What is Headless WordPress and Should You Use It? (Pros & Cons)

What is Headless WordPress and Should You Use It in 2024?

You may have heard the buzzword "headless" thrown around a lot lately in the WordPress space. But what exactly does headless WordPress mean and is it something you should be using for your website in 2024? In this comprehensive guide, we‘ll dive deep into the world of headless WordPress – explaining what it is, how it works, and helping you decide if it‘s the right choice for your specific needs and use case.

To start, let‘s define what we mean by "headless" WordPress. In a nutshell, a headless WordPress setup is one where the WordPress backend (the admin area where you create and manage content) is decoupled from the frontend (the actual website that visitors see and interact with). With a headless architecture, WordPress essentially functions solely as a content management system (CMS), with its frontend presentational layer completely separated.

In a traditional WordPress setup, every time a visitor loads a page on your site, WordPress dynamically generates the HTML by retrieving the required content from the database and rendering it using the active theme‘s template files. Everything – content creation, data storage, HTML generation – all happens within WordPress itself.

With headless WordPress, the frontend and backend are independent of each other. Content is still created and stored in your WordPress backend. But instead of also being responsible for generating the HTML frontend, WordPress simply makes the content available via APIs (like the REST API or GraphQL). A separate frontend app (typically built with a JavaScript framework like React or Vue) then consumes that content and is in charge of presenting it to visitors.

So in summary:

• Traditional WordPress = WordPress powers both the backend content repository and renders the frontend HTML
• Headless WordPress = WordPress only powers the backend content repository, a separate frontend app renders the HTML

From a technical perspective, here‘s a simplified look at how the flow of a headless WordPress architecture works:

1. An author creates and publishes content (posts, pages, etc.) in the WordPress backend admin area
2. That content is stored in the WordPress database (MySQL)
3. When a frontend app needs content, it sends a request to the WordPress REST API or GraphQL endpoint, asking for the specific data it needs
4. WordPress grabs the requested content from the database and returns it to the frontend app as JSON data
5. The frontend app then uses that JSON data to render the content into HTML and display it to visitors

The key thing to note is that there is a complete separation of concerns between content management and frontend presentation.

So what are the potential benefits of using a headless WordPress architecture? The main advantages are:

• Flexibility and customization – With headless, the frontend is completely decoupled from WordPress, meaning developers are free to build the frontend using their preferred framework and tools (like React). This provides a blank slate for creating highly customized frontend experiences.

• Performance – Since the frontend is its own app, it can be highly optimized for speed and performance without any of the constraints or overhead of WordPress. The frontend app can also implement its own caching layer.

• Scalability – Headless WordPress sites are able to better scale and handle high traffic since the frontend and backend can be scaled independently.

• Future-proofing – If you ever need to move away from WordPress down the road, a headless architecture makes it much easier to migrate your content to a new CMS since it‘s already separated.

However, headless WordPress also comes with some significant downsides and considerations:

• More complex architecture – Headless introduces additional complexity since you‘re essentially managing two separate apps (the WordPress backend and the frontend).

• Higher development costs – Building a headless site requires more specialized development skills (in React for instance) and the need to wire up the connections between the frontend and WordPress APIs. This can significantly increase development time and costs.

• Lack of WordPress plugins support – Many WordPress plugins rely on being deeply integrated with both the backend and frontend of the site. With headless, you lose the ability to use those plugins.

• No live previewing – With the frontend decoupled, content authors lose the ability to easily preview the frontend appearance of their content before publishing.

• Potentially worse SEO if not implemented properly – Since the frontend is a JavaScript app, it‘s critical that it outputs fully formed HTML that search engines can crawl and index (rather than an empty shell that requires client-side rendering to display anything).

So when does it make sense to use headless WordPress? In general, headless is a good fit for:

• Sites that need a highly customized frontend experience (like a web app) that doesn‘t fit into the WordPress theme structure
• Projects with a large budget that can afford the higher development costs
• High traffic sites that need the frontend and backend to be able to scale independently
• Scenarios where you want to use WordPress with an existing frontend app built in a different language or framework

On the flip side, you probably don‘t need to use headless WordPress if:

• You‘re building a standard content-driven site (like a blog, business site, portfolio, etc.) and are fine using a WordPress theme for the frontend
• You rely heavily on WordPress plugins that tightly integrate with the frontend
• You don‘t have the budget for the higher development and maintenance costs of a headless architecture
• You‘re a solo blogger, content creator, or site owner who needs to be able to quickly spin up new sites without the overhead and complexity of headless

If you do decide that headless WordPress is right for your project, here is a high-level overview of the steps for getting a basic headless WordPress site up and running:

1. Spin up a WordPress instance on a host
2. Install and activate the WPGraphQL plugin which will add a GraphQL endpoint to your WordPress site
3. Create your content (posts and pages) in the WordPress backend
4. Set up a new React app using a tool like Create React App
5. Install the apollo-boost and react-apollo packages in your React app to be able to query the WordPress GraphQL endpoint
6. Create a basic React component that uses apollo-boost to fetch content from the WordPress GraphQL endpoint and display it
7. Build out the rest of your React frontend, using WordPress as the content source

While you can certainly set up the different pieces of a headless WordPress architecture yourself, there are also some great tools and services available specifically designed to make the process easier. One of the leaders in this space is WP Engine which offers Atlas Content Modeler – a complete headless solution that provides an enhanced GraphQL API, frontend starter templates, and development tooling to streamline the headless development process.

In addition to Atlas, some of the other popular tools and frameworks in the headless WordPress space include:

• WPGraphQL – Open source WordPress plugin that provides an extendable GraphQL schema and API for any WordPress site
• Gatsby – React-based static site generator that can create blazing-fast and SEO-friendly frontend apps sourced from WordPress (or any other CMS)
• Frontity – React framework and CLI specifically designed for building performant headless WordPress sites

So where does this leave us – should you be using headless WordPress for your project? As with most things in web development, the answer is "it depends". While headless is unquestionably a powerful approach that is likely to become more and more prevalent in the coming years, it‘s critical to understand that it also introduces additional complexity and development/hosting costs.

For most standard WordPress sites (blogs, business sites, ecommerce stores, etc.), the traditional WordPress architecture is still probably the most appropriate choice. You get the benefit of WordPress‘ mature ecosystem of themes, plugins, and hosting options without the overhead and specialized knowledge required for headless.

Where headless really shines is for projects that require a highly customized frontend that doesn‘t fit well into the WordPress theme paradigm or for extremely high traffic sites that need to scale their frontend and backend independently. But for the vast majority of sites, headless is likely overkill.

The key is to focus on finding the right tool for the job based on the specific needs, constraints, and goals of your individual project. Don‘t choose headless just because it‘s the new buzzword – make sure you understand the tradeoffs and implications before diving in.

Headless WordPress is undoubtedly an exciting development in the WordPress world that opens up new possibilities. But it‘s not a one-size-fits-all solution. Whether you ultimately decide to stick with a traditional WordPress architecture or go headless, the most important thing is to build a great site that provides value to your visitors. Focus on that and the rest is just implementation details.