Introduction to <base>tag

The <base>tag in HTML is one of those lesser-known elements that can significantly enhance your website's performance and management. Though it isn't as frequently discussed as other tags, understanding its function and applications can provide web developers with a powerful tool for managing links and resources. In this comprehensive guide, we'll delve into what the <base>tag is, its syntax, use cases, and best practices.

Copy to clipboard
<!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>title of <base> tag</title>
    
        <base href="https://example.com/">
    
        <link rel="stylesheet" href="styles.css">
    </head>
    <body>
        <div class="container">
            <div class="content">
                <p>This example demonstrates the use of the <code>&lt;base&gt;</code> tag in HTML to set a base URL for all relative URLs. 
 This makes managing links and resources easier.</p>
                <a href="about.html" class="button">Learn More</a>
                <img src="https://c4.wallpaperflare.com/wallpaper/418/177/276/apple-mac-pro-wallpaper-preview.jpg" alt="Sample Image">
            </div>
        </div>
    </body>
    </html>
Copy to clipboard
body {
        font-family: 'Helvetica Neue', sans-serif;
        background-color: #14171f;
        margin: 0;
        padding: 0;
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100vh;
    }
    
    .container {
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100%;
    }
    
    * {
        color-scheme: dark;
    }
    
    .content {
        background-color: #263653;
        border-radius: 10px;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        padding: 30px;
        text-align: center;
        max-width: 500px;
        width: 100%;
    }
    
    .content p {
        font-family: sans-serif;
        font-size: 18px;
        margin-bottom: 20px;
    }
    
    .button {
        display: inline-block;
        padding: 10px 20px;
        margin-top: 20px;
        background-color: #13161a;
        color: #ffffff;
        text-decoration: none;
        border-radius: 5px;
        transition: background-color 0.3s ease;
    }
    
    .button:hover {
        background-color: #0056b3;
    }
    
    .content img {
        max-width: 100%;
        height: auto;
        margin-top: 20px;
        border-radius: 10px;
        border: 2px solid #ddd;
    }

Global Attributes

AttributesDescription
accesskeySpecifies a shortcut key to activate or focus an element.
autocapitalizeControls whether and how text input is automatically capitalized.
classSpecifies one or more class names for the element, allowing CSS styling and JavaScript manipulation.
contenteditableSpecifies whether the content of an element is editable or not.
contextmenuSpecifies a context menu for the element.
dirDefines the text direction. Possible values are "ltr" (left-to-right), "rtl" (right-to-left), and "auto".
draggableSpecifies whether an element is draggable. Possible values are "true" or "false".
enterkeyhintSpecifies the action label or icon to be shown for the enter key on virtual keyboards.
hiddenIndicates that the element is not yet, or is no longer, relevant. The browser does not display elements that have the `hidden` attribute set.
idSpecifies a unique identifier for the element.
inputmodeProvides a hint to browsers for which virtual keyboard configuration to use when editing this element or its descendants.
isAllows you to specify the type of custom element.
langSpecifies the language of the element's content.
nonceA cryptographic nonce ("number used once") that can be used by Content Security Policy (CSP) to determine whether or not a given fetch will be allowed to proceed.
partSpecifies the element’s part in the shadow DOM.
slotAssigns a slot in a shadow DOM shadow tree.
spellcheckIndicates whether the element is subject to spell checking.
styleProvides inline CSS styling for the element.
tabindexSpecifies the tab order of the element.
titleAdds extra information about the element, displayed as a tooltip when hovering over the element.
translateSpecifies whether the content of the element should be translated. Possible values are "yes" or "no".
HTML AttributesGlobal AttributesEvent Attributes
To view the full list
To view the full list
To view the full list
elementsChrome BrowsersMicrosoft Edge BrowserFirefox BrowsersSafari BrowserOpera Browser
<base>YesYesYesYesYes