Headless WordPress has become increasingly popular in recent years. In a headless setup, WordPress plays to its strengths as a content management system, while a decoupled front end gives developers the full flexibility of a JavaScript-based web framework.

WordPress is a common choice for the back end of a headless site architecture. Its unmatched content management capabilities and intuitive admin interface are navigable by non-technical users. Its extensive plugin ecosystem provides endless opportunities for customization.

But when it comes to the front-end framework, the choice isn’t as straightforward. There are competing alternatives, each with strengths and weaknesses. Two of the most widely used are Next.js and Gatsby.

In this article, we’ll help you decide between Gatsby vs Next.js for headless WordPress. We’ll look at the strengths and weaknesses of each, how well they integrate with WordPress, and the factors you should keep in mind when making your decision.

Headless WordPress Fundamentals

Before we get to the detailed comparison, it’s helpful to understand how front-end web frameworks interact with WordPress. For writers and editors, the WordPress back end retains its familiar interface. But instead of PHP templates serving pages, WordPress exposes the content as data.

That data is accessed over the web via WordPress’ REST API or using the popular WPGraphQL API plugin, which allows WordPress to respond to requests that use the GraphQL query language. Some web frameworks also provide plugins or libraries that simplify data retrieval from WordPress via these APIs.

Gatsby for Headless WordPress

Gatsby is an open-source front-end framework based on React. It’s something of a pioneer in the React static site generation field. It became hugely popular when it was first released in the mid-2010s and grew to be one of the most widely used frameworks. Its popularity has, however, declined in recent years in the face of innovation from competitors like Next.js.

How Does Gatsby Build Sites?

By default, Gatsby generates static HTML, CSS, and JavaScript for each of the site’s pages during the build process. That makes the pages fast because by the time a visitor arrives, everything is pre-generated and ready to be displayed. Gatsby also has dynamic rendering options, which we’ll discuss in more depth in a moment.

The official Gatsby project provides the gatsby-source-wordpress plugin, which makes it straightforward for developers to query WordPress data inside their React pages. The plugin pulls content from WordPress via the WPGraphQL API. It is possible, but less straightforward, to use the REST API instead.

The Gatsby Plugin Ecosystem

Gatsby has a large ecosystem of plugins that allow developers to implement front-end features with modular components. For example, there are plugins for front-end performance optimization, including for image optimization and lazy loading. The plugin ecosystem also makes it straightforward to add Google Analytics, generate sitemaps, embed SEO metadata, and so on.

Project Health

Gatsby is a mature project, and development has slowed in recent years. The Gatsby project was acquired by Netlify in 2023, and since then, development has focused on stability rather than new features. Some developers have moved away from Gatsby because they consider it is no longer under active development. However, Netlify has expressed its commitment to maintaining the framework in its current form.

Next.js for Headless WordPress

Like Gatsby, Next.js is an open-source React framework. It was created by Vercel, a web application cloud platform, which continues to lead development on the project.

How Does Next.js Build Sites?

Next.js takes a different approach to Gatsby’s default static site generation. It was initially developed as a solution for server-side rendered (SSR) React applications. Rendering on the server and sending HTML to the client allowed for better SEO than the typical approach for single-page web apps, which primarily render in the browser.

However, over time, Next.js has evolved, and it now offers various rendering options, including server-side rendering, static site generation, and combinations of the two. One of Next.js’s biggest innovations was incremental static regeneration (ISR), in which pages are built initially, then periodically rebuilt on the server so content remains fresh.

Next.js and WordPress

Next.js can fetch data from WordPress using any of the methods WordPress makes available, including the REST API, GraphQL, or even directly from the database. Because Next.js allows server-side code, you can communicate with WordPress to update content without a complete site rebuild.

Project Health

Next.js is an actively developed and hugely popular project. It is one of the leading React frameworks and is used to create sites and apps of many different types. The developers continuously innovate and add new features. So, if you’re looking for an actively developed and constantly updating project, Next.js may be the right choice for you.

Gatsby vs. Next.js: Which Should You Choose?

At a high level, the choice comes down to the type of site you want to build. By default, Gatsby is an excellent static site generator. If your site does not update frequently, then Gatsby will get the job done. If your site does update frequently, then Next.js is probably more appropriate.

Static vs. Dynamic Sites

That picture is complicated by the fact that Gatsby also has dynamic capabilities, including per-page Deferred Static Generation (DSG) and Server-Side Rendering (SSR). Next.js offers SSR and Incremental Static Regeneration (ISR), with ISR particularly efficient for frequently updated content. It revalidates pages in the background while serving cached versions to visitors.

The choice depends on your needs. Gatsby performs well for primarily static sites with some dynamic content, while Next.js with ISR is better suited for content-heavy sites requiring regular updates without full redeployments. Each framework caches pages after generation rather than regenerating them on every request, making direct performance comparisons highly use-case dependent.

Developer Experience

Gatsby’s plugin ecosystem makes it easier to add new features without developing them from scratch. It also has an elegant, unified data access layer based around GraphQL. Some developers prefer this simpler approach, while others find it restrictive.

Next.js is more flexible and less opinionated. You can fetch data from WordPress using various methods, selecting the one that is best suited to your use case (ISR, SSG, SSR, CSR). Developers can write async functions within site pages to fetch data from WordPress at build time, on the server, or even on the client side.

A consequence of this flexibility is that the framework doesn’t do as much for you. You have to write the code to call the API and handle the data. You will often write JavaScript code instead of GraphQL queries. Which framework works best for your team depends on their experience and expertise.

Your React Front End Needs a Reliable WordPress Back End

Whether you choose Gatsby or Next.js for your headless WordPress front end, your site’s performance depends on a reliable, scalable WordPress back end. Pressable’s headless WordPress hosting provides a secure, high-performance foundation for decoupled WordPress sites.

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