diff --git a/.env.example b/.env.example
index eb33fe6e..b698b29f 100644
--- a/.env.example
+++ b/.env.example
@@ -52,6 +52,8 @@ GLITCHTIP_SECRET_KEY=changeme-generate-a-real-secret
 SENTRY_DSN=
 # VITE_SENTRY_DSN: frontend (SvelteKit) — injected at build time via Vite
 VITE_SENTRY_DSN=
+# Sentry/GlitchTip auth token for source map upload at build time (optional)
+SENTRY_AUTH_TOKEN=
 
 # Production SMTP — uncomment and fill in to send real emails instead of catching them
 # APP_BASE_URL=https://your-domain.example.com
diff --git a/frontend/vite.config.ts b/frontend/vite.config.ts
index cdde2860..4c75bc70 100644
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -1,3 +1,4 @@
+import { sentrySvelteKit } from '@sentry/sveltekit';
 import { paraglideVitePlugin } from '@inlang/paraglide-js';
 import devtoolsJson from 'vite-plugin-devtools-json';
 import tailwindcss from '@tailwindcss/vite';
@@ -33,6 +34,21 @@ export default defineConfig({
 		}
 	},
 	plugins: [
+		sentrySvelteKit({
+			org: 'familienarchiv',
+			project: 'frontend',
+			authToken: process.env.SENTRY_AUTH_TOKEN,
+			sentryUrl: (() => {
+				const dsn = process.env.VITE_SENTRY_DSN;
+				if (!dsn) return undefined;
+				try {
+					return new URL(dsn).origin;
+				} catch {
+					return undefined;
+				}
+			})(),
+			autoUploadSourceMaps: !!process.env.SENTRY_AUTH_TOKEN
+		}),
 		tailwindcss(),
 		sveltekit(),
 		devtoolsJson(),