What are the differences between static websites, single-page applications (SPA), and server-side rendering (SSR)?
Victor Motogna
Head of Web Development
Reading time: 5 min
Updated: Jul 2, 2026
Key takeaways
- Static websites serve pre-built HTML files, so they are cheap to host on a CDN and ideal for simple, rarely-updated sites like landing pages or blogs.
- Server-side rendering (SSR) generates HTML on the server for each request, enabling dynamic, user-specific content but forcing page reloads on its own.
- Single-page applications (SPA) render content in the browser with JavaScript, giving smooth interactions but historically raising SEO and performance concerns.
- Modern frameworks like Nuxt (based on Vue) can build SPAs, SSR sites, and static sites, and SSR with Nuxt addresses both SEO and performance.
- Choose based on your needs: static for simple low-cost sites, SPA for richer interactivity, and SSR when you need both performance and SEO.
The web has been around for a while, and we now have many tools and ways to build websites. Over the years, the trends changed. In a way, it seems like we're heading back to where we started. You'll see what I mean by that in this article. This article won't compare tools or technologies. Instead, it focuses on the different methods we can use to build websites.
To understand our options for building a website, let's walk through the history of websites and how they evolved.
Static websites
In the early days of the internet, web pages were entirely static HTML documents. The browser simply made an HTTP request to the web server, which responded with an HTML file. That file was already created and stored somewhere. It was simple. But it meant someone had to create an HTML file for every page, and the site had no dynamic content.
Server-side rendering (SSR)
Server-side rendering solved those issues, and the concept is simple. The browser makes an HTTP request to the web server. The server generates the HTML response and returns it to the browser. This lets the server serve dynamic data, fetched from a database or an external service. Now websites can show user-specific information. For example, when I log in, it says Hello, Florin instead of Hello User. This is done with simple templates that have placeholders for the dynamic content. The example above would be implemented something like this:
<pre>
<div> Hello, #{user.name} </div>
</pre>
It works well, but it has downsides. It forces the browser to refresh the page to get the new HTML content. So if we want a site where users can leave comments on articles, the page reloads once a user submits a comment. That may not seem like a big deal, but it can annoy users.
Client-side rendering
Next, websites started fetching data from the server asynchronously, usually as JSON or XML. They rendered the content themselves using AJAX requests. Note that AJAX is now being replaced by the Fetch API. This approach gave a better user experience. It let sites interact with users without reloading pages. It could even render the whole page on the client side. These sites are called single-page applications (SPA).
Client-side rendering has many advantages, but it isn't always the best option. At first, SEO was a downside. Most crawlers didn't run the JavaScript, so they crawled empty pages because the content wasn't rendered. Most web crawlers have since fixed this, but other SEO issues remain. For example, Google may penalise your site if there's a lot of processing on the main thread, which often happens when building a single-page app. Performance can also be an issue, since all the rendering happens on the client. Many devices are powerful enough. But plenty of cheaper phones and computers still struggle.
Server-side rendering, again
Since rendering HTML in the browser has limits, we thought to use servers again. This time we do it with modern JavaScript frameworks like Nuxt, an open-source framework based on Vue. Nuxt works in several ways. It lets developers build SPAs, server-side rendered sites, and even static sites.
Nuxt lets you build modern web applications with Vue, but it also runs a server that renders the HTML instead of the client. This solves both the SEO and performance issues while keeping a nice user experience.
Static websites strike back
I mentioned that Nuxt can generate static sites. You might wonder why anyone needs that now that server-side rendering works so well. For starters, you may not need a dynamic site. Think of a presentation page with an about page and maybe a portfolio that rarely changes. Another reason is hosting cost and complexity. You can host a static site for free, or almost for free, on a CDN.
For users, it works like the old days. The browser requests a page, and the server returns an HTML file. But for developers, it offers many benefits over writing plain HTML files. You can reuse components or parts of the site. For example, say you have a landing page and an about page and want the same header and footer on both. You can create two components and reuse them on both pages, with no need to rewrite the HTML. That makes development faster and easier to maintain.
Nuxt offers more than that. It lets you fetch dynamic data from different sources, such as an API, and generate HTML files from that content. So you can get almost dynamic content by rebuilding the HTML files when you need to refresh it. Here's a useful example. Consider a blog. There's no user-specific content, so it doesn't need a server to render it, since the output is always the same. Instead, you can use a headless CMS to store and publish content, then trigger a rebuild that generates new HTML files with the new content.
Now that we've gone through all this, let's circle back to the original question.
What are the differences between static websites, single-page applications, and server-side rendering?
Static websites are a great option for a simple landing page or blog, with low maintenance and low cost. If you want a better user experience and a slightly more complex site where users don't reload pages, a single-page application (SPA) is the way to go. And if you want the full package, solving both performance and SEO challenges, we recommend server-side rendering with Nuxt and Vue. It all comes down to your needs, your budget, and the long-term goals of your site.
If you need help building your next web app, platform, or site, and you're not sure which solution fits best, drop us a line in the chat and we'll do our best to point you the right way. You can also learn more about our web development and Vue.js development services, or read Understanding Nuxt 3 - Part I to go deeper on the framework.
About the author: Florin is the Head of Web Development at Wolfpack Digital and an experienced full-stack developer with a strong grasp of web development tools. He graduated in Computer Science at the Technical University of Cluj-Napoca, works mostly with Ruby on Rails and JavaScript, and loves sharing knowledge and keeping up with new technologies.
