Building a Visual Website Builder with React: The Architecture Behind Webruno’s Page Editor
Building a visual website builder looks simple from the outside. Users drag a section, change some text, upload an image, click save, and expect a website to appear. The reality is much harder. A website builder is not just a frontend editor. It is a system that needs to store layouts, manage components, handle responsive behavior, support different business types, and render thousands of…
Creating a visual website builder with React requires careful consideration of various architectural elements. The first challenge is deciding how to store the website data. Storing plain HTML generates numerous issues such as difficulty in editing, difficulty in reusing components, and problems with responsive design and AI generation. Instead, the best approach is to store a structured representation of the page. This structure is a JSON-like object containing elements like type, properties, and children.
A crucial component in this architecture is the component registry. Each component has a unique identifier, default properties, editable settings, and rendering logic. When the page loads, the renderer interprets this structure and maps each component to its React implementation. This approach allows for adding new components without needing to modify existing websites.
Responsive design is another significant challenge. Each component can behave differently on various devices, requiring different font sizes, spacing, alignment, dimensions, cropping, and positioning. To address this, we handle responsive settings as part of the component configuration, rather than writing CSS for every page.
Dragging and dropping elements is relatively easy, but maintaining a valid page structure, handling nested components, preventing broken layouts, and supporting old versions are much more complex. The system needs rules to prevent users from creating layouts that cannot be rendered correctly.
Versioning and data migration are essential for a SaaS product. Components evolve over time, and changes in structure can break old websites. Therefore, a migration strategy is required to transition from old to new data structures smoothly.
AI can significantly enhance the website building process. Instead of generating complex HTML and CSS, we can ask AI to create a website structure using available components. For instance, AI could suggest a layout for a restaurant website, and the platform would then build the actual page using validated components.
In summary, building a visual website builder requires balancing flexibility and control. Too much freedom leads to unstable websites, while too many restrictions create a frustrating editor. The best systems offer users creative freedom while maintaining technical boundaries. This architecture involves complex systems such as data models, rendering systems, component architecture, migrations, and scalability, which are often hidden from the user.
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