diff --git a/app/src/main/java/de/rwth_aachen/phyphox/RemoteServer.java b/app/src/main/java/de/rwth_aachen/phyphox/RemoteServer.java
index a214a9c9c..0fd3fda6a 100644
--- a/app/src/main/java/de/rwth_aachen/phyphox/RemoteServer.java
+++ b/app/src/main/java/de/rwth_aachen/phyphox/RemoteServer.java
@@ -386,6 +386,8 @@ public synchronized void stop() {
 
     protected int respond(Response response, String contentType, InputStream in, long length) throws IOException {
         try {
+            // CORS: allow cross-origin browser pages to read remote-access responses.
+            response.getHeaders().add("Access-Control-Allow-Origin", "*");
             response.sendHeaders(200, length, System.currentTimeMillis(), null, contentType, null);
             response.sendBody(in, -1, null);
         } finally {