diff --git a/aqt/webview.py b/aqt/webview.py
index beb4a8ecd..cc0fce5a0 100644
--- a/aqt/webview.py
+++ b/aqt/webview.py
@@ -68,6 +68,9 @@ class AnkiWebPage(QWebEnginePage):
     def acceptNavigationRequest(self, url, navType, isMainFrame):
         if not isMainFrame:
             return True
+        # data: links generated by setHtml()
+        if url.scheme() == "data":
+            return True
         from aqt import mw
         # ignore href=#
         if url.toString().startswith(mw.serverURL()):