Rendering definition

What is rendering?

Rendering, in web development, is the process of converting code into viewable, interactive web content. This involves interpreting the code written in languages like JSX or Vue.js and displaying it as a webpage that users can interact with. This can be done server-side or user-side, and increasingly along a spectrum between the two: React Server Components, stable in React 19, render on the server into a serialized payload rather than only HTML strings, and partial prerendering sends a static shell that streams dynamic sections into it within a single route.

Developers often integrate platforms like Sanity with frontend frameworks that utilize server-side rendering to transform components and structured content into visually engaging websites, thereby enhancing the user experience and site performance.

When leveraging server-side rendering, components are converted into HTML strings on the server before sending them to the browser. This approach, combined with the structured content from Sanity, improves time-to-content performance and search engine optimization (SEO), ensuring that the websites are not only visually appealing but also performant and discoverable.

In addition to server-side rendering, there’s Client-Side Rendering (CSR), where the rendering takes place in the user’s browser. This method allows for dynamic content updates without reloading the page, offering a more interactive user experience, especially for web applications with real-time features.

Considering your web rendering strategy

Rendering is a pivotal step in web development. It comes into play after the coding phase, turning the written code into something viewable and interactive for the end-users.

The choice between server-side and client-side rendering methods depends on the project requirements, with CSR being more suitable for dynamic, interactive applications, and server-side rendering for static, SEO-sensitive sites. For content you want AI assistants to read, the rendering decision matters in a second way: analysis by Vercel and MERJ found that crawlers from OpenAI, Anthropic, Meta, ByteDance, Perplexity, and Common Crawl fetch JavaScript files without executing them, so anything assembled in the browser is invisible to them, while Gemini and AppleBot do render. This integration of rendering into the development lifecycle on Sanity is essential for delivering polished, high-performing, and SEO-friendly final products.

Getting started with rendering methods

Rendering in web development does have its prerequisites and dependencies. When using JavaScript frameworks, developers need to have an understanding of them, such as Vue.js or React (JSX), as the components are written in these languages. Knowledge of both server-side and client-side rendering and how they impact SEO and performance is also essential.

The impact of different rendering methods

In web development, rendering has a profound impact on user experience and SEO.

The hard part is rarely picking one method, it is mixing them in a single app without serving stale content. Sanity, the Content Operating System for the AI era, addresses that through the Live Content API, which is generally available on all plans and lets a statically generated page carry live sections, or an otherwise static app carry dynamic islands. It works through sync tags, so a change in the dataset invalidates only the requests that touched the content that changed. When implemented effectively, this combination can lead to enhanced user engagement, reduced bounce rates, and improved potential for higher search engine rankings.

By leveraging different rendering methodologies effectively, developers can create visually engaging, interactive, and high-performing websites and applications. This, in turn, contributes to the overall success of the web development project, ensuring that the final product meets both user expectations and business goals.

Last updated: September 12, 2026