Digital Marketing Blog

In the world of online marketing, there are many terms that are often used but are not always easy to understand. One of these terms is “rendering”. In this blog post, you’ll learn everything you need to know about rendering and why it’s so important for your online marketing.

What is rendering?

Rendering refers to the process by which a computer converts raw data into a visually displayable format. In the context of web design, this means that HTML, CSS and JavaScript are converted into a visible and interactive web page that users can see in their browser. There are different types of rendering that are used for different purposes and platforms.

Types of rendering

There are basically three different types of rendering: client-side rendering (CSR), server-side rendering (SSR) and static site generation (SSG). How these rendering types differ and what advantages they bring is discussed here.

Client-Side Rendering (CSR)

With client-side rendering (CSR), all data processing is carried out in the user’s browser. This means that the browser retrieves the HTML file from the server and then executes the JavaScript to generate the final display of the page. This can increase the loading time on the first visit to the page, as the browser first has to download and execute the scripts. However, the advantage of CSR is that navigation between pages is very fast after the initial loading, as only the necessary data is loaded.

Server-Side Rendering (SSR)

With server-side rendering (SSR), the data is processed on the server before the finished HTML page is sent to the user’s browser. This often leads to faster loading times on the first page, as the browser does not have to wait for JavaScript to be executed. SSR is particularly useful for SEO as search engine bots can see the full page content immediately.

Static Site Generation (SSG)

Static Site Generation (SSG) is a method in which websites are generated in advance and saved as static files. These files are then delivered directly to the server when requests are made. SSG combines the advantages of CSR and SSR, as the pages are loaded very quickly and can still offer dynamic content.

Why is rendering important for SEO?

Search engines such as Google attach great importance to how quickly and efficiently a website loads. A faster page provides a better user experience and is therefore favored by search engines. Here are some reasons why rendering is so important for search engine optimization (SEO):

Loading speed

The loading speed of a website has a direct influence on the ranking in search engines. Slow websites have higher bounce rates, which sends negative signals to search engines. With effective rendering, you can optimize the loading times of your website and thus improve the user experience.


For a successful SEO strategy, it is important that search engine bots such as Google crawler can index your website completely and correctly. With CSR, bots may have difficulty capturing all the content as it is generated by JavaScript. With SSR or SSG, you ensure that all content is available immediately and can therefore be indexed better.

User experience

A good user experience is not only important for the users themselves, but also a decisive factor for SEO. Search engines rank websites higher that offer a positive user experience. Through optimized rendering, you ensure that your site loads quickly, works smoothly and satisfies users.

How can you optimize the rendering of your website?

Here are some tips on how you can optimize the rendering of your website:

Use server-side rendering

If you have a dynamic website, you should consider server-side rendering. This means that the HTML code is already generated on the server, which leads to faster loading times and better indexability.

Rely on Static Site Generation

If your website consists mainly of static content, Static Site Generation is an excellent choice. It combines the advantages of fast loading times and good indexability.

Lazy Loading

Implement lazy loading for images and other media content. The content is only loaded when it is actually needed, which reduces the initial loading time.

Minify and combine files

Modify your HTML, CSS and JavaScript files and combine them to reduce the number of HTTP requests. This speeds up the loading process and improves performance.

Use a Content Delivery Network (CDN)

A Content Delivery Network (CDN) distributes your content to several servers worldwide, which reduces loading times for users in different regions.


Rendering is a crucial factor for the performance and SEO of your website. By understanding and applying the different rendering techniques, you can optimize loading times, improve indexability and ultimately provide a better user experience. Whether client-side rendering, server-side rendering or static site generation – each method has its advantages and can be the right choice depending on the use case.

Get in touch with us to get the best out of your website and move up the search engine rankings. Rendering may seem complex at first, but with the right help and the right tools, together we can take your website to the next level.

Frequently Asked Questions

Questions & answers about rendering

What is the difference between client-side rendering and server-side rendering?

Client-side rendering (CSR) and server-side rendering (SSR) are two different approaches to rendering websites:

  • Client-Side Rendering (CSR): With CSR, the HTML code is sent from the server to the browser, but most of the data processing and the creation of the final web page is done in the browser by JavaScript. This can lead to longer loading times when the page is first loaded, but navigation and reloading of content is often faster afterwards.
  • Server-Side Rendering (SSR): With SSR, the HTML code is already generated on the server and the finished website is sent to the browser. This usually results in faster loading times when loading for the first time, as the browser does not have to wait for JavaScript to be executed. SSR is particularly beneficial for SEO, as search engine bots can immediately capture the full content of the page.

Rendering has a significant impact on the SEO of your website due to the following factors:

  • Loading speed: Faster loading times improve the user experience and are preferred by search engines. Optimized rendering can significantly improve the loading speed.
  • Indexability: Websites created using server-side rendering or static site generation are easier for search engine bots to index, as the full content is immediately available. This can lead to better visibility in search results.
  • User experience: A positive user experience, achieved through fast and smooth rendering, can reduce the bounce rate and increase dwell time. These behavioral signals are also viewed positively by search engines and can improve your ranking.

Choosing the right rendering technique depends on the specific requirements and goals of your website:

  • Client-Side Rendering (CSR): Ideal for websites with many interactive elements and dynamic content, where fast page changes after initial loading are important.
  • Server-Side Rendering (SSR): Better suited for websites where the initial loading speed and SEO have a high priority, such as blogs, news sites or e-commerce websites with many products.
  • Static Site Generation (SSG): Perfect for websites with mainly static content, such as company pages, documentation pages or blogs with less frequently updated content. SSG offers fast loading times and good indexability with the option of integrating dynamic content.

Each technique has its own advantages and disadvantages, and often a combination of techniques can be the best solution to optimally meet the requirements of your website.

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Written by:

Senior Consultant

Mario Glashauser is an experienced expert in the field of search engine optimization and analytics. He supports both national and international SEO clients in expanding their digital visibility and online presence.

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