diff --git a/source/assets/re-nav.png b/source/assets/re-nav.png
new file mode 100644
index 0000000..9dacba0
Binary files /dev/null and b/source/assets/re-nav.png differ
diff --git a/source/assets/re-nav.svg b/source/assets/re-nav.svg
new file mode 100644
index 0000000..f7d5700
--- /dev/null
+++ b/source/assets/re-nav.svg
@@ -0,0 +1,16 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="128" height="128" viewBox="0 0 100 100">
+  <rect fill="#E6DEFF" width="100" height="100" />
+
+  <text
+    fill="#1F1731"
+    font-family="Inter"
+    font-size="75"
+    font-weight="900"
+    x="51"
+    y="75"
+    alignment-baseline="middle"
+    text-anchor="middle"
+  >
+    ↩
+  </text>
+</svg>
diff --git a/source/manifest.ts b/source/manifest.ts
new file mode 100644
index 0000000..5f123d1
--- /dev/null
+++ b/source/manifest.ts
@@ -0,0 +1,45 @@
+/* eslint-disable @typescript-eslint/naming-convention */
+
+export default function createManifest(
+  target: string,
+): Record<string, unknown> {
+  const manifest: Record<string, unknown> = {
+    name: 're-nav',
+    description: 'Navigation redirects for the masses.',
+    version: '0.1.0',
+    permissions: ['storage', 'webNavigation'],
+    options_ui: {
+      page: 'options/index.html',
+      open_in_tab: true,
+    },
+  };
+
+  const icons = {
+    128: 'assets/re-nav.png',
+  };
+
+  manifest.icons = icons;
+
+  const browserAction = {
+    default_icon: icons,
+  };
+
+  const backgroundScript = 'background-scripts/initialize.ts';
+
+  if (target === 'chromium') {
+    manifest.manifest_version = 3;
+    manifest.action = browserAction;
+    manifest.background = {
+      service_worker: backgroundScript,
+      type: 'module',
+    };
+  } else {
+    manifest.manifest_version = 2;
+    manifest.browser_action = browserAction;
+    manifest.background = {
+      scripts: [backgroundScript],
+    };
+  }
+
+  return manifest;
+}
diff --git a/source/types.d.ts b/source/types.d.ts
new file mode 100644
index 0000000..17d41e9
--- /dev/null
+++ b/source/types.d.ts
@@ -0,0 +1,20 @@
+import {html} from 'htm/preact';
+
+declare global {
+  // See Vite documentation for `import.meta.env` usage.
+  // https://vitejs.dev/guide/env-and-mode.html
+
+  interface ImportMeta {
+    readonly env: ImportMetaEnv;
+  }
+
+  interface ImportMetaEnv {
+    readonly BASE_URL: string;
+    readonly DEV: boolean;
+    readonly MODE: string;
+    readonly PROD: boolean;
+    readonly VITE_BROWSER: 'chromium' | 'firefox';
+  }
+
+  type HtmComponent = ReturnType<typeof html>;
+}