diff --git a/packages/extension/src/inject/index.ts b/packages/extension/src/inject/index.ts
index acf24b5d..b85b635d 100644
--- a/packages/extension/src/inject/index.ts
+++ b/packages/extension/src/inject/index.ts
@@ -6,6 +6,7 @@ import {
   busDispatch,
   busSubscribe,
   canLoadReactScan,
+  isHtmlPage,
   hasReactFiber,
   readLocalStorage,
   saveLocalStorage,
@@ -89,6 +90,10 @@ const updateReactScanState = async (isEnabled: boolean | null) => {
 void initializeReactScan();
 
 window.addEventListener('DOMContentLoaded', async () => {
+  if (!isHtmlPage) {
+    return;
+  }
+
   if (!canLoadReactScan) {
     return;
   }
diff --git a/packages/extension/src/utils/helpers.ts b/packages/extension/src/utils/helpers.ts
index b8699853..58c1fb43 100644
--- a/packages/extension/src/utils/helpers.ts
+++ b/packages/extension/src/utils/helpers.ts
@@ -2,6 +2,8 @@ export const isIframe = window !== window.top;
 export const isPopup = window.opener !== null;
 export const canLoadReactScan = !isIframe && !isPopup;
 
+export const isHtmlPage = document.contentType === "text/html";
+
 export const IS_CLIENT = typeof window !== 'undefined';
 
 export const isInternalUrl = (url: string): boolean => {