In HTML, You can customize Mouse Cursor with your image design, when you move on a page or object that you custom.

HTML Contents:

In this article, I will show you How to customize Mouse Cursor on a webpage using HTML, CSS, and JavaScript. In this article, I give credit to GTCoding. But I create HTML and add CSS (StyleSheet) with JS (Javascript) in a file, not split.

I create index.html with img folder, and in img folder has an image (custom-cursor.png), So you can download it.

Now, Please follow with me step by step:

1. Create index.html

<!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>Document</title>
</head>
<body>
    <div class="wrapper">
        <nav>
            <ul>
                <li>
                    <a href="#">Home</a>
                </li>
                <li>
                    <a href="#">About</a>
                </li>
                <li>
                    <a href="#">Page</a>
                </li>
            </ul>
        </nav>
        <div class="cursor"></div>
    </div>
</body>
</html>
Markup

2. Add CSS StyleSheet in Head tag <head></head>

<style>
          * {
                margin: 0;
                padding: 0;
            }
            .wrapper {
                background: #161a1d;
                height: 100vh;
                display: flex;
                align-items: center;
                justify-content: center;
            }
            nav ul {
                list-style: none;
            }
            nav ul li {
                margin: 32px 0;
                animation: fade-down 2000ms forwards cubic-bezier(0.43, 0.53, 0.5, 1.02);
                transform: translateY(-100px);
                opacity: 0;
            }
            @keyframes fade-down {
                30% {
                    opacity: 0;
                }
                100% {
                    opacity: 1;
                    transform: translateY(0);
                }
            }
            nav ul li a {
                color: #cbf3f0;
                font-family: "Roboto", sans-serif;
                font-size: 30px;
                font-weight: bold;
                text-decoration: none;
                text-transform: uppercase;
                letter-spacing: 8px;
                position: relative;
            }
            nav ul li a::after {
                content: "";
                width: 0;
                height: 8px;
                background: #f5e502;
                position: absolute;
                bottom: -8px;
                left: 0;
                transition: all 500ms;
            }
            nav ul li a:hover::after {
                width: 100%;
            }
            nav ul li a:hover {
                cursor: url('img/custom-cursor.png'), auto;
            }
            .cursor {
                position: fixed;
                width: 40px;
                height: 40px;
                border-radius: 50%;
                border: 2px solid #eee;
                left: 0;
                transform: translate(-50%, -50%);
                pointer-events: none;
                transition: width 1000ms, height 1000ms;
            }
            .cursor.large {
                height: 70px;
                width: 70px;
            }
</style>
CSS

3. Add JavaScript in Body tag <body></body>

    <script>
        const cursor = document.querySelector(".cursor");
        const links = document.querySelectorAll("nav ul li a");
        const navlinks = document.querySelectorAll("nav ul li");

        document.addEventListener("mousemove", (e) => {
        let leftPosition = e.pageX + 4;
        let topPosition = e.pageY + 4;

        cursor.style.left = leftPosition + "px";
        cursor.style.top = topPosition + "px";
        })

        links.forEach(link => {
        link.addEventListener("mouseenter", () => {
            cursor.classList.add("large");
        })
        })

        links.forEach(link => {
        link.addEventListener("mouseleave", () => {
            cursor.classList.remove("large");
        })
        })

        // Animation

        navlinks.forEach((li, i) => {
        li.style.animationDelay = 0 + i * 140 + "ms";
        })
    </script>
JavaScript

4. Completed Code HTML/CSS/JS

<!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>Document</title>
    	<style>
	    * {
                margin: 0;
                padding: 0;
            }
            .wrapper {
                background: #161a1d;
                height: 100vh;
                display: flex;
                align-items: center;
                justify-content: center;
            }
            nav ul {
                list-style: none;
            }
            nav ul li {
                margin: 32px 0;
                animation: fade-down 2000ms forwards cubic-bezier(0.43, 0.53, 0.5, 1.02);
                transform: translateY(-100px);
                opacity: 0;
            }
            @keyframes fade-down {
                30% {
                    opacity: 0;
                }
                100% {
                    opacity: 1;
                    transform: translateY(0);
                }
            }
            nav ul li a {
                color: #cbf3f0;
                font-family: "Roboto", sans-serif;
                font-size: 30px;
                font-weight: bold;
                text-decoration: none;
                text-transform: uppercase;
                letter-spacing: 8px;
                position: relative;
            }
            nav ul li a::after {
                content: "";
                width: 0;
                height: 8px;
                background: #f5e502;
                position: absolute;
                bottom: -8px;
                left: 0;
                transition: all 500ms;
            }
            nav ul li a:hover::after {
                width: 100%;
            }
            nav ul li a:hover {
                cursor: url('img/custom-cursor.png'), auto;
            }
            .cursor {
                position: fixed;
                width: 40px;
                height: 40px;
                border-radius: 50%;
                border: 2px solid #eee;
                left: 0;
                transform: translate(-50%, -50%);
                pointer-events: none;
                transition: width 1000ms, height 1000ms;
            }
            .cursor.large {
                height: 70px;
                width: 70px;
            }
	</style>
</head>
<body>
    <div class="wrapper">
        <nav>
            <ul>
                <li>
                    <a href="#">Home</a>
                </li>
                <li>
                    <a href="#">About</a>
                </li>
                <li>
                    <a href="#">Page</a>
                </li>
            </ul>
        </nav>
        <div class="cursor"></div>
    </div>
    <script>
        const cursor = document.querySelector(".cursor");
        const links = document.querySelectorAll("nav ul li a");
        const navlinks = document.querySelectorAll("nav ul li");
        document.addEventListener("mousemove", (e) => {
        let leftPosition = e.pageX + 4;
        let topPosition = e.pageY + 4;
        cursor.style.left = leftPosition + "px";
        cursor.style.top = topPosition + "px";
        })
        links.forEach(link => {
        link.addEventListener("mouseenter", () => {
            cursor.classList.add("large");
        })
        })
        links.forEach(link => {
        link.addEventListener("mouseleave", () => {
            cursor.classList.remove("large");
        })
        })
        // Animation
        navlinks.forEach((li, i) => {
        li.style.animationDelay = 0 + i * 140 + "ms";
        })
    </script>
</body>
</html>
Markup

Video tutorial:

Full source code, download here