diff --git a/apps/web/project.json b/apps/web/project.json
index 6e4871dcd..548533c67 100644
--- a/apps/web/project.json
+++ b/apps/web/project.json
@@ -22,6 +22,7 @@
                 "polyfills": ["zone.js"],
                 "tsConfig": "apps/web/tsconfig.app.json",
                 "inlineStyleLanguage": "scss",
+                "serviceWorker": "ngsw-config.json",
                 "assets": [
                     "apps/web/src/favicon.ico",
                     "apps/web/src/assets",
@@ -99,12 +100,14 @@
                     ]
                 },
                 "development": {
+                    "serviceWorker": false,
                     "optimization": false,
                     "extractLicenses": false,
                     "sourceMap": true
                 },
                 "electron-e2e": {
                     "baseHref": "./",
+                    "serviceWorker": false,
                     "optimization": false,
                     "extractLicenses": false,
                     "sourceMap": true
@@ -166,9 +169,9 @@
             "continuous": true,
             "executor": "@nx/web:file-server",
             "options": {
-                "buildTarget": "web:build",
+                "buildTarget": "web:build:pwa",
                 "port": 4200,
-                "staticFilePath": "dist/apps/web/browser",
+                "staticFilePath": "dist/apps/web",
                 "spa": true
             }
         }
diff --git a/apps/web/src/app/app.config.ts b/apps/web/src/app/app.config.ts
index eafb9250f..70bb84b3f 100644
--- a/apps/web/src/app/app.config.ts
+++ b/apps/web/src/app/app.config.ts
@@ -40,6 +40,7 @@ import {
 } from './services/portal-navigation-actions.service';
 import { providePortalPlaybackPositions } from './services/portal-playback-positions.service';
 import { PwaService } from './services/pwa.service';
+import { shouldEnableServiceWorker } from './services/runtime-config';
 import { provideWorkspaceShellActions } from './services/workspace-shell-actions.service';
 
 // AoT requires an exported function for factories
@@ -113,7 +114,7 @@ export const appConfig: ApplicationConfig = {
         provideRouterStore(),
         ...(AppConfig.production ? [] : [provideStoreDevtools({ maxAge: 25 })]),
         provideServiceWorker('ngsw-worker.js', {
-            enabled: AppConfig.production && !!window.electron,
+            enabled: shouldEnableServiceWorker(),
             registrationStrategy: 'registerWhenStable:30000',
         }),
         importProvidersFrom(
diff --git a/apps/web/src/app/services/pwa.service.ts b/apps/web/src/app/services/pwa.service.ts
index e231cdba6..18f74b762 100644
--- a/apps/web/src/app/services/pwa.service.ts
+++ b/apps/web/src/app/services/pwa.service.ts
@@ -25,6 +25,7 @@ import {
     logPortalDebugEvent,
     logPortalDebugRequest,
 } from '@iptvnator/portal/shared/util';
+import { getRuntimeBackendUrl } from './runtime-config';
 
 interface PwaXtreamResponse {
     readonly payload?: unknown;
@@ -69,7 +70,7 @@ export class PwaService extends DataService {
     ]);
 
     /** Proxy URL to avoid CORS issues */
-    corsProxyUrl = AppConfig.BACKEND_URL;
+    corsProxyUrl = getRuntimeBackendUrl();
 
     constructor() {
         super();
diff --git a/apps/web/src/app/services/runtime-config.spec.ts b/apps/web/src/app/services/runtime-config.spec.ts
new file mode 100644
index 000000000..3efffcf35
--- /dev/null
+++ b/apps/web/src/app/services/runtime-config.spec.ts
@@ -0,0 +1,39 @@
+import { resolveBackendUrl, shouldEnableServiceWorker } from './runtime-config';
+
+describe('runtime config helpers', () => {
+    it('uses runtime BACKEND_URL when provided', () => {
+        expect(
+            resolveBackendUrl(
+                { BACKEND_URL: '  http://self-hosted.local/api  ' },
+                'https://fallback.example'
+            )
+        ).toBe('http://self-hosted.local/api');
+    });
+
+    it('falls back to the build-time backend URL when runtime config is missing or blank', () => {
+        expect(resolveBackendUrl(undefined, 'https://fallback.example')).toBe(
+            'https://fallback.example'
+        );
+        expect(resolveBackendUrl({}, 'https://fallback.example')).toBe(
+            'https://fallback.example'
+        );
+        expect(
+            resolveBackendUrl(
+                { BACKEND_URL: '   ' },
+                'https://fallback.example'
+            )
+        ).toBe('https://fallback.example');
+    });
+
+    it('enables service worker only for production builds with browser support', () => {
+        expect(
+            shouldEnableServiceWorker(true, {
+                serviceWorker: {},
+            } as Navigator)
+        ).toBe(true);
+        expect(
+            shouldEnableServiceWorker(false, { serviceWorker: {} } as Navigator)
+        ).toBe(false);
+        expect(shouldEnableServiceWorker(true, {} as Navigator)).toBe(false);
+    });
+});
diff --git a/apps/web/src/app/services/runtime-config.ts b/apps/web/src/app/services/runtime-config.ts
new file mode 100644
index 000000000..2a542a9b0
--- /dev/null
+++ b/apps/web/src/app/services/runtime-config.ts
@@ -0,0 +1,27 @@
+import { AppConfig } from '../../environments/environment';
+
+export interface IptvnatorRuntimeConfig {
+    readonly BACKEND_URL?: string;
+}
+
+export function resolveBackendUrl(
+    runtimeConfig: IptvnatorRuntimeConfig | undefined,
+    fallbackUrl: string
+): string {
+    const runtimeUrl = runtimeConfig?.BACKEND_URL?.trim();
+    return runtimeUrl || fallbackUrl;
+}
+
+export function getRuntimeBackendUrl(): string {
+    return resolveBackendUrl(
+        globalThis.window?.__IPTVNATOR_CONFIG__,
+        AppConfig.BACKEND_URL
+    );
+}
+
+export function shouldEnableServiceWorker(
+    production = AppConfig.production,
+    navigatorRef: Navigator | undefined = globalThis.navigator
+): boolean {
+    return production && !!navigatorRef && 'serviceWorker' in navigatorRef;
+}
diff --git a/apps/web/src/assets/app-config.js b/apps/web/src/assets/app-config.js
new file mode 100644
index 000000000..bc466029f
--- /dev/null
+++ b/apps/web/src/assets/app-config.js
@@ -0,0 +1 @@
+window.__IPTVNATOR_CONFIG__ = window.__IPTVNATOR_CONFIG__ || {};
diff --git a/apps/web/src/index.html b/apps/web/src/index.html
index ef7b41fe9..21cd9eeea 100644
--- a/apps/web/src/index.html
+++ b/apps/web/src/index.html
@@ -20,6 +20,7 @@
         <link rel="manifest" href="manifest.webmanifest" />
         <link rel="apple-touch-icon" href="assets/icons/apple-touch-icon.png" />
         <link rel="icon" type="image/x-icon" href="assets/icons/favicon.ico" />
+        <script src="assets/app-config.js"></script>
         <style>
             /* Inline splash — paints immediately while the JS bundle and the
                styles.css (~300KB) are still downloading and Angular is
@@ -68,11 +69,7 @@
         </style>
     </head>
     <body class="mat-app-background">
-        <div
-            id="initial-splash"
-            role="status"
-            aria-label="Loading IPTVnator"
-        >
+        <div id="initial-splash" role="status" aria-label="Loading IPTVnator">
             <span class="splash-mark">IPTVnator</span>
             <span class="splash-spinner" aria-hidden="true"></span>
         </div>
diff --git a/global.d.ts b/global.d.ts
index 7e40923f2..e56f47274 100644
--- a/global.d.ts
+++ b/global.d.ts
@@ -37,6 +37,9 @@ declare global {
     }
 
     interface Window {
+        __IPTVNATOR_CONFIG__?: {
+            BACKEND_URL?: string;
+        };
         electron: {
             onPlaylistRefreshEvent?: (
                 callback: (data: PlaylistRefreshEvent) => void
diff --git a/ngsw-config.json b/ngsw-config.json
index f8bf2102e..e997fdbf5 100644
--- a/ngsw-config.json
+++ b/ngsw-config.json
@@ -1,30 +1,31 @@
 {
-  "$schema": "./node_modules/@angular/service-worker/config/schema.json",
-  "index": "/index.html",
-  "assetGroups": [
-    {
-      "name": "app",
-      "installMode": "prefetch",
-      "resources": {
-        "files": [
-          "/favicon.ico",
-          "/index.html",
-          "/manifest.webmanifest",
-          "/*.css",
-          "/*.js"
-        ]
-      }
-    },
-    {
-      "name": "assets",
-      "installMode": "lazy",
-      "updateMode": "prefetch",
-      "resources": {
-        "files": [
-          "/assets/**",
-          "/*.(svg|cur|jpg|jpeg|png|apng|webp|avif|gif|otf|ttf|woff|woff2)"
-        ]
-      }
-    }
-  ]
+    "$schema": "./node_modules/@angular/service-worker/config/schema.json",
+    "index": "/index.html",
+    "assetGroups": [
+        {
+            "name": "app",
+            "installMode": "prefetch",
+            "resources": {
+                "files": [
+                    "/favicon.ico",
+                    "/index.html",
+                    "/manifest.webmanifest",
+                    "/*.css",
+                    "/*.js"
+                ]
+            }
+        },
+        {
+            "name": "assets",
+            "installMode": "lazy",
+            "updateMode": "prefetch",
+            "resources": {
+                "files": [
+                    "/assets/**",
+                    "!/assets/app-config.js",
+                    "/*.(svg|cur|jpg|jpeg|png|apng|webp|avif|gif|otf|ttf|woff|woff2)"
+                ]
+            }
+        }
+    ]
 }