The HTML <ul> compact Attribute is used to define the list should be smaller than normal by reducing the space between the list items and the indentation of the list. It is a Boolean attribute.
Syntax:
<ul compact> Note: The HTML ul compact attribute is not supported by HTML 5 instead of using this we can use the CSS line-height property with 80% value.
Examples: In this example we display an unordered list with the compact attribute applied, aiming to render the list smaller. The list enumerates GeeksforGeeks courses: Geeks, Sudo, Gfg, Gate, and Placement.
<!DOCTYPE html>
<html>
<head>
<title>HTML ul compact attribute</title>
</head>
<body>
<h1>GeeksforGeeks</h1>
<h2>HTML ul compact attributeg</h2>
<p>GeeksforGeeks courses List:</p>
<ul compact>
<li>Geeks</li>
<li>Sudo</li>
<li>Gfg</li>
<li>Gate</li>
<li>Placement</li>
</ul>
</body>
</html>
Output:

Supported Browsers: This attribute is not supported by any browsers this days.