Next.js Online Compiler | Free Online Compiler

Page (JSX)

const metadata = {
    title: "Next.js Starter",
    description: "App Router style layout and page."
};

function RootLayout({ children }) {
    return (
        <div className="shell">
            <header className="topbar">
                <div className="logo">Next</div>
                <nav className="nav">
                    <a href="#">Docs</a>
                    <a href="#">Solutions</a>
                    <a href="#">Blog</a>
                </nav>
            </header>
            <main className="content">{children}</main>
            <footer className="footer">Powered by React 18 patterns</footer>
        </div>
    );
}

function Page() {
    const features = [
        "File based routing",
        "Server components",
        "Streaming UI",
        "Edge ready"
    ];

return (
        <section className="hero">
            <p className="kicker">{metadata.description}</p>
            <h1>{metadata.title}</h1>
            <p className="lead">
                This browser sandbox mimics Next.js layout patterns.
            </p>
            <div className="grid">
                {features.map((item) => (
                    <div className="tile" key={item}>
                        <h3>{item}</h3>
                        <p>Swap this content or build your own page.</p>
                    </div>
                ))}
            </div>
            <button className="cta">Deploy</button>
        </section>
    );
}

const root = ReactDOM.createRoot(document.getElementById("root"));
root.render(
    <RootLayout>
        <Page />
    </RootLayout>
);

CSS

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f5f5f5;
    color: #111;
}
.shell {
    min-height: 100vh;
    background: #ffffff;
}
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 30px;
    border-bottom: 1px solid #eee;
}
.logo {
    background: #111;
    color: #fff;
    padding: 6px 10px;
    border-radius: 4px;
    font-weight: bold;
    letter-spacing: 1px;
}
.nav a {
    margin-left: 16px;
    text-decoration: none;
    color: #111;
    font-size: 14px;
}
.content {
    padding: 30px;
}
.hero {
    background: #fafafa;
    padding: 24px;
    border-radius: 12px;
    border: 1px solid #eee;
}
.kicker {
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 11px;
    color: #666;
}
.lead {
    margin-top: 10px;
    color: #444;
}
.grid {
    display: grid;
    gap: 12px;
    margin: 20px 0;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}
.tile {
    background: white;
    padding: 16px;
    border-radius: 10px;
    border: 1px solid #eee;
}
.cta {
    background: #111;
    color: white;
    border: none;
    padding: 10px 18px;
    border-radius: 6px;
    cursor: pointer;
}
.footer {
    padding: 18px 30px;
    border-top: 1px solid #eee;
    font-size: 12px;
    color: #666;
}

Output

Next.js Compiler