SSG vs SSR: Which approach will dominate Web Development in 2026?

SSG vs. SSR

Static Site Generation vs. Server-Side Rendering quick review

If you're looking for the short answer, here's a quick comparison between Static Site Generation (SSG) and Server-Side Rendering (SSR).

Feature

Static Site Generation (SSG)

Server-Side Rendering (SSR)

HTML generation

At build time

On every request

Performance

Excellent

Very Good

SEO

Excellent

Excellent

Personalization

Limited

Excellent

Infrastructure

CDN

Server

Hosting cost

Lower

Higher

Best for

Blogs, documentation, marketing websites

Ecommerce, SaaS, dashboards

Both rendering strategies can deliver excellent SEO performance. The best choice depends on how frequently your content changes, whether pages need personalization, and the level of infrastructure you're prepared to manage.

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What is SSG?

Static Site Generators generate content at the build time of new pages or when changes are made to the content. Because the SSGs are creating static sites, there is no need to load pages based on user requests, ensuring fast load times. The content will remain consistent regardless of users, providing a reliable experience akin to static pages.

By incorporating SSGs into the tech stack, teams can access multiple data sources and use the latest web development approaches. Content that does not require high levels of personalization is ideal for the SSG approach. It is common to use static website generators alongside headless CMSs, static hosting sites, and CDNs.

How does SSG work?

SSG workflow

A static site generator generates an entirely static HTML website using raw data and a set of templates. In essence, a static site generator automates the process of coding individual HTML pages and serves them to users in advance.

An SSG receives a webhook notification when there is a change to the content, and the changes are deployed and cached on the site. Team members can store pre-rendered HTML files in close geographical locations, reducing web page load time.

Why use SSG?

The SSG approach is suitable for building applications where the content does not change too often, and it can bring many benefits, such as:

SSG sites are extremely fast

Since HTML does not require much processing upfront, serving an HTML page is much faster for users. Because all of your site's pages and content were generated during the build process, the client will begin seeing content immediately.

SSG is better for SEO

Search engines like HTML content, and that's why SSG is crawlers' favorite, and your site can become Google's fav too.

Empowered security

The risk of cyber attacks is minimal, thanks to the lack of databases.

SSG is cost-effective

There is no server! That means your hosting plans cost you, mmmm 0$ 🤩

Caching with CDNs

HTML pages offer CDN caching the opportunity to shine. It is much faster to access pages because they are stored nearer to the user globally. With CDN, you no longer have to wait for the server to render the page but receive it from the CDN, saving resources and money.

SSG drawbacks

  • Not suitable for highly dynamic or customizable content

  • It can be slow when it comes to rebuilding large sites, which is why using static content can be beneficial.

  • Hard to keep it up-to-date if there are often changes

When to use SSG?

As long as you have the option to render pages at build time, you can use SSG for any set of circumstances. Even though there are sites for which SSG is an indispensable solution:

Documentation websites

SSG is the best choice for these kinds of websites. Why? Documentation sites don't have dynamic content; rendering them on the server per request would be supererogatory and slower. By using SSG, the content will be delivered quickly. 

Blog

Although blogs can have dynamic content and be more vivid than documentation websites, I would choose SSG again. Some new technologies and approaches make SSG more practicable. Nowadays, Headless CMSs help you store and fetch data at build time. The best practice for how this combo is efficient is the most common integration between Headless CMS and Jamstack. This integration is pretty simple and extremely fast, especially when using Next.js for better performance.

Your static front-end project is rebuilt when a new blog post is submitted through your headless CMS. The static site is updated with fresh content with just one click when you add a new blog post. By using a CDN, it still loads extremely fast. In the end, you get a super-fast and secure blog like this BCMS you are reading right now.

Marketing & Portfolio websites

Popular frameworks like Gatsby, Nuxt.js, Hugo, and Jekyll are the typical choices for building marketing websites that can quickly scale or smaller projects like portfolio sites. Utilizing the PRPL pattern, these sites load as fast as possible by first loading only the most essential HTML, data, CSS, and JavaScript.

SSG vs SSR: performance benchmarks

One of the biggest differences between Static Site Generation and Server-Side Rendering is how quickly pages can be delivered to users.

Although exact performance depends on your hosting provider, CDN configuration, caching strategy, and framework, static websites generally achieve lower response times because HTML is generated before users request the page.

Metric

SSG

SSR

Time to First Byte (TTFB)

30–100 ms

150–600 ms

CDN cache efficiency

Excellent

Moderate

Server load

Low

Higher

Scalability

Excellent

Good

Fresh content

Build dependent

Real time

For content-heavy websites such as blogs or documentation portals, these performance advantages often translate into faster Core Web Vitals, lower infrastructure costs, and a better user experience. Dynamic applications may accept slightly slower response times in exchange for real-time content and personalization.

💡These values are representative benchmarks and may vary depending on your infrastructure, caching strategy, CDN configuration, and rendering framework.

What is an SSR?

Server-side rendering is like Static Site Generation, except that you render the pages at runtime instead of at build time. Also, another crucial difference is that with SSR, you can't provide UI without a server. 

SSR is the perfect solution for dynamic content experiences and personalization. 

Instead of waiting several seconds for specific elements to load, SSR provides clients with a fully rendered page on demand. Before passing them on to the browser, the server renders them. A database or headless CMS provides data to a client when content is requested. Although loading everything on demand takes longer, it ensures that content is current and that any changes are immediately visible.

How does SSR work?

Besides having a server, SSR generates data way differently than SSG.

SSR workflow

SSR flow goes like this: 

The user in a browser requests a web page from a server, then the server generates HTML output and sends it back to the browser to show you the web page.

But does SSR why generate the output at every request? 

The answer is no!

In situations where the page is dynamic, such as user-specific content, server-side rendering makes sense, and the web page is generated every time the page is requested. Regenerating the output always makes no sense if the output is always the same, unless employing incremental static regeneration.

Why use SSR?

It is highly recommended to use server-side rendered sites for time-sensitive content and applications that rely on a high degree of user interaction, especially with React frameworks. E-commerce can benefit from SSRs since personalization is much easier. When using SSRs, ensure your infrastructure can handle the traffic and that the servers scale quickly as traffic increases.

SSR provides instantly accessible content

Content on demand is actually content on the go. That means that after the client's request, SSR sends the rendered HTML to the client, who will start seeing the content almost immediately. This way, content is always up-to-date.

There is no content rebuilding

Unlike SSG, you don't have to think about content rebuilding with Server Side Rendering because changes to content are displayed instantaneously.

Content sharing

A snippet with an image and a title is automatically created when a social network user posts a link to a server-side rendered application.

SSR Content Sharing

This excerpt gives viewers a sneak peek at the website and provides more details about the link's contents. Therefore, social network snippets might assist you in increasing traffic by drawing attention to the content of your application, like the one above about Programmatic SEO.

Integration with proprietary tech stacks

To improve personalization, the server-side opens the door for direct integration with internal systems such as inventory and headless CMS.

SSR drawbacks

  • The server is mandatory, which makes SSR more expensive.

  • It is not possible to deploy to a static CDN.

  • SSR, by default, is slower than SSG. 

  • Incompatible with some UI libraries

When to use SSR?

SSR is suitable for building complex web applications that require user interaction, rely on a database, or have frequently changing content. Since the content on these sites changes frequently, users need to see the updated content as soon as it is available. So if you want to have some of these kinds of sites, consider SSR: 

E-commerce

E-commerce sites are the ones that change frequently; users have the most requests for them; that's why SSR is the perfect choice for e-commerce.

Social media sites often leverage client-side rendering to enhance user interaction.

These are places where content changes from second to second. These types of sites are very dynamic and personalized because most of the content is created by the users. For such platforms and interactions, the choice should be SSR.

Media sites and apps

SSR is best for heavily text-based web apps, like written media apps and websites. Being up-to-date is one of the most important things for this kind of platform. SSR can provide that all the necessary information and breaking news can be delivered as soon as possible to all clients across the world.

How to choose between SSG and SSR

Still unsure which rendering strategy fits your project? Use this simple decision tree as a starting point.

Decision tree for choosing between Static Site Generation and Server-Side Rendering

General recommendation:

  • Choose Static Site Generation (SSG) if you're building a blog, documentation portal, marketing website, or any project where content changes infrequently and performance is a top priority.

  • Choose Server-Side Rendering (SSR) if your application depends on personalized experiences, authenticated users, or data that changes continuously.

  • Consider Incremental Static Regeneration (ISR) if you want the speed of static pages while keeping content fresh without rebuilding your entire website.

Keep in mind that modern frameworks such as Next.js, Astro, and Nuxt support hybrid rendering, allowing different pages within the same application to use different strategies. In many cases, the best solution isn't choosing between SSG and SSR—it's combining them where each provides the greatest benefit.

If your website needs...

Recommended rendering

Maximum speed

Static Site Generation

Lowest hosting cost

Static Site Generation

Personalized pages

Server-Side Rendering

Frequently updated content

Server-Side Rendering

Marketing pages

Static Site Generation

User dashboards

Server-Side Rendering

Technical documentation

Static Site Generation

SSG vs SSR: Rendering frameworks for each mode

Framework

Static Site Generation

Server-Side Rendering

Incremental Static Regeneration

Edge Rendering

Next.js

✅ Native

✅ Native

✅ Native

✅ Native

Astro

✅ Native

✅ Supported

⚠️ Via integrations

✅ Supported

Nuxt

✅ Native

✅ Native

⚠️ Route rules/caching

✅ Supported

Hugo

✅ Native

❌ No

❌ No

❌ No

Gatsby

✅ Native

⚠️ Limited

⚠️ Partial

❌ No

While most modern frameworks support multiple rendering strategies, their implementations differ. Next.js offers the broadest support, including Static Site Generation, Server-Side Rendering, Incremental Static Regeneration, and Edge Rendering.

Others, such as Astro, Nuxt, Gatsby, and Hugo, focus on different combinations depending on their architecture and intended use cases.

Your choice of framework should depend not only on rendering capabilities but also on your team's experience, deployment platform, and long-term maintenance requirements.

SSG vs SSR examples

While both rendering strategies have their advantages, their ideal use cases differ significantly.

Website Type

Recommended Approach

Why

Blog

Static Site Generation

Content changes infrequently and benefits from CDN delivery.

Documentation

Static Site Generation

Fast loading times and low hosting costs.

Company website

Static Site Generation

Mostly static pages with strong SEO performance.

Ecommerce

Server-Side Rendering or ISR

Product inventory and pricing change frequently.

SaaS dashboard

Server-Side Rendering

Personalized user data is generated on demand.

News website

Server-Side Rendering

Content is published and updated continuously throughout the day.

These examples demonstrate that the right rendering strategy depends less on the technology itself and more on the type of content your website delivers.

Modern Rendering Strategies: ISR and Edge Rendering

Today, developers don't always have to choose exclusively between Static Site Generation and Server-Side Rendering.

Modern frameworks such as Next.js support hybrid rendering approaches, allowing different pages within the same application to use different rendering methods.

Incremental Static Regeneration (ISR)

Incremental Static Regeneration combines the speed of static websites with the flexibility of dynamic content.

Instead of rebuilding the entire website whenever content changes, ISR regenerates only the pages that need updating. This approach is particularly useful for blogs, ecommerce stores, product catalogs, and documentation websites that publish new content regularly.

Edge Rendering

Edge Rendering executes server-side logic closer to users through globally distributed edge locations.

Compared to traditional Server-Side Rendering, this reduces latency while still allowing pages to display fresh, personalized content. As edge computing continues to evolve, many modern applications use a combination of SSG, SSR, ISR, and Edge Rendering to balance performance, scalability, and flexibility.

Making the right choice: SSG vs. SSR

Ultimately, I wouldn't say there's a war between SSG and SSR. Both are powerful rendering strategies that solve different problems, and the right choice depends entirely on your project's goals.

Modern frameworks have blurred the line between these approaches, making it possible to combine SSG, SSR, and ISR within the same application.

Rather than choosing a single rendering strategy for an entire application, many teams now optimize individual pages based on their performance, personalization, and content freshness requirements.

Both approaches also integrate seamlessly with modern technologies such as a Headless CMS, making content management significantly easier regardless of how your pages are rendered.

And when we talk about modern web architecture, Jamstack remains one of the most popular choices for content-driven websites, proving that static-first development can scale far beyond simple landing pages.

If there's one general recommendation, Static Site Generation is an excellent default choice for blogs, documentation, marketing websites, and many business sites thanks to its outstanding performance, strong SEO potential, low hosting costs, and virtually unlimited scalability. Server-Side Rendering becomes the better option when a project depends on constantly changing data, authenticated experiences, or highly personalized content.

Of course, choosing Static Site Generation doesn't mean giving up on a great editing experience. SSG pipelines like Hugo still need an intuitive content management interface. That's where BCMS is a practical CMS for Hugo, allowing you to manage content efficiently, pull it into your build process, and generate fast static websites without sacrificing editorial workflows.

Luckily, whichever rendering strategy you choose, BCMS works seamlessly with both SSG and SSR, giving development teams the flexibility to adopt the architecture that best fits their project today, and evolve it as requirements change.

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FAQs about SSG and SSR

Here are the answers for the most common question about Static Site Generation and Server-Side Rendering.

Is Static Site Generation better than Server-Side Rendering for SEO?

Not necessarily. Both Static Site Generation (SSG) and Server-Side Rendering (SSR) can achieve excellent SEO results because search engines can crawl fully rendered HTML in both cases. SSG often has an advantage in page speed and Core Web Vitals, while SSR is better suited for websites that need to serve fresh or personalized content on every request.

In most cases, yes. Since SSR generates HTML at request time, it introduces additional server processing before the page is delivered. Static Site Generation serves pre-built HTML directly from a CDN, which typically results in faster response times. However, modern caching strategies and Edge Rendering can significantly reduce the performance gap.

Yes. Modern frameworks such as Next.js, Nuxt, and Astro support hybrid rendering, allowing different pages to use different rendering strategies. For example, you can statically generate your marketing pages while using Server-Side Rendering for authenticated dashboards or personalized user experiences.

Incremental Static Regeneration (ISR) is a hybrid rendering technique that combines the speed of Static Site Generation with the ability to update content without rebuilding the entire website. Instead of regenerating every page during deployment, ISR updates only the pages that have changed, making it an excellent choice for blogs, ecommerce stores, and documentation websites.

It depends on how frequently your content changes. Smaller ecommerce stores with stable product catalogs can work well with Static Site Generation, while larger stores with dynamic pricing, inventory updates, and personalized recommendations often benefit from Server-Side Rendering or Incremental Static Regeneration.

No, but it can simplify content management significantly. A Headless CMS works equally well with Static Site Generation and Server-Side Rendering, allowing content editors to update content independently from the presentation layer while giving developers the flexibility to choose the rendering strategy that best fits each project.

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