HTML Complete Guide – A to Z HTML Concepts Last Updated : 27 Jul, 2025 Comments Improve Suggest changes Like Article Like Report What is HTML ? HTML stands for Hypertext Markup Language. It is a standard markup language used to design the documents displayed in the browsers as a web page. This language is used to annotate (make notes for the computer) text so that a machine can understand it and manipulate text accordingly. Most markup languages (e.g. HTML) are human-readable. HTML Complete Guide What is HTML Complete Guide ? HTML Complete Guide is a list of A to Z HTML concepts from beginner to advanced level. Table of Contents HTML Basics HTML Tags HTML Attributes HTML DOM HTML Audio & Video HTML Graphics HTML APIs HTML5 HTML 5 MathML HTML Course HTML Questions HTML Interview Questions HTML Practice Quiz Sets HTML Basics HTML Introduction HTML full form HTML Editors HTML Basics HTML Comments HTML Elements HTML Heading HTML Paragraphs HTML Quotations HTML Text Formatting HTML Layout HTML Links HTML Images HTML Tables HTML Lists HTML Forms HTML Block and Inline Elements HTML Iframes HTML File Paths HTML Color Styles and HSL HTML Viewport meta tag for Responsive Web Design HTML Computer Code Elements HTML Entities HTML Charsets HTML URL Encoding HTML Deprecated Tags HTML Tags HTML <!DOCTYPE HTML> Tag HTML <html> Tag HTML <head> Tag HTML <style> Tag HTML <title> Tag HTML <base> Tag HTML <noscript> Tag HTML <script> Tag HTML <meta> Tag HTML <body> Tag HTML <a> Tag HTML abbr Tag HTML acronym Tag HTML <address> Tag HTML applet Tag HTML <area> Tag HTML5 <article> Tag HTML5 <aside> Tag HTML5 <audio> Tag HTML <b> Tag HTML <base> Tag HTML <basefont> Tag HTML Tags – A to Z List HTML Attributes HTML Attributes HTML <input> accept Attribute HTML <form> accept-charset Attribute HTML accesskey Attribute HTML action Attribute HTML align Attribute HTML alt attribute HTML <script> async Attribute HTML input autocomplete Attribute HTML <form> autocomplete Attribute HTML autofocus Attribute HTML input autofocus Attribute HTML <button> autofocus Attribute HTML <textarea> autofocus Attribute HTML Global Attributes HTML Attributes Complete Reference HTML DOM DOM (Document Object Model) HTML DOM activeElement Property HTML DOM anchors Collection HTML DOM close() Method HTML DOM baseURI Property HTML DOM body Property HTML DOM createAttribute() Method HTML DOM doctype Property HTML DOM writeln() Method HTML DOM console error() Method HTML DOM URL Property HTML DOM embeds Collection HTML DOM console warn() Method HTML DOM console trace() Method HTML DOM Complete Reference HTML Audio & Video HTML DOM Audio Object HTML DOM Video Object HTML DOM Video canPlayType( ) Method HTML DOM Audio audioTracks Property HTML DOM Audio autoplay Property HTML DOM Audio buffered Property HTML DOM Audio controls Property HTML DOM Audio currentSrc Property HTML DOM Audio currentTime Property HTML DOM Audio defaultMuted Property HTML DOM Audio defaultPlaybackRate Property HTML DOM Audio duration Property HTML DOM Audio ended Property HTML DOM Audio loop Property HTML DOM Audio/Video Complete Reference HTML Graphics HTML SVG-Basics SVG Element Complete Reference SVG Property Complete Reference SVG Attribute Complete Reference HTML Canvas Basics HTML Canvas Complete Reference HTML APIs HTML Geolocation HTML Drag and Drop target="_blank"LocalStorage and SessionStorage Web Storage APIs Explain Web Worker in HTML What are Server-Sent Events in HTML5? What is the Vibration API in HTML5? HTML5 HTML5 Introduction Are HTML5 tags case sensitive ? HTML5 – New Tags Where to use <br>, <br/> and <br /> ? What are the media element tags introduced by HTML5? What are the HTML tags that deprecated in HTML5? What are <progress> and <meter> tags in HTML5? Explain the use of figure tag in HTML5 HTML itemid Attribute What are custom attributes in HTML5? How to define an HTML heading in HTML5? How to add controls to an audio in HTML5? How to preload an audio in HTML5? How to specify the URL of the media file in HTML5? HTML Spell Check What is the Application Cache and why it is used in HTML5? What are the different types of storage in HTML5? HTML5 Complete Reference HTML 5 MathML HTML5 MathML Introduction HTML5 MathML Tags HTML5 MathML <maction> tag HTML5 MathML <math> tag HTML5 MathML <menclose> Tag HTML5 MathML <merror> Tag HTML5 MathML <mfenched> tag HTML5 MathML <mfrac> tag HTML5 MathML <mglyph> Tag HTML5 MathML <mi> Tag HTML5 MathML <mlabeledtr> tag HTML5 MathML <mmultiscripts> Tag HTML5 MathML <mn> Tag HTML5 MathML <mo> Tag HTML5 MathML <mover> Tag HTML5 MathML <mpadded> Tag HTML5 MathML Complete Reference HTML5 MathML Attributes HTML5 MathML close Attribute HTML5 MathML mathbackground Attribute HTML5 MathML height Attribute HTML5 MathML id Attribute HTML5 MathML largeop Attribute HTML5 MathML frame Attribute HTML5 MathML mathsize Attribute HTML5 MathML align Attribute HTML5 MathML actiontype Attribute HTML5 MathML movablelimits Attribute HTML5 MathML open Attribute HTML5 MathML rowalign Attribute HTML5 MathML separator Attribute HTML5 MathML scriptsizemultiplier Attribute HTML5 MathML selection Attribute HTML5 MathML voffset Attribute HTML5 MathML accent Attribute HTML5 MathML Attribute Complete Reference HTML Course Introduction to HTML CSS | Learn to Design your First Website in Just 1 Week HTML Course | Structure of an HTML Document HTML Course First Web Page Printing Hello World HTML Course Basics of HTML HTML Course : Starting the Project – Creating Directories HTML Course Understanding and Building Project Structure HTML Course : Creating Navigation Menu HTML Course : Building Header of the Website HTML Course : Building Main Content – Section 1 HTML Course | Building Main Content – Section 2 HTML course | Building Main Content – Section 3 HTML Course | Building Footer HTML Course | Practice Quiz 1 HTML Course | Practice Quiz 2 HTML Questions How to Create a Tab Image Gallery? How to create a Hero Image using HTML and CSS? How to Create an Image Overlay Icon using HTML and CSS? How to add a Login Form to an Image using HTML and CSS? How to Create Image Accordion using HTML and CSS? How to set background image in HTML? How to specify a label for an optgroup tag in HTML5? What are physical tags in HTML? How to specify that an option-group should be disabled in HTML5? How to define a visible heading for details element in HTML5? How to hide border and background on empty cells in a table using CSS? Create a Sticky Social Media Bar using HTML and CSS Create a Search Bar using HTML and CSS How to create Right Aligned Menu Links using HTML and CSS? How to Create Section Counter using HTML and CSS? Create Indian Flag using HTML and CSS How to get the rendered height of an element? Design a Rotating card effect using HTML and CSS Responsive Card with hover effect using HTML and CSS How to create Responsive Profile Card using HTML and CSS? How to design Meet the Team Page using HTML and CSS? How to Create Browsers Window using HTML and CSS? How to Create Breadcrumbs using HTML and CSS? How to Create Section Counter using HTML and CSS? How to Create Toggle Switch by using HTML and CSS? How to Create a Cutout Text using HTML and CSS? How to make a Pagination using HTML and CSS? Simple Portfolio Website Design using HTML HTML Interview Questions HTML Interview Questions and Answers (2023) – Beginner Level HTML Interview Questions and Answers Set (2023) – Intermediate Level HTML Interview Questions and Answers Set (2023) – Advanced Level HTML Practice Quiz Sets Practice Quiz 1 Practice Quiz 2 Comment More infoAdvertise with us Anonymous Improve Article Tags : HTML A-Z Guides Similar Reads HTML Tutorial HTML stands for HyperText Markup Language. It is the standard language used to create and structure content on the web. It tells the web browser how to display text, links, images, and other forms of multimedia on a webpage. HTML sets up the basic structure of a website, and then CSS and JavaScript 11 min read BasicsHTML IntroductionHTML stands for Hyper Text Markup Language, which is the core language used to structure content on the web. It organizes text, images, links, and media using tags and elements that browsers can interpret. As of 2025, over 95% of websites rely on HTML alongside CSS and JavaScript, making it a fundam 6 min read HTML EditorsAn HTML Editor is a software application designed to help users create and modify HTML code. It often includes features like syntax highlighting, tag completion, and error detection, which facilitate the coding process. There are two main types of HTML editors: Text-Based Editors - Allow direct codi 5 min read HTML BasicsHTML (HyperText Markup Language) is the standard markup language used to create and structure web pages. It defines the layout of a webpage using elements and tags, allowing for the display of text, images, links, and multimedia content. As the foundation of nearly all websites, HTML is used in over 7 min read HTML Structure & ElementsHTML ElementsAn HTML Element consists of a start tag, content, and an end tag, which together define the element's structure and functionality. Elements are the basic building blocks of a webpage and can represent different types of content, such as text, links, images, or headings.For example, the <p> ele 5 min read HTML AttributesHTML Attributes are special words used within the opening tag of an HTML element. They provide additional information about HTML elements. HTML attributes are used to configure and adjust the element's behavior, appearance, or functionality in a variety of ways. Each attribute has a name and a value 8 min read HTML HeadingsHTML headings are used to define the titles and subtitles of sections on a webpage. They help organize the content and create a structure that is easy to navigate.Proper use of headings enhances readability by organizing content into clear sections.Search engines utilize headings to understand page 4 min read HTML ParagraphsA paragraph in HTML is simply a block of text enclosed within the <p> tag. The <p> tag helps divide content into manageable, readable sections. It’s the go-to element for wrapping text in a web page that is meant to be displayed as a distinct paragraph.Syntax:<p> Some Content... 5 min read HTML Text FormattingHTML text formatting refers to the use of specific HTML tags to modify the appearance and structure of text on a webpage. It allows you to style text in different ways, such as making it bold, italic, underlined, highlighted, or struck-through. Table of ContentCategories of HTML Text FormattingLogic 4 min read HTML Block and Inline ElementsHTML elements are either block-level, which structure the layout and span full width (like <div> or <p>), or inline, which styles content within blocks without breaking the flow (like <span> or <a>). This distinction covers 80–90% of common HTML usage.Inline and Block Level E 3 min read HTML CharsetsHTML charsets define how characters are represented in a web document. The character encoding ensures that text appears correctly across different devices and platforms.The <meta> tag's charset attribute is used to specify which character encoding the HTML document uses. By setting the charset 4 min read HTML ListHTML ListsAn HTML List allows you to organize data on web pages into an ordered or unordered format to make the information easier to read and visually appealing. HTML Lists are very helpful for creating structured, accessible content in web development.Types of HTML ListsThere are three main types of lists i 5 min read HTML Ordered ListsAn HTML Ordered List is created using the <ol> tag to display items in a specific sequence, typically numbered or alphabetically ordered. Each list item is defined using the <li> (list item) tag. Ordered lists are widely used for instructions, rankings, and step-by-step guides—appearing 5 min read HTML Unordered ListsAn unordered list in HTML is used to group a set of list items that don't need to be in a specific order. The items in an unordered list are usually displayed with bullet points by default. Here are the some key features of HTML unordered lists:No Order: Lists items without a specific sequence.Custo 4 min read HTML Description ListsAn HTML Description List is not as commonly used as unordered or ordered lists but serves an important purpose for displaying name-value pairs. This type of list is marked up using three tags: <dl>, <dt>, and <dd>.<dl> (Description List): This tag defines the description list 3 min read HTML Visuals & MediaHTML ColorsHTML Colors can be applied to text, backgrounds, borders, links, forms, tables, etc. This article provides an in-depth look at how colors can be applied to various elements such as text, backgrounds, borders, links, forms, and tables in HTML. We will explore different color formats including hexadec 11 min read HTML Links HyperlinksHTML Links, also known as hyperlinks, are defined by the <a> tag in HTML, which stands for "anchor." These links are essential for navigating between web pages and directing users to different sites, documents, or sections within the same page. The basic attributes of the <a> tag include 3 min read HTML ImagesThe HTML <img> tag is used to embed an image in web pages by linking them. It creates a placeholder for the image, defined by attributes like src, width, height, and alt, and does not require a closing tag.There are two ways to insert the images into a webpage:By providing a full path or addre 7 min read HTML FaviconA favicon (short for "favorite icon") is a small yet important image that appears next to your website’s title in the browser tab. Also known as a tab icon or bookmark icon, it helps users quickly identify and return to your site. Studies show that over 85% of users rely on visual cues like favicons 4 min read HTML VideoThe <video> element in HTML is used to show video content on web pages. It supports various video formats, including MP4, WebM, and Ogg. It is introduced in HTML5.Scroll down to the End, there is a Tutorial Video which is a live example of the Video Element displaying on this webpage.Syntax: 4 min read HTML Layout & DesignHTML TablesHTML (HyperText Markup Language) is the standard markup language used to create and structure web pages. It defines the layout of a webpage using elements and tags, allowing for the display of text, images, links, and multimedia content. As the foundation of nearly all websites, HTML is used in over 10 min read HTML IframesAn iframe, or Inline Frame, is an HTML element represented by the <iframe> tag. It functions as a 'window' on your webpage through which visitors can view and interact with another webpage from a different source.Iframes are used for various purposes like:Embedding Multimedia: Easily integrate 4 min read HTML LayoutHTML layouts are a technique used to divide a web page into multiple sections, making it easier to apply styles, organize content, and manage operations efficiently. This division improves readability, accessibility, and overall user experience.HTML layout is achieved through elements like <heade 4 min read HTML File PathsHTML file paths specify the location of files or resources that a webpage needs to access, such as images, videos, scripts, or other HTML documents. These paths tell the web browser where to find the files required to display the content correctly or to execute scripts as intended. To insert a file 3 min read HTML Projects& Advanced TopicsHTML FormsHTML forms, defined using the <form> Tags are essential for collecting user input on web pages. They incorporate a variety of interactive controls such as text fields, numeric inputs, email fields, password fields, checkboxes, radio buttons, and submit buttons. Over 85% of websites rely on for 5 min read HTML5 SemanticsHTML5 introduced a range of semantic elements that clearly describe their purpose in human and machine-readable language. Unlike non-semantic elements, which provide no information about their content, semantic elements clearly define their content. For instance, <form>, <table>, and 6 min read HTML URL EncodingA Uniform Resource Locator (URL) is simply the address of a website to access the website content. Web browsers retrieve pages from web servers using a URL (Uniform Resource Locator).What is URL Encoding?URL Encoding is the process of converting the URL into a valid format that is accepted by web br 4 min read HTML Responsive Web DesignHTML Responsive Web Design is a modern approach to web development that ensures web pages look great on any device, from phones and tablets to desktop computers. It focuses on making HTML elements automatically adjust—resizing, hiding, or repositioning based on the screen size. This approach guarant 11 min read Top 10 Projects For Beginners To Practice HTML and CSS SkillsLearning to code is an exciting journey, especially when stepping into the world of programming with HTML and CSS—the foundation of every website you see today. For most beginners, these two building blocks are the perfect starting point to explore the creative side of web development, designing vis 8 min read HTML Tutorial ReferencesHTML Tags - A to Z ListHTML Tags are fundamental elements used to structure and format content on web pages. They provide instructions to web browsers on how to render text, images, links, and other media.HTML tags are enclosed in angle brackets < > and usually come in pairs: an opening tag and a closing tag. The cl 15+ min read HTML Attributes Complete ReferenceHTML attributes are special words placed inside the opening tag of an HTML element to define its characteristics. Each attribute has two parts:Attribute nameAttribute value (separated by an equal sign = and enclosed in double quotes " ").Syntax:<tag_name attribute_name="value"> Contents... 8 min read HTML Global AttributesHTML attributes provide additional information about an element and define its properties. Global attributes are special types of attributes that can be used with any HTML element, offering common functionality to enhance behavior and presentation.Global attributes can be applied to any HTML element 5 min read HTML5 Complete ReferenceHTML (HyperText Markup Language) is the standard language used to create and design web pages. It defines the structure and layout of a webpage using a series of elements and tags.HTML5 is the latest version of HTML, bringing significant improvements for building modern web applications.It introduce 8 min read HTML5 MathML Complete ReferenceThe MathML comes in HTML5. The current MathML version is 3. It was introduced in the year 2015. MathML stands for Mathematics Markup Language. It is used to represent mathematical equations or expressions in web browsers, like other HTML elements. MathML is used to describe mathematics as a basis fo 3 min read HTML DOM Complete ReferenceHTML DOM (Document Object Model) is a programming interface that represents the elements of an HTML document in a tree-like structure.Allows developers to change content and layout using JavaScript.Enables dynamic updates and user interaction on websites.Facilitates the addition, removal, or modific 15+ min read HTML DOM Audio/Video Complete ReferenceHTML DOM Audio/Video properties and methods allow developers to control audio and video elements programmatically.These controls include playing, pausing, stopping, and adjusting volume.DOM methods enable dynamic interaction and customization of media elements.They enhance the user experience by off 2 min read SVG Element Complete ReferenceSVG stands for Scalable Vector Graphic. It can be used to make graphics and animations like in HTML canvas. It is a type of vector graphic that may be scaled up or down. Elements are the core things that is required to work with SVGs.List of SVG Elements:SVG ElementsDescription<a>The <a> 5 min read SVG Attribute Complete ReferenceSVG stands for Scalable Vector Graphic. It can be used to make graphics and animations like in HTML canvas. It is a type of vector graphic that may be scaled up or down. Attributes are the things that give the SVG shape, color, etc it will make the SVGs as attractive as you need.List of SVG Attribut 8 min read SVG Property Complete ReferenceSVG stands for Scalable Vector Graphic. It can be used to make graphics and animations like in HTML canvas. It is a type of vector graphic that may be scaled up or down. Properties are used for passing the value to the element, there are lots of properties that can be used in SVG elements. table{ di 7 min read HTML Canvas Complete ReferenceThe HTML “canvas†element is used to draw graphics via JavaScript. The “canvas†element is only a container for graphics. One must use JavaScript to actually draw the graphics. Canvas has several methods for drawing paths, boxes, circles, text, and adding images.Example: This example shows the basic 4 min read Like