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Add Pure SPA section to SPA Mode page #5139

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add Pure SPA section to SPA Mode page
BennyHinrichs Sep 12, 2025
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BennyHinrichs Sep 12, 2025
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4 changes: 4 additions & 0 deletions docs/start/framework/react/spa-mode.md
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Expand Up @@ -22,6 +22,10 @@ For applications that do not require SSR for either SEO, crawlers, or performanc
- **Slower time to full content** - Time to full content is longer since all JS must download and execute before anything below the shell can be rendered.
- **Less SEO friendly** - Robots, crawlers and link unfurlers _may_ have a harder time indexing your application unless they are configured to execute JS and your application can render within a reasonable amount of time.

## Pure SPA

SPA mode does not mean there is no frontend server; it's just a different way for the client to interact with your frontend (i.e., TanStack Start) server. If you need to do an SPA with no frontend server, then [TanStack Router](https://tanstack.com/router/latest) will be a better fit for your project.

## How does it work?

After enabling the SPA mode, running a Start build will have an additional prerendering step afterwards to generate the shell. This is done by:
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