# SPA vs MPA

URL: https://softwaredictionary.org/compare/spa-vs-mpa
Last updated: 2026-10-06

In short: An SPA loads one page and redraws it with JavaScript as you navigate; an MPA loads a new HTML page from the server on every link or form submission.

## What is the difference between an SPA and an MPA?

A multi-page application (MPA) is the web's classic model: every page is its own HTML document, and each link or form submission makes the browser request a new page from the server and replace the old one. A single-page application (SPA) loads one HTML shell and a JavaScript bundle once; after that, client-side routing changes the URL with the History API, fetches data, usually as `JSON`, and redraws only the part of the page that changes.

The difference is where navigation happens, and it shapes the trade-offs. An MPA's pages arrive as complete HTML with real URLs, so they show quickly, work without JavaScript, are easy for search engines to read and are simple to cache; the cost is a full reload on each navigation, which loses anything kept only in the page's memory. An SPA feels fluid once loaded and keeps state, such as a playing video or a half-written message, across views, but the first load waits for a large bundle, and SEO needs server rendering or prerendering.

The line has blurred from both sides. Frameworks such as Next.js, Nuxt and SvelteKit render the first page on the server like an MPA and then navigate like an SPA, while Astro builds MPAs with small interactive islands. Browsers have narrowed the MPA's gap too: cross-document view transitions animate between pages, the back/forward cache restores recent pages instantly, and libraries such as htmx and Turbo swap in fresh HTML from the server without a full reload.

A common misconception is that an SPA is always faster. It is faster between views but usually slower to show the first content, and many sites, such as blogs, stores and documentation, are read one page at a time. Another is that an MPA means static pages; its HTML can be generated on every request and personalized for each user.

| Aspect | SPA | MPA |
| --- | --- | --- |
| Navigation | JavaScript redraws the page; no full reload | The browser loads a new HTML document from the server |
| First load | Slower: the JavaScript bundle must download and run | Fast: the server sends ready HTML |
| Moving between views | Fast and smooth; only data is fetched | A full page load, softened by view transitions and caching |
| State across pages | Kept in memory, such as a playing video or a draft | Lost on each load unless stored or sent to the server |
| SEO | Needs server rendering or prerendering to be reliable | Simple: every page is complete HTML with its own URL |
| Without JavaScript | Usually shows an empty shell | Pages, links and forms still work |
| Typical tools | React, Vue, Angular or Svelte with a client-side router | WordPress, Django, Rails, Laravel, Astro |
| Best for | Long sessions on one screen: editors, dashboards, mail clients | Content sites, stores, documentation, forms |

## Choose SPA when

- Users stay for long sessions and move between many views, as in a dashboard or editor.
- State must survive navigation, such as a playing track or an unsent message.
- The app sits behind a login, so search engines don't need to read it.
- Interactions should feel like a native app, with no reloads.

## Choose MPA when

- Most visitors read a page or two, as on a blog, store or documentation site.
- Search visibility and a fast first view matter most.
- Pages should work without JavaScript or on slow devices.
- You want simple server code, caching and hosting.

## Frequently asked questions

**Is an SPA better than an MPA?**

Neither is better in general. SPAs suit apps where users stay on one screen and interact a lot; MPAs suit content that people find through search and read page by page. Hybrid frameworks let one site use both.

**Are SPAs bad for SEO?**

Not necessarily, but an SPA that sends an almost empty HTML shell relies on crawlers running its JavaScript, and not all of them do. Rendering the first view on the server or at build time gives search engines and AI crawlers the full content.

**Is Next.js an SPA or an MPA?**

Both, in a way. It renders each page on the server or at build time, like an MPA, so the first view arrives as HTML, and then handles later navigation in the browser like an SPA.

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