diff --git a/src/PUBLIC_URL.ts b/src/PUBLIC_URL.ts
new file mode 100644
index 00000000..cfd6d701
--- /dev/null
+++ b/src/PUBLIC_URL.ts
@@ -0,0 +1,13 @@
+import { nameOfTheGlobal, basenameOfTheKeycloakifyResourcesDir } from "keycloakify/bin/constants";
+
+/**
+ * This is an equivalent of process.env.PUBLIC_URL thay you can use in Webpack projects.
+ * This works both in your main app and in your Keycloak theme.
+ */
+export const PUBLIC_URL = (() => {
+    const kcContext = (window as any)[nameOfTheGlobal];
+
+    return kcContext === undefined || process.env.NODE_ENV === "development"
+        ? process.env.PUBLIC_URL
+        : `${kcContext.url.resourcesPath}/${basenameOfTheKeycloakifyResourcesDir}`;
+})();