Astro Pages 404 After Deploy
Pages work in dev but 404 in prod — almost always a build.format, trailingSlash, or output-mode mismatch with the host. Copy-paste fix path.
#Route 404
Articles tagged with #Route 404
Fix Firebase Hosting 404 on Subpages: SPA, SSG, Subpath
Homepage works but /about or a refreshed /blog/post returns 404 on Firebase Hosting? It's almost always firebase.json rewrites. Verified fixes for SPA, SSG, Astro, and Next.js as of June 2026.