Gatsby

React-based static site framework with a unified GraphQL data layer and rich plugin ecosystem.

• Official Website: gatsbyjs.com
• Category: Static Site Generators
• Type: React Static Site Generator
• Pricing / License: Open Source (MIT)

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Overview

Gatsby is an open-source, React-based framework designed for building fast, content-rich static websites and applications. It combines static HTML pre-rendering with a unified GraphQL data layer that pulls content from Markdown files, headless CMS platforms, REST APIs, and databases at build time.

Once built, Gatsby outputs pre-rendered HTML, CSS, and optimized assets that load almost instantaneously from any static hosting provider or CDN.

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Key Highlights & Features

• Unified GraphQL Data Layer: Query Markdown, JSON, headless CMSs, and external APIs through a single GraphQL schema at build time.
• Automatic Image Optimization: Built-in gatsby-plugin-image generates responsive WebP/AVIF images and lazy-loaded placeholders automatically.
• 2,500+ Plugins & Starters: Extensive ecosystem for SEO, sitemaps, RSS feeds, analytics, and headless CMS integrations.
• Pre-Rendered Static Output: Compiles React components into fast, SEO-friendly static HTML files with automatic code splitting and route prefetching.

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How It Works with Static Websites

Create and build a Gatsby static site:

# Create a new Gatsby project
npm init gatsby

# Start the local development server
npm run develop

# Build production static HTML into public/
npm run build

Example page component (src/pages/index.js):

import * as React from "react"

export default function IndexPage() {
  return (
    <main>
      <h1>Welcome to My Static Gatsby Site</h1>
      <p>Pre-rendered at build time and served from a CDN.</p>
    </main>
  )
}

export const Head = () => <title>Home Page</title>

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When to Use It

• React developers building content-heavy marketing sites, blogs, or documentation portals.
• Websites aggregating content from multiple sources (Markdown, Contentful, WordPress, or Sanity) via GraphQL.
• Projects that benefit from automated responsive image processing and rich plugin integrations.