diff --git a/.browserslistrc b/.browserslistrc
index 284e01ff..d8e92c76 100644
--- a/.browserslistrc
+++ b/.browserslistrc
@@ -17,7 +17,7 @@
 # Generated data.
 # <generated:start>
 
-# Last generated Mar 22, 2024 7:11 AM UTC.
+# Last generated Mar 22, 2024 7:58 AM UTC.
 
 [production]
 node >= 20.9.0
diff --git a/.dockerignore b/.dockerignore
index f75cd1a8..81f36dd6 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -17,7 +17,7 @@
 # Generated data.
 # <generated:start>
 
-# Last generated Mar 22, 2024 7:11 AM UTC.
+# Last generated Mar 22, 2024 7:58 AM UTC.
 
 # Locals
 
diff --git a/.env.vault b/.env.vault
index 386defa5..e473e13b 100644
--- a/.env.vault
+++ b/.env.vault
@@ -8,12 +8,12 @@ DOTENV_VAULT_MAIN="7GW98NfL4hM4N6HbfeDXCKreVxKvcVPupFRnZ8XJ+pomaQ=="
 DOTENV_VAULT_MAIN_VERSION=1
 
 # dev
-DOTENV_VAULT_DEV="a+hP6nwf4CqONa9HrqVRAS9dngtgA6QHT3l5D2DEHArCV934o/YKSUa7mJ4cah+U/cRf4bGUGgblBQqQW9vIWtMgDOOQA9E8Mf6NBX79DKJZOwODwrIYBfRHH6KcrD+NNOhOmSeJ5q+tado5J5Dyq3sBkWiQ7PkAgvEeMUnociUlfQSu+tXqXUJwm0zaY2PmCwanWeZMLFddlZTETwa+BvkPaOPM29XfeyJD/tUs9LRuqs7OKD7Qy+hM7ku2Nd3AIA=="
-DOTENV_VAULT_DEV_VERSION=467
+DOTENV_VAULT_DEV="kSpcS87N4T+DP0j67/NEgV2VkFKSfZ0wtuR/JNYOGbnmYwCwIuqLefBaluLkYzZcwDMzh/GdbnM0fhxm8IpxeNI/wCR00nnCApNOt9nJN6aXA/XF8ebczvOvVW0k1FdH7qAVd/6+DtjO5+RH2/hX3cXhy9f9bZ4t1PT4J/c970H5xgaulwjwPOUY4X/APedGp0hRuLfqsDpkULk6yHwngyGvmJBQEwrOh6dEZqLJP4xleavS7ErfXSbF5oh861jy1Q=="
+DOTENV_VAULT_DEV_VERSION=469
 
 # ci
-DOTENV_VAULT_CI="Qf4313mFcLvwmOisZB1rijt+IuiWsVk9z8k74kBCRWWLdfqRvNKZBSOWjzK9OuCwByPvgINYL4+8qr752as6FFMGFtXpLlOewG36R7JJv+caYksGYy/x0YJIEFGyIPHf1hlat/C2MVp1l+HF/T0bG9laB0yDKcKc84E10HNVHw=="
-DOTENV_VAULT_CI_VERSION=467
+DOTENV_VAULT_CI="tSs3/1qDGDC5N/LUwefxIQMn/m/K+HOVxRhGsIegmRtVYLKU+TjrjyRhwyDoKjlNqZaOoihxsLbFqPL2Pj4ZaiuokBIbHzv7sgg6kqKm21nlAnYZ/cKfhAIf8iIe7Qud6fP0gHJ+3d9a83LgRlh0dvMO4D8CJGLspEbNjHgpIg=="
+DOTENV_VAULT_CI_VERSION=469
 
 # stage
 DOTENV_VAULT_STAGE="aRP8su2YV4jZu3w1HZ/SLaots0IwJDFw75TCpvXEFeNp7tw="
diff --git a/.gitattributes b/.gitattributes
index 36ec66e3..0f82d93a 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -17,7 +17,7 @@
 # Generated data.
 # <generated:start>
 
-# Last generated Mar 22, 2024 7:11 AM UTC.
+# Last generated Mar 22, 2024 7:58 AM UTC.
 
 # Default
 
diff --git a/.gitignore b/.gitignore
index d0f926a7..fada611c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,7 +17,7 @@
 # Generated data.
 # <generated:start>
 
-# Last generated Mar 22, 2024 7:11 AM UTC.
+# Last generated Mar 22, 2024 7:58 AM UTC.
 
 # Locals
 
diff --git a/.npmignore b/.npmignore
index 8b98a286..050051f8 100644
--- a/.npmignore
+++ b/.npmignore
@@ -25,7 +25,7 @@
 # Generated data.
 # <generated:start>
 
-# Last generated Mar 22, 2024 7:11 AM UTC.
+# Last generated Mar 22, 2024 7:58 AM UTC.
 
 # Locals
 
diff --git a/.prettierignore b/.prettierignore
index 95af35f2..bacdb7c4 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -17,7 +17,7 @@
 # Generated data.
 # <generated:start>
 
-# Last generated Mar 22, 2024 7:11 AM UTC.
+# Last generated Mar 22, 2024 7:58 AM UTC.
 
 # Packages
 
diff --git a/.vscode/settings.json b/.vscode/settings.json
index e38cbb4b..d8ff2c04 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -7,7 +7,7 @@
  * @note This entire file will be updated automatically.
  * @note Instead of editing here, please review `./settings.mjs`.
  *
- * Last generated using `./settings.mjs` Mar 22, 2024 7:11 AM UTC.
+ * Last generated using `./settings.mjs` Mar 22, 2024 7:58 AM UTC.
  */
 {
     "editor.formatOnType": false,
diff --git a/.vscodeignore b/.vscodeignore
index 594acae8..3c0e4d3c 100644
--- a/.vscodeignore
+++ b/.vscodeignore
@@ -17,7 +17,7 @@
 # Generated data.
 # <generated:start>
 
-# Last generated Mar 22, 2024 7:11 AM UTC.
+# Last generated Mar 22, 2024 7:58 AM UTC.
 
 # Locals
 
diff --git a/package-lock.json b/package-lock.json
index 138843fc..8718c5e1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
     "name": "@clevercanyon/utilities",
-    "version": "1.0.919",
+    "version": "1.0.920",
     "lockfileVersion": 3,
     "requires": true,
     "packages": {
         "": {
             "name": "@clevercanyon/utilities",
-            "version": "1.0.919",
+            "version": "1.0.920",
             "cpu": [
                 "x64",
                 "arm64"
@@ -956,9 +956,9 @@
             }
         },
         "node_modules/@clevercanyon/utilities": {
-            "version": "1.0.919",
-            "resolved": "https://registry.npmjs.org/@clevercanyon/utilities/-/utilities-1.0.919.tgz",
-            "integrity": "sha512-sz/AOFGhNEVDEDEYWnSaxIghmD2c5bjPAjKbcbOcebRinRkE+PqNih+7sm7YV0/INhBg2r1EFTxJuDdqf+/b3A==",
+            "version": "1.0.920",
+            "resolved": "https://registry.npmjs.org/@clevercanyon/utilities/-/utilities-1.0.920.tgz",
+            "integrity": "sha512-oTQvebpzop49UCO2v+KQAUXjjq1U1CxuK6rkR090gI7S1Yf2uy6jwQw+ZhemKCPolLpt9rSZTS588GKXl/rHbQ==",
             "cpu": [
                 "x64",
                 "arm64"
diff --git a/package.json b/package.json
index b4abfcd9..8d68be60 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
     "publishConfig": {
         "access": "public"
     },
-    "version": "1.0.920",
+    "version": "1.0.921",
     "license": "GPL-3.0-or-later",
     "name": "@clevercanyon/utilities",
     "description": "Utilities for JavaScript apps running in any environment.",
diff --git a/src/app.ts b/src/app.ts
index f28096e3..7b485931 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -11,6 +11,8 @@ import { $brand, $env, $obj, $str, $time, $url, $user, type $type } from '#index
  * Defines types.
  */
 export type BaseURLOptions = { parsed?: boolean };
+export type RootR2OriginURLOptions = { parsed?: boolean };
+export type RootR2BaseURLOptions = { parsed?: boolean };
 export type R2OriginURLOptions = { parsed?: boolean };
 export type R2BaseURLOptions = { parsed?: boolean };
 
@@ -115,6 +117,62 @@ export const baseURL = $fnꓺmemo(
     },
 );
 
+/**
+ * Checks if environment has an app’s root R2 origin URL.
+ *
+ * @returns True if environment has an app’s root R2 origin URL.
+ */
+export const hasRootR2OriginURL = $fnꓺmemo((): boolean => {
+    return $env.get('APP_ROOT_R2_ORIGIN_URL') ? true : false;
+});
+
+/**
+ * Gets current app’s root R2 origin URL.
+ *
+ * @param   options Options (all optional); {@see RootR2OriginURLOptions}.
+ *
+ * @returns         Current app’s root R2 origin URL.
+ *
+ * @note Unable to deep freeze a URL, but we would do so if possible.
+ *       For now, we just declare it readonly using a TypeScript return type.
+ */
+export const rootR2OriginURL = $fnꓺmemo(
+    { deep: true, maxSize: 2 },
+    <Options extends RootR2OriginURLOptions>(options?: Options): Options extends RootR2OriginURLOptions & { parsed: true } ? $type.ReadonlyDeep<$type.URL> : string => {
+        const opts = $obj.defaults({}, options || {}, { parsed: false }) as Required<RootR2OriginURLOptions>,
+            value = $str.rTrim($env.get('APP_ROOT_R2_ORIGIN_URL', { type: 'string', require: true }), '/');
+        return (opts.parsed ? $url.parse(value) : value) as ReturnType<typeof rootR2OriginURL<Options>>;
+    },
+);
+
+/**
+ * Checks if environment has an app’s root R2 base URL.
+ *
+ * @returns True if environment has an app’s root R2 base URL.
+ */
+export const hasRootR2BaseURL = $fnꓺmemo((): boolean => {
+    return $env.get('APP_ROOT_R2_BASE_URL') || hasRootR2OriginURL() ? true : false;
+});
+
+/**
+ * Gets current app’s root R2 base URL.
+ *
+ * @param   options Options (all optional); {@see RootR2BaseURLOptions}.
+ *
+ * @returns         Current app’s root R2 base URL.
+ *
+ * @note Unable to deep freeze a URL, but we would do so if possible.
+ *       For now, we just declare it readonly using a TypeScript return type.
+ */
+export const rootR2BaseURL = $fnꓺmemo(
+    { deep: true, maxSize: 2 },
+    <Options extends RootR2BaseURLOptions>(options?: Options): Options extends RootR2BaseURLOptions & { parsed: true } ? $type.ReadonlyDeep<$type.URL> : string => {
+        const opts = $obj.defaults({}, options || {}, { parsed: false }) as Required<RootR2BaseURLOptions>,
+            value = $env.get('APP_ROOT_R2_BASE_URL', { type: 'string', default: '' }) || rootR2OriginURL() + '/app/' + pkgSlug() + '/';
+        return (opts.parsed ? $url.parse(value) : value) as ReturnType<typeof rootR2BaseURL<Options>>;
+    },
+);
+
 /**
  * Checks if environment has an app’s R2 origin URL.
  *
diff --git a/src/tests/brand/index.ts b/src/tests/brand/index.ts
index f3f33b6e..90e87c3e 100644
--- a/src/tests/brand/index.ts
+++ b/src/tests/brand/index.ts
@@ -7,6 +7,8 @@ import { afterAll, beforeAll, describe, expect, test } from 'vitest';
 
 const __origAppPkgName__ = $env.get('APP_PKG_NAME', { type: 'unknown' });
 const __origAppBaseURL__ = $env.get('APP_BASE_URL', { type: 'unknown' });
+const __origAppRootR2OriginURL__ = $env.get('APP_ROOT_R2_ORIGIN_URL', { type: 'unknown' });
+const __origAppRootR2BaseURL__ = $env.get('APP_ROOT_R2_BASE_URL', { type: 'unknown' });
 const __origAppR2OriginURL__ = $env.get('APP_R2_ORIGIN_URL', { type: 'unknown' });
 const __origAppR2BaseURL__ = $env.get('APP_R2_BASE_URL', { type: 'unknown' });
 const __origAppBrandProps__ = $env.get('APP_BRAND_PROPS', { type: 'unknown' });
@@ -16,6 +18,8 @@ describe('$brand', async () => {
     beforeAll(async () => {
         $env.set('APP_PKG_NAME', '@clevercanyon/x.tld');
         $env.set('APP_BASE_URL', 'https://x.tld/base/');
+        $env.set('APP_ROOT_R2_ORIGIN_URL', 'https://r2.tld');
+        $env.set('APP_ROOT_R2_BASE_URL', 'https://r2.tld/base/');
         $env.set('APP_R2_ORIGIN_URL', 'https://r2.tld');
         $env.set('APP_R2_BASE_URL', 'https://r2.tld/base/');
         $env.set('APP_BRAND_PROPS', { type: 'site' });
@@ -24,6 +28,8 @@ describe('$brand', async () => {
     afterAll(async () => {
         $env.set('APP_PKG_NAME', __origAppPkgName__);
         $env.set('APP_BASE_URL', __origAppBaseURL__);
+        $env.set('APP_ROOT_R2_ORIGIN_URL', __origAppRootR2OriginURL__);
+        $env.set('APP_ROOT_R2_BASE_URL', __origAppRootR2BaseURL__);
         $env.set('APP_R2_ORIGIN_URL', __origAppR2OriginURL__);
         $env.set('APP_R2_BASE_URL', __origAppR2BaseURL__);
         $env.set('APP_BRAND_PROPS', __origAppBrandProps__);
@@ -37,6 +43,12 @@ describe('$brand', async () => {
             $app.hasBaseURL.flush(),
             $app.baseURL.flush(),
             //
+            $app.hasRootR2OriginURL.flush(),
+            $app.rootR2OriginURL.flush(),
+            //
+            $app.hasRootR2BaseURL.flush(),
+            $app.rootR2BaseURL.flush(),
+            //
             $app.hasR2OriginURL.flush(),
             $app.r2OriginURL.flush(),
             //
diff --git a/src/tests/classes/logger/index.ts b/src/tests/classes/logger/index.ts
index 4209b654..c14b7a54 100644
--- a/src/tests/classes/logger/index.ts
+++ b/src/tests/classes/logger/index.ts
@@ -7,6 +7,8 @@ import { afterAll, beforeAll, describe, expect, test } from 'vitest';
 
 const __origAppPkgName__ = $env.get('APP_PKG_NAME', { type: 'unknown' });
 const __origAppBaseURL__ = $env.get('APP_BASE_URL', { type: 'unknown' });
+const __origAppRootR2OriginURL__ = $env.get('APP_ROOT_R2_ORIGIN_URL', { type: 'unknown' });
+const __origAppRootR2BaseURL__ = $env.get('APP_ROOT_R2_BASE_URL', { type: 'unknown' });
 const __origAppR2OriginURL__ = $env.get('APP_R2_ORIGIN_URL', { type: 'unknown' });
 const __origAppR2BaseURL__ = $env.get('APP_R2_BASE_URL', { type: 'unknown' });
 const __origAppBrandProps__ = $env.get('APP_BRAND_PROPS', { type: 'unknown' });
@@ -19,6 +21,8 @@ describe('Logger', async () => {
     beforeAll(async () => {
         $env.set('APP_PKG_NAME', '@clevercanyon/x.tld');
         $env.set('APP_BASE_URL', 'https://x.tld/base/');
+        $env.set('APP_ROOT_R2_ORIGIN_URL', 'https://r2.tld');
+        $env.set('APP_ROOT_R2_BASE_URL', 'https://r2.tld/base/');
         $env.set('APP_R2_ORIGIN_URL', 'https://r2.tld');
         $env.set('APP_R2_BASE_URL', 'https://r2.tld/base/');
         $env.set('APP_BRAND_PROPS', { type: 'site' });
@@ -27,6 +31,8 @@ describe('Logger', async () => {
     afterAll(async () => {
         $env.set('APP_PKG_NAME', __origAppPkgName__);
         $env.set('APP_BASE_URL', __origAppBaseURL__);
+        $env.set('APP_ROOT_R2_ORIGIN_URL', __origAppRootR2OriginURL__);
+        $env.set('APP_ROOT_R2_BASE_URL', __origAppRootR2BaseURL__);
         $env.set('APP_R2_ORIGIN_URL', __origAppR2OriginURL__);
         $env.set('APP_R2_BASE_URL', __origAppR2BaseURL__);
         $env.set('APP_BRAND_PROPS', __origAppBrandProps__);
@@ -40,6 +46,12 @@ describe('Logger', async () => {
             $app.hasBaseURL.flush(),
             $app.baseURL.flush(),
             //
+            $app.hasRootR2OriginURL.flush(),
+            $app.rootR2OriginURL.flush(),
+            //
+            $app.hasRootR2BaseURL.flush(),
+            $app.rootR2BaseURL.flush(),
+            //
             $app.hasR2OriginURL.flush(),
             $app.r2OriginURL.flush(),
             //
diff --git a/src/tests/preact/apis/iso/hydratively-render-spa.web.tsx b/src/tests/preact/apis/iso/hydratively-render-spa.web.tsx
index 102dc934..50d3d523 100644
--- a/src/tests/preact/apis/iso/hydratively-render-spa.web.tsx
+++ b/src/tests/preact/apis/iso/hydratively-render-spa.web.tsx
@@ -8,6 +8,8 @@ import { afterAll, beforeAll, describe, expect, test, vi } from 'vitest';
 
 const __origAppPkgName__ = $env.get('APP_PKG_NAME', { type: 'unknown' });
 const __origAppBaseURL__ = $env.get('APP_BASE_URL', { type: 'unknown' });
+const __origAppRootR2OriginURL__ = $env.get('APP_ROOT_R2_ORIGIN_URL', { type: 'unknown' });
+const __origAppRootR2BaseURL__ = $env.get('APP_ROOT_R2_BASE_URL', { type: 'unknown' });
 const __origAppR2OriginURL__ = $env.get('APP_R2_ORIGIN_URL', { type: 'unknown' });
 const __origAppR2BaseURL__ = $env.get('APP_R2_BASE_URL', { type: 'unknown' });
 const __origAppBrandProps__ = $env.get('APP_BRAND_PROPS', { type: 'unknown' });
@@ -17,6 +19,8 @@ describe('$preact.iso.hydrativelyRenderSPA() [web]', async () => {
     beforeAll(async () => {
         $env.set('APP_PKG_NAME', '@clevercanyon/x.tld');
         $env.set('APP_BASE_URL', 'https://x.tld/base/');
+        $env.set('APP_ROOT_R2_ORIGIN_URL', 'https://r2.tld');
+        $env.set('APP_ROOT_R2_BASE_URL', 'https://r2.tld/base/');
         $env.set('APP_R2_ORIGIN_URL', 'https://r2.tld');
         $env.set('APP_R2_BASE_URL', 'https://r2.tld/base/');
         $env.set('APP_BRAND_PROPS', { type: 'site' });
@@ -25,6 +29,8 @@ describe('$preact.iso.hydrativelyRenderSPA() [web]', async () => {
     afterAll(async () => {
         $env.set('APP_PKG_NAME', __origAppPkgName__);
         $env.set('APP_BASE_URL', __origAppBaseURL__);
+        $env.set('APP_ROOT_R2_ORIGIN_URL', __origAppRootR2OriginURL__);
+        $env.set('APP_ROOT_R2_BASE_URL', __origAppRootR2BaseURL__);
         $env.set('APP_R2_ORIGIN_URL', __origAppR2OriginURL__);
         $env.set('APP_R2_BASE_URL', __origAppR2BaseURL__);
         $env.set('APP_BRAND_PROPS', __origAppBrandProps__);
@@ -38,6 +44,12 @@ describe('$preact.iso.hydrativelyRenderSPA() [web]', async () => {
             $app.hasBaseURL.flush(),
             $app.baseURL.flush(),
             //
+            $app.hasRootR2OriginURL.flush(),
+            $app.rootR2OriginURL.flush(),
+            //
+            $app.hasRootR2BaseURL.flush(),
+            $app.rootR2BaseURL.flush(),
+            //
             $app.hasR2OriginURL.flush(),
             $app.r2OriginURL.flush(),
             //
diff --git a/src/tests/preact/apis/iso/prerender-spa-404.cfw.tsx b/src/tests/preact/apis/iso/prerender-spa-404.cfw.tsx
index 7d38d8d7..007070fd 100644
--- a/src/tests/preact/apis/iso/prerender-spa-404.cfw.tsx
+++ b/src/tests/preact/apis/iso/prerender-spa-404.cfw.tsx
@@ -8,6 +8,8 @@ import { afterAll, beforeAll, describe, expect, test } from 'vitest';
 
 const __origAppPkgName__ = $env.get('APP_PKG_NAME', { type: 'unknown' });
 const __origAppBaseURL__ = $env.get('APP_BASE_URL', { type: 'unknown' });
+const __origAppRootR2OriginURL__ = $env.get('APP_ROOT_R2_ORIGIN_URL', { type: 'unknown' });
+const __origAppRootR2BaseURL__ = $env.get('APP_ROOT_R2_BASE_URL', { type: 'unknown' });
 const __origAppR2OriginURL__ = $env.get('APP_R2_ORIGIN_URL', { type: 'unknown' });
 const __origAppR2BaseURL__ = $env.get('APP_R2_BASE_URL', { type: 'unknown' });
 const __origAppBrandProps__ = $env.get('APP_BRAND_PROPS', { type: 'unknown' });
@@ -17,6 +19,8 @@ describe('$preact.iso.prerenderSPA() [404-cfw]', async () => {
     beforeAll(async () => {
         $env.set('APP_PKG_NAME', '@clevercanyon/x.tld');
         $env.set('APP_BASE_URL', 'https://x.tld/base/');
+        $env.set('APP_ROOT_R2_ORIGIN_URL', 'https://r2.tld');
+        $env.set('APP_ROOT_R2_BASE_URL', 'https://r2.tld/base/');
         $env.set('APP_R2_ORIGIN_URL', 'https://r2.tld');
         $env.set('APP_R2_BASE_URL', 'https://r2.tld/base/');
         $env.set('APP_BRAND_PROPS', { type: 'site' });
@@ -25,6 +29,8 @@ describe('$preact.iso.prerenderSPA() [404-cfw]', async () => {
     afterAll(async () => {
         $env.set('APP_PKG_NAME', __origAppPkgName__);
         $env.set('APP_BASE_URL', __origAppBaseURL__);
+        $env.set('APP_ROOT_R2_ORIGIN_URL', __origAppRootR2OriginURL__);
+        $env.set('APP_ROOT_R2_BASE_URL', __origAppRootR2BaseURL__);
         $env.set('APP_R2_ORIGIN_URL', __origAppR2OriginURL__);
         $env.set('APP_R2_BASE_URL', __origAppR2BaseURL__);
         $env.set('APP_BRAND_PROPS', __origAppBrandProps__);
@@ -38,6 +44,12 @@ describe('$preact.iso.prerenderSPA() [404-cfw]', async () => {
             $app.hasBaseURL.flush(),
             $app.baseURL.flush(),
             //
+            $app.hasRootR2OriginURL.flush(),
+            $app.rootR2OriginURL.flush(),
+            //
+            $app.hasRootR2BaseURL.flush(),
+            $app.rootR2BaseURL.flush(),
+            //
             $app.hasR2OriginURL.flush(),
             $app.r2OriginURL.flush(),
             //
diff --git a/src/tests/preact/apis/iso/prerender-spa-for-web-fixture.tsx b/src/tests/preact/apis/iso/prerender-spa-for-web-fixture.tsx
index e2f2c99c..347152bd 100644
--- a/src/tests/preact/apis/iso/prerender-spa-for-web-fixture.tsx
+++ b/src/tests/preact/apis/iso/prerender-spa-for-web-fixture.tsx
@@ -12,6 +12,8 @@ import { afterAll, beforeAll, describe, expect, test } from 'vitest';
 
 const __origAppPkgName__ = $env.get('APP_PKG_NAME', { type: 'unknown' });
 const __origAppBaseURL__ = $env.get('APP_BASE_URL', { type: 'unknown' });
+const __origAppRootR2OriginURL__ = $env.get('APP_ROOT_R2_ORIGIN_URL', { type: 'unknown' });
+const __origAppRootR2BaseURL__ = $env.get('APP_ROOT_R2_BASE_URL', { type: 'unknown' });
 const __origAppR2OriginURL__ = $env.get('APP_R2_ORIGIN_URL', { type: 'unknown' });
 const __origAppR2BaseURL__ = $env.get('APP_R2_BASE_URL', { type: 'unknown' });
 const __origAppBrandProps__ = $env.get('APP_BRAND_PROPS', { type: 'unknown' });
@@ -21,6 +23,8 @@ describe('$preact.iso.prerenderSPA() [web-fixture]', async () => {
     beforeAll(async () => {
         $env.set('APP_PKG_NAME', '@clevercanyon/x.tld');
         $env.set('APP_BASE_URL', 'https://x.tld/base/');
+        $env.set('APP_ROOT_R2_ORIGIN_URL', 'https://r2.tld');
+        $env.set('APP_ROOT_R2_BASE_URL', 'https://r2.tld/base/');
         $env.set('APP_R2_ORIGIN_URL', 'https://r2.tld');
         $env.set('APP_R2_BASE_URL', 'https://r2.tld/base/');
         $env.set('APP_BRAND_PROPS', { type: 'site' });
@@ -29,6 +33,8 @@ describe('$preact.iso.prerenderSPA() [web-fixture]', async () => {
     afterAll(async () => {
         $env.set('APP_PKG_NAME', __origAppPkgName__);
         $env.set('APP_BASE_URL', __origAppBaseURL__);
+        $env.set('APP_ROOT_R2_ORIGIN_URL', __origAppRootR2OriginURL__);
+        $env.set('APP_ROOT_R2_BASE_URL', __origAppRootR2BaseURL__);
         $env.set('APP_R2_ORIGIN_URL', __origAppR2OriginURL__);
         $env.set('APP_R2_BASE_URL', __origAppR2BaseURL__);
         $env.set('APP_BRAND_PROPS', __origAppBrandProps__);
@@ -42,6 +48,12 @@ describe('$preact.iso.prerenderSPA() [web-fixture]', async () => {
             $app.hasBaseURL.flush(),
             $app.baseURL.flush(),
             //
+            $app.hasRootR2OriginURL.flush(),
+            $app.rootR2OriginURL.flush(),
+            //
+            $app.hasRootR2BaseURL.flush(),
+            $app.rootR2BaseURL.flush(),
+            //
             $app.hasR2OriginURL.flush(),
             $app.r2OriginURL.flush(),
             //
diff --git a/src/tests/preact/apis/iso/prerender-spa-lazy.cfw.tsx b/src/tests/preact/apis/iso/prerender-spa-lazy.cfw.tsx
index 69a741ec..d4073d6c 100644
--- a/src/tests/preact/apis/iso/prerender-spa-lazy.cfw.tsx
+++ b/src/tests/preact/apis/iso/prerender-spa-lazy.cfw.tsx
@@ -8,6 +8,8 @@ import { afterAll, beforeAll, describe, expect, test, vi } from 'vitest';
 
 const __origAppPkgName__ = $env.get('APP_PKG_NAME', { type: 'unknown' });
 const __origAppBaseURL__ = $env.get('APP_BASE_URL', { type: 'unknown' });
+const __origAppRootR2OriginURL__ = $env.get('APP_ROOT_R2_ORIGIN_URL', { type: 'unknown' });
+const __origAppRootR2BaseURL__ = $env.get('APP_ROOT_R2_BASE_URL', { type: 'unknown' });
 const __origAppR2OriginURL__ = $env.get('APP_R2_ORIGIN_URL', { type: 'unknown' });
 const __origAppR2BaseURL__ = $env.get('APP_R2_BASE_URL', { type: 'unknown' });
 const __origAppBrandProps__ = $env.get('APP_BRAND_PROPS', { type: 'unknown' });
@@ -17,6 +19,8 @@ describe('$preact.iso.prerenderSPA() [lazy-cfw]', async () => {
     beforeAll(async () => {
         $env.set('APP_PKG_NAME', '@clevercanyon/x.tld');
         $env.set('APP_BASE_URL', 'https://x.tld/base/');
+        $env.set('APP_ROOT_R2_ORIGIN_URL', 'https://r2.tld');
+        $env.set('APP_ROOT_R2_BASE_URL', 'https://r2.tld/base/');
         $env.set('APP_R2_ORIGIN_URL', 'https://r2.tld');
         $env.set('APP_R2_BASE_URL', 'https://r2.tld/base/');
         $env.set('APP_BRAND_PROPS', { type: 'site' });
@@ -25,6 +29,8 @@ describe('$preact.iso.prerenderSPA() [lazy-cfw]', async () => {
     afterAll(async () => {
         $env.set('APP_PKG_NAME', __origAppPkgName__);
         $env.set('APP_BASE_URL', __origAppBaseURL__);
+        $env.set('APP_ROOT_R2_ORIGIN_URL', __origAppRootR2OriginURL__);
+        $env.set('APP_ROOT_R2_BASE_URL', __origAppRootR2BaseURL__);
         $env.set('APP_R2_ORIGIN_URL', __origAppR2OriginURL__);
         $env.set('APP_R2_BASE_URL', __origAppR2BaseURL__);
         $env.set('APP_BRAND_PROPS', __origAppBrandProps__);
@@ -38,6 +44,12 @@ describe('$preact.iso.prerenderSPA() [lazy-cfw]', async () => {
             $app.hasBaseURL.flush(),
             $app.baseURL.flush(),
             //
+            $app.hasRootR2OriginURL.flush(),
+            $app.rootR2OriginURL.flush(),
+            //
+            $app.hasRootR2BaseURL.flush(),
+            $app.rootR2BaseURL.flush(),
+            //
             $app.hasR2OriginURL.flush(),
             $app.r2OriginURL.flush(),
             //
diff --git a/src/tests/preact/apis/iso/prerender-spa.node.tsx b/src/tests/preact/apis/iso/prerender-spa.node.tsx
index 53d33d13..ebda0a69 100644
--- a/src/tests/preact/apis/iso/prerender-spa.node.tsx
+++ b/src/tests/preact/apis/iso/prerender-spa.node.tsx
@@ -8,6 +8,8 @@ import { afterAll, beforeAll, describe, expect, test } from 'vitest';
 
 const __origAppPkgName__ = $env.get('APP_PKG_NAME', { type: 'unknown' });
 const __origAppBaseURL__ = $env.get('APP_BASE_URL', { type: 'unknown' });
+const __origAppRootR2OriginURL__ = $env.get('APP_ROOT_R2_ORIGIN_URL', { type: 'unknown' });
+const __origAppRootR2BaseURL__ = $env.get('APP_ROOT_R2_BASE_URL', { type: 'unknown' });
 const __origAppR2OriginURL__ = $env.get('APP_R2_ORIGIN_URL', { type: 'unknown' });
 const __origAppR2BaseURL__ = $env.get('APP_R2_BASE_URL', { type: 'unknown' });
 const __origAppBrandProps__ = $env.get('APP_BRAND_PROPS', { type: 'unknown' });
@@ -17,6 +19,8 @@ describe('$preact.iso.prerenderSPA()', async () => {
     beforeAll(async () => {
         $env.set('APP_PKG_NAME', '@clevercanyon/x.tld');
         $env.set('APP_BASE_URL', 'https://x.tld/base/');
+        $env.set('APP_ROOT_R2_ORIGIN_URL', 'https://r2.tld');
+        $env.set('APP_ROOT_R2_BASE_URL', 'https://r2.tld/base/');
         $env.set('APP_R2_ORIGIN_URL', 'https://r2.tld');
         $env.set('APP_R2_BASE_URL', 'https://r2.tld/base/');
         $env.set('APP_BRAND_PROPS', { type: 'site' });
@@ -25,6 +29,8 @@ describe('$preact.iso.prerenderSPA()', async () => {
     afterAll(async () => {
         $env.set('APP_PKG_NAME', __origAppPkgName__);
         $env.set('APP_BASE_URL', __origAppBaseURL__);
+        $env.set('APP_ROOT_R2_ORIGIN_URL', __origAppRootR2OriginURL__);
+        $env.set('APP_ROOT_R2_BASE_URL', __origAppRootR2BaseURL__);
         $env.set('APP_R2_ORIGIN_URL', __origAppR2OriginURL__);
         $env.set('APP_R2_BASE_URL', __origAppR2BaseURL__);
         $env.set('APP_BRAND_PROPS', __origAppBrandProps__);
@@ -38,6 +44,12 @@ describe('$preact.iso.prerenderSPA()', async () => {
             $app.hasBaseURL.flush(),
             $app.baseURL.flush(),
             //
+            $app.hasRootR2OriginURL.flush(),
+            $app.rootR2OriginURL.flush(),
+            //
+            $app.hasRootR2BaseURL.flush(),
+            $app.rootR2BaseURL.flush(),
+            //
             $app.hasR2OriginURL.flush(),
             $app.r2OriginURL.flush(),
             //
diff --git a/src/tests/preact/components/root.tsx b/src/tests/preact/components/root.tsx
index 23a6a5c1..5c7cf7ec 100644
--- a/src/tests/preact/components/root.tsx
+++ b/src/tests/preact/components/root.tsx
@@ -8,6 +8,8 @@ import { afterAll, beforeAll, describe, expect, test } from 'vitest';
 
 const __origAppPkgName__ = $env.get('APP_PKG_NAME', { type: 'unknown' });
 const __origAppBaseURL__ = $env.get('APP_BASE_URL', { type: 'unknown' });
+const __origAppRootR2OriginURL__ = $env.get('APP_ROOT_R2_ORIGIN_URL', { type: 'unknown' });
+const __origAppRootR2BaseURL__ = $env.get('APP_ROOT_R2_BASE_URL', { type: 'unknown' });
 const __origAppR2OriginURL__ = $env.get('APP_R2_ORIGIN_URL', { type: 'unknown' });
 const __origAppR2BaseURL__ = $env.get('APP_R2_BASE_URL', { type: 'unknown' });
 const __origAppBrandProps__ = $env.get('APP_BRAND_PROPS', { type: 'unknown' });
@@ -17,6 +19,8 @@ describe('<Root>', async () => {
     beforeAll(async () => {
         $env.set('APP_PKG_NAME', '@clevercanyon/x.tld');
         $env.set('APP_BASE_URL', 'https://x.tld/base/');
+        $env.set('APP_ROOT_R2_ORIGIN_URL', 'https://r2.tld');
+        $env.set('APP_ROOT_R2_BASE_URL', 'https://r2.tld/base/');
         $env.set('APP_R2_ORIGIN_URL', 'https://r2.tld');
         $env.set('APP_R2_BASE_URL', 'https://r2.tld/base/');
         $env.set('APP_BRAND_PROPS', { type: 'site' });
@@ -25,6 +29,8 @@ describe('<Root>', async () => {
     afterAll(async () => {
         $env.set('APP_PKG_NAME', __origAppPkgName__);
         $env.set('APP_BASE_URL', __origAppBaseURL__);
+        $env.set('APP_ROOT_R2_ORIGIN_URL', __origAppRootR2OriginURL__);
+        $env.set('APP_ROOT_R2_BASE_URL', __origAppRootR2BaseURL__);
         $env.set('APP_R2_ORIGIN_URL', __origAppR2OriginURL__);
         $env.set('APP_R2_BASE_URL', __origAppR2BaseURL__);
         $env.set('APP_BRAND_PROPS', __origAppBrandProps__);
@@ -38,6 +44,12 @@ describe('<Root>', async () => {
             $app.hasBaseURL.flush(),
             $app.baseURL.flush(),
             //
+            $app.hasRootR2OriginURL.flush(),
+            $app.rootR2OriginURL.flush(),
+            //
+            $app.hasRootR2BaseURL.flush(),
+            $app.rootR2BaseURL.flush(),
+            //
             $app.hasR2OriginURL.flush(),
             $app.r2OriginURL.flush(),
             //
diff --git a/src/tests/url/index.any.ts b/src/tests/url/index.any.ts
index ca566c00..e2f7bcbf 100644
--- a/src/tests/url/index.any.ts
+++ b/src/tests/url/index.any.ts
@@ -7,6 +7,8 @@ import { afterAll, beforeAll, describe, expect, test } from 'vitest';
 
 const __origAppPkgName__ = $env.get('APP_PKG_NAME', { type: 'unknown' });
 const __origAppBaseURL__ = $env.get('APP_BASE_URL', { type: 'unknown' });
+const __origAppRootR2OriginURL__ = $env.get('APP_ROOT_R2_ORIGIN_URL', { type: 'unknown' });
+const __origAppRootR2BaseURL__ = $env.get('APP_ROOT_R2_BASE_URL', { type: 'unknown' });
 const __origAppR2OriginURL__ = $env.get('APP_R2_ORIGIN_URL', { type: 'unknown' });
 const __origAppR2BaseURL__ = $env.get('APP_R2_BASE_URL', { type: 'unknown' });
 const __origAppBrandProps__ = $env.get('APP_BRAND_PROPS', { type: 'unknown' });
@@ -16,6 +18,8 @@ describe('$url', async () => {
     beforeAll(async () => {
         $env.set('APP_PKG_NAME', '@clevercanyon/x.tld');
         $env.set('APP_BASE_URL', 'https://x.tld/base/');
+        $env.set('APP_ROOT_R2_ORIGIN_URL', 'https://r2.tld');
+        $env.set('APP_ROOT_R2_BASE_URL', 'https://r2.tld/base/');
         $env.set('APP_R2_ORIGIN_URL', 'https://r2.tld');
         $env.set('APP_R2_BASE_URL', 'https://r2.tld/base/');
         $env.set('APP_BRAND_PROPS', { type: 'site' });
@@ -24,6 +28,8 @@ describe('$url', async () => {
     afterAll(async () => {
         $env.set('APP_PKG_NAME', __origAppPkgName__);
         $env.set('APP_BASE_URL', __origAppBaseURL__);
+        $env.set('APP_ROOT_R2_ORIGIN_URL', __origAppRootR2OriginURL__);
+        $env.set('APP_ROOT_R2_BASE_URL', __origAppRootR2BaseURL__);
         $env.set('APP_R2_ORIGIN_URL', __origAppR2OriginURL__);
         $env.set('APP_R2_BASE_URL', __origAppR2BaseURL__);
         $env.set('APP_BRAND_PROPS', __origAppBrandProps__);
@@ -37,6 +43,12 @@ describe('$url', async () => {
             $app.hasBaseURL.flush(),
             $app.baseURL.flush(),
             //
+            $app.hasRootR2OriginURL.flush(),
+            $app.rootR2OriginURL.flush(),
+            //
+            $app.hasRootR2BaseURL.flush(),
+            $app.rootR2BaseURL.flush(),
+            //
             $app.hasR2OriginURL.flush(),
             $app.r2OriginURL.flush(),
             //
diff --git a/src/url.ts b/src/url.ts
index 96ad1f00..b11c683d 100644
--- a/src/url.ts
+++ b/src/url.ts
@@ -388,6 +388,127 @@ function _removeAppBasePath(parseable: $type.URL | string): Readonly<$type.URL>
 }
 export const removeAppBasePath = $fnꓺmemo(24, _removeAppBasePath);
 
+/* ---
+ * App root R2 origin utilities.
+ */
+
+/**
+ * Gets app’s root R2 origin URL.
+ *
+ * @returns App’s root R2 origin URL.
+ *
+ * @see $app.rootR2OriginURL()
+ */
+
+/**
+ * Gets URL from app’s root R2 origin.
+ *
+ * @param   parseable Parseable URL or string.
+ *
+ * @returns           A full URL from app’s root R2 origin.
+ */
+export const fromAppRootR2Origin = $fnꓺmemo(24, (parseable: $type.URL | string): string => {
+    return parse(parseable, $app.rootR2OriginURL() + '/').toString();
+});
+
+/**
+ * Gets root-relative path from app’s root R2 origin.
+ *
+ * @param   parseable Parseable URL or string.
+ *
+ * @returns           `/base/path?query#hash` from app’s root R2 origin.
+ */
+export const pathFromAppRootR2Origin = $fnꓺmemo(24, (parseable: $type.URL | string): string => {
+    return toPathQueryHash(fromAppRootR2Origin(parseable));
+});
+
+/* ---
+ * App root R2 base utilities.
+ */
+
+/**
+ * Gets app’s root R2 base URL.
+ *
+ * @returns App’s root R2 base URL.
+ *
+ * @see $app.rootR2BaseURL()
+ */
+
+/**
+ * Gets app’s root R2 base path.
+ *
+ * @returns App’s root R2 base path.
+ */
+export const appRootR2BasePath = $fnꓺmemo((): string => {
+    return parse($app.rootR2BaseURL()).pathname;
+});
+
+/**
+ * Gets URL from app’s root R2 base.
+ *
+ * @param   parseable Parseable URL or string.
+ *
+ * @returns           A full URL from app’s root R2 base.
+ */
+export const fromAppRootR2Base = $fnꓺmemo(24, (parseable: $type.URL | string): string => {
+    return parse(parseable, $app.rootR2BaseURL()).toString();
+});
+
+/**
+ * Gets root-relative path from app’s root R2 base.
+ *
+ * @param   parseable Parseable URL or string.
+ *
+ * @returns           `/base/path?query#hash` from app’s root R2 base.
+ */
+export const pathFromAppRootR2Base = $fnꓺmemo(24, (parseable: $type.URL | string): string => {
+    return toPathQueryHash(fromAppRootR2Base(parseable));
+});
+
+/**
+ * Adds app’s root R2 base path.
+ *
+ * @param   parseable Parseable URL or string.
+ *
+ * @returns           Parseable URL or string with app’s root R2 base path.
+ *
+ *   - Returns a {@see URL} if input was a {@see URL}. A string otherwise.
+ *
+ * @note Unable to deep freeze a URL, but we would do so if possible.
+ *       For now, we just declare it readonly using a TypeScript return type.
+ *
+ * @see addBasePath()
+ */
+function _addAppRootR2BasePath(parseable: $type.URL): Readonly<$type.URL>;
+function _addAppRootR2BasePath(parseable: string): string;
+
+function _addAppRootR2BasePath(parseable: $type.URL | string): Readonly<$type.URL> | string {
+    return addBasePath(parseable, $app.rootR2BaseURL());
+}
+export const addAppRootR2BasePath = $fnꓺmemo(24, _addAppRootR2BasePath);
+
+/**
+ * Removes app’s root R2 base path.
+ *
+ * @param   parseable Parseable URL or string.
+ *
+ * @returns           Parseable URL or string without app’s root R2 base path.
+ *
+ *   - Returns a {@see URL} if input was a {@see URL}. A string otherwise.
+ *
+ * @note Unable to deep freeze a URL, but we would do so if possible.
+ *       For now, we just declare it readonly using a TypeScript return type.
+ *
+ * @see removeBasePath()
+ */
+function _removeAppRootR2BasePath(parseable: $type.URL): Readonly<$type.URL>;
+function _removeAppRootR2BasePath(parseable: string): string;
+
+function _removeAppRootR2BasePath(parseable: $type.URL | string): Readonly<$type.URL> | string {
+    return removeBasePath(parseable, $app.rootR2BaseURL());
+}
+export const removeAppRootR2BasePath = $fnꓺmemo(24, _removeAppRootR2BasePath);
+
 /* ---
  * App R2 origin utilities.
  */
diff --git a/tsconfig.json b/tsconfig.json
index 5973d1cb..a5b1d6d7 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -7,7 +7,7 @@
  * @note This entire file will be updated automatically.
  * @note Instead of editing here, please review `./tsconfig.mjs`.
  *
- * Last generated using `./tsconfig.mjs` Mar 22, 2024 7:11 AM UTC.
+ * Last generated using `./tsconfig.mjs` Mar 22, 2024 7:58 AM UTC.
  */
 {
     "include": ["./src/**/*", "./dev-types.d.ts"],
diff --git a/wrangler.toml b/wrangler.toml
index 7a65a1b1..40387ea6 100644
--- a/wrangler.toml
+++ b/wrangler.toml
@@ -7,7 +7,7 @@
 # @note This entire file will be updated automatically.
 # @note Instead of editing here, please review `./wrangler.mjs`.
 #
-# Last generated using `./wrangler.mjs` Mar 22, 2024 7:11 AM UTC.
+# Last generated using `./wrangler.mjs` Mar 22, 2024 7:58 AM UTC.
 ##
 
 send_metrics = false