be scrolled up, down, left, or right using this tag.

Q. 17. What are the advantages and disadvantages of using the details and summary tags?

A: The details tag is used to add some extra information to a web page. On demand, it can be viewed or hidden. The summary tag is used in conjunction with the details tag.

Q. 18. What is the datalist tag?

A: On the form element, the HTML5 datalist tag provides an autocomplete capability. It allows users to choose from a list of predefined options when selecting data.

Q. 19. What is Semantic HTML, and how does it work?

A: Semantic HTML is a type of coding in which the tags express the text’s meaning. HTML employs semantics to emphasize the content’s meaning or intent.


So, these were the HTML interview questions that will help increase your chances of qualifying for a web developer role, but the final outcome will be determined by your level of preparation and clarity of concepts.

Now you might have a good understanding of the types of questions that might be asked during an interview. We hope that these HTML interview questions will assist you in receiving good news! Best wishes!

The list is still small but we will be updating it for more HTML interview questions soon. So, keep revisiting the blog post for updates. In the meanwhile, don’t hesitate to share your HTML interview experience in the comments section below.

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