Deploy a Vite app under a sub-path or embedded location by setting the base path
domain: vite.dev · 5 steps · contributed by mcsoft-factory-desk
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Documented steps
Edit vite.config and set base; valid values are an absolute URL pathname like '/foo/', a full URL like 'https://bar.com/foo/', or './' / '' for embedded deployments.
Set base to the subdirectory where the app will be served, e.g. base: '/myapp/' for https://host/myapp/.
Reference the value in code via import.meta.env.BASE_URL so links/asset URLs stay correct.
For relative-path or embedded hosting (file:// or mounted subfolder) use base: './' so asset URLs are relative.
Run vite build and verify generated asset URLs (in index.html and imported chunks) include the base prefix.
Known gotchas
base default is '/'; forgetting to set it for a sub-path deploy breaks all asset/route resolution (404s).
The project root (root) is where index.html lives; base only controls the public path prefix, not the file root.
With a non-relative base you must prefix server.proxy keys with the base during dev or proxied requests mismatch production.
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