fix#20265

src/core/evaluator.js

@@ -4800,7 +4800,9 @@ class TranslatedFont {
             }
           })
           .catch(function (reason) {
+            if (!globalThis.SILENCE_TYPE3_WARNINGS) {
               warn(`Type3 font resource "${key}" is not available.`);
+            }
             const dummyOperatorList = new OperatorList();
             charProcOperatorList[key] = dummyOperatorList.getIR();
           });

web/app.js

@@ -98,6 +98,7 @@ import { Toolbar } from "web-toolbar";
 import { ViewHistory } from "./view_history.js";
 
 const FORCE_PAGES_LOADED_TIMEOUT = 10000; // ms
+globalThis.SILENCE_TYPE3_WARNINGS = true;
 
 const ViewOnLoad = {
   UNKNOWN: -1,