What Is a Web Framework?

What it applies to

Complex web applications, SPAs (Single-Page Applications), and projects where the overhead of a framework is justified by the scale and interactivity requirements.

How a front-end framework works

• The framework provides a project structure, file conventions, and a build system (typically Vite or Webpack) that compiles your code into optimised files for the browser.
• You write UI as components — self-contained units of HTML, CSS, and JavaScript logic — which the framework assembles into the full page.
• The framework manages state — the data that determines what the UI displays — and re-renders only the parts of the page that change when state updates.
• Routing, data fetching, form handling, and animation are provided by the framework or its ecosystem of plugins, eliminating the need to build these from scratch.

When to use a framework vs Webflow

• Use Webflow: Marketing sites, landing pages, blogs, portfolio sites — any content-led site where a visual build is faster and more maintainable.
• Use a framework (Next.js, Nuxt, SvelteKit): Complex interactive applications, authenticated user areas, real-time data dashboards, or projects with requirements Webflow cannot support natively.
• Hybrid: Webflow for the marketing site + a React/Next.js app for the product — connected via subdomain (app.yoursite.com).