Most Important HTML Interview Questions

Most Important HTML Interview Questions


For anyone looking to join a web development team, having good knowledge of HTML is essential. In almost all cases, you’ll be asked to take part in an interview where you’re expected to field questions about HTML – in order to demonstrate your abilities. Knowing what questions to expect beforehand can save time and nerves during the highly pressurized interview. In this article, we’ll look at a variety of HTML interview questions, from simple queries on HTML markup to more complex questions on HTML coding standards.

Prepare for Your HTML Interview With These Preemptive Questions

First and foremost, it’s a great idea to review some of the basic HTML interview questions that are fairly common in many interviews. Some of the most basic questions include:

  • What is HTML?
  • What does HTML stand for?
  • What is the purpose of HTML?

It’s also useful to demonstrate your understanding of HTML tags and how they are used to structure HTML documents. Examples of questions in this area include:

  • What are HTML tags?
  • What is the purpose of HTML tags?
  • What is an example of an HTML tag?

What are the Go-To HTML Interview Questions?

When it comes to more specific HTML knowledge, it’s likely that employers will probe your understanding of different HTML elements, how to structure an HTML document and the different types of HTML markups. Examples of go-to HTML interview questions include:

  • What HTML elements can be used to build web pages?
  • How do you structure an HTML document?
  • What is the difference between HTML tags and elements?

What Kind of Questions Might You Expect From an Employer?

During an HTML interview questions, employers may also ask you to demonstrate a more advanced knowledge of HTML including styles, scripting, and valid HTML documents. Questions in this category usually take the form of:

  • How do you incorporate CSS into an HTML page?
  • What are the benefits of using CSS with HTML?
  • What HTML coding standards should be followed when writing code?

What Types of HTML Markup Can be Used to Build Web Pages?

HTML is used to define the structure and content of a web page. The most common type of HTML markup used to do this are HTML tags and elements. HTML tags usually define parts of a web page such as headings, paragraphs, and lists, while elements, on the other hand, represent the content within those tags. Examples of HTML tags and elements include:

  • Tag: <h1>
  • Element: Headline text
  • Tag: <ul>
  • Element: List item

What is HTML5 and How Does It Differ From Other Versions?

HTML5 is the latest version of the HTML language and was created to standardize web development. This latest version of HTML is considered more robust than previous versions as it can accommodate a variety of multimedia elements including audio and video. It also places more emphasis on responsive design, making it easier to create websites across various different devices.

What Does Valid HTML Mean?

Valid HTML refers to code that conforms to the standards laid out in HTML specifications. In order to be valid, code must meet the requirements of different HTML doctypes. Having valid HTML is essential for ensuring maximum web compatibility and minimizing errors when coding.

What is the Difference Between HTML Tags and Elements?

HTML tags are used to define sections of web pages and elements are used to define the content within those sections. Tags are typically enclosed by ‘<’ and ‘>’ symbols and elements are usually expressed as text or other media formats. An example of a tag is the ‘<h1>’ tag which is used to signify a headline, while the element associated with this tag is the headline text.

What is the Most Common Way to Insert an Image Into An HTML Document?

The most common way to insert an image into an HTML document is by using the ‘<img>’ tag. This tag must include a ‘src’ attribute which contains the file path of the image to be used. Other attributes that can be used with this tag are ‘alt’ and ‘width’.

How do You Structure An HTML Document?

An HTML document is typically structured in the form of an HTML tree. This tree consists of a head element (which contains document setup information) and a body element (which contains the content visible to the user). Other elements like the head and footer can also be added to the HTML tree to provide additional information.

How Do You Use CSS to Style HTML Pages?

Cascading Style Sheets (CSS) are used to define the look and feel of an HTML page. CSS can be used to add color, structure, typefaces, and other visual elements to a web page, in order to make it more visually appealing. CSS elements are typically added to an HTML file at the start of the document, before the HTML tree.

What are the Benefits of CSS?

The primary benefit of using CSS is that it makes web design more efficient and saves time. By incorporating CSS into HTML, web designers can keep the style of a web page separate from the structure of the page, making it easier to maintain and update. In addition, using CSS can also reduce the file size of the web page, in turn speeding up web page loading times.

How Do You Link to Other Websites or Pages With HTML?

To link to an external website or page within an HTML document, the ‘<a>’ element can be used. This element should contain an ‘href’ attribute which contains a link to the destination page or website. Links can also be added to images by wrapping the ‘<img>’ element in an ‘<a>’ element.

What Coding Standards Should Be Followed When Coding in HTML?

When coding in HTML, it is important to adhere to certain coding standards and practices. This involves writing valid HTML code that conforms to HTML specifications, formatting HTML code using indentations, and using meaningful ID and class names for elements. In addition to this, it is also important to keep code as concise as possible to ensure efficient loading times.

What is an HTML Doctype and What Are Its Responsibilities?

An HTML doctype is a notation that informs a web browser that the code found within a document is written in HTML language. It must be declared at the start of an HTML document and tells the browser which HTML version the document is written in, as well as what HTML elements can be used.

What are the Different Types of HTML Form Elements?

Form elements are used in HTML to allow users to collect or submit data. Common examples of form elements include checkboxes, radio buttons, dropdowns, and fields for entering text. These elements can be added to an HTML document using the ‘<form>’ tag and should always contain an ‘action’ attribute to define the page that the form should send data.

What is the Purpose of HTML5 Canvas?

An HTML5 canvas is used to render graphics on a web page. It is typically used for creating interactive graphics, visualizations, and games. It can also be used for manipulating images, videos, and animations within an HTML page.

How Do You Incorporate Animations Into An HTML Page?

Animations can be added to an HTML page by using the HTML5 canvas element. The canvas element can be used to render graphics in a variety of formats such as SVG, WebGL, and Canvas 2D. It is also possible to incorporate HTML5 audio and video elements in a canvas, in order to create interactive animations.

How do You Make a Textbox Change Color With HTML?

To change the color of a textbox in HTML, the ‘style’ attribute should be used. This attribute contains a ‘color’ value which should be set to the chosen color. This attribute should be added to the ‘<input type=”text”>’ element in order to change the color of the textbox.

What is the Purpose of HTML Entities?

HTML entities are special characters that can be added to an HTML document to create visual effects. These entities are typically used to add symbols or punctuation marks that don’t appear on a standard keyboard. An example of an HTML entity is the ‘&amp;’ entity which is used to display the ‘&’ symbol.

How Do You Validate HTML for Browser Compatibility?

HTML validation is the process of checking HTML code against HTML specifications in order to ensure maximum browser compatibility. This process involves using an HTML validator tool that will review HTML documents and look for errors or unsupported code. Having valid HTML code is essential for cross-browser compatibility and ensuring maximum usability.


HTML is one of the foundations of web development and without a working knowledge of the language, securing a job in the industry is almost impossible. Preparing for an HTML interview Questions is essential, and it’s important to review a variety of HTML interview questions beforehand. This article has explored a variety of HTML-related questions, from basic queries on HTML tags to more complex questions on HTML coding standards. Knowing what questions to expect can provide a sense of security and help you to achieve success in your web development interview.

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