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Glossary

What Is Single-Page Application (SPA)?

A single-page application (SPA) is a web application that loads a single HTML document and dynamically updates content using JavaScript — without reloading the full page. As users navigate between sections, only the required data is fetched and rendered in the browser. Examples include Gmail, Google Maps, and many React or Vue.js apps.

How SPAs differ from traditional websites

Traditional (multi-page) websites load a complete new HTML page for each URL. SPAs load once and update the DOM dynamically using JavaScript. SPAs feel faster to the user (no full page refreshes) but require more JavaScript to run. Frameworks like React, Vue, and Angular are commonly used to build SPAs.

SPA advantages and disadvantages

Advantages: fast, app-like user experience; no full page reloads; rich interactivity; works well as a PWA (Progressive Web App). Disadvantages: initial load is slower (more JS to download); SEO is harder (Google must execute JS to see content); browser back/forward button behaviour requires careful handling; harder to implement server-side rendering without a framework like Next.js.

SPAs and SEO

SPAs present SEO challenges because content is rendered by JavaScript, not server-side HTML. Googlebot does execute JavaScript, but it may be slower to index JS-rendered content. The solution: server-side rendering (SSR) or static site generation (SSG) using frameworks like Next.js, Nuxt, or SvelteKit renders HTML on the server before sending it to the browser — combining SPA interactivity with SEO-friendly HTML.

Single-Page Application (SPA) & Canvas Builder

Canvas Builder generates static HTML files — not SPAs. This is intentional: static HTML is faster to load, easier to host, better for SEO, and simpler for developers and clients to manage.

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Frequently Asked Questions

Is a single-page application the same as a one-page website?
No. A one-page website is a marketing site with all content on a single scrollable page. A single-page application is a technical architecture where JavaScript dynamically updates content across multiple 'routes' without reloading the full page.
Does Canvas Builder create SPAs?
No — Canvas Builder generates standard multi-page HTML files. These are traditional, server-renderable HTML pages — which is actually better for SEO, load speed, and simplicity for marketing sites and client handoffs.