Fonts, SEO, Metadata & Favicon in Next.js
Next.js provides built-in features for font optimization, SEO, metadata management, and favicon handling to help build fast, accessible, and search-engine-friendly applications.
Font Size & Fonts in Next.js
Font size controls readability and user experience. In Next.js, fonts are optimized using the next/font module, which eliminates layout shift and improves performance.
import { Inter } from "next/font/google";
const inter = Inter({ subsets: ["latin"] });
<body className={inter.className}>Tailwind font sizes like text-sm, text-base, and text-lg help maintain consistency across devices.
SEO in Next.js
SEO (Search Engine Optimization) helps your website appear in search results. Next.js improves SEO by default using server rendering and static generation.
Faster pages, optimized images, and clean HTML output directly improve SEO rankings.
Metadata in Next.js
Metadata defines information about a page, such as title and description. Next.js allows defining metadata per page using the metadata export.
export const metadata = {
title: "Routing in Next.js",
description: "Learn routing with examples",
};This improves search visibility and controls how pages appear in Google results and social media previews.
Favicon in Next.js
A favicon is the small icon shown in browser tabs. It helps users recognize your site quickly.
app/
└── favicon.icoNext.js automatically detects the favicon when placed in the app directory.
Real-World Example
A documentation website uses readable fonts, correct font sizes, proper metadata for SEO, and a favicon for brand identity. Together, these create a professional user experience.
Interview Tip
Fonts improve UX, metadata improves SEO, and favicon improves brand recognition — all are essential for production-ready Next.js apps.