diff --git a/web/app.js b/web/app.js
index 7883a802e..0e879e1e5 100644
--- a/web/app.js
+++ b/web/app.js
@@ -35,7 +35,7 @@ import {
   SpreadMode,
   TextLayerMode,
 } from "./ui_utils.js";
-import { AppOptions, compatibilityParams, OptionKind } from "./app_options.js";
+import { AppOptions, OptionKind } from "./app_options.js";
 import { AutomationEventBus, EventBus } from "./event_utils.js";
 import {
   build,
@@ -2490,22 +2490,11 @@ if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
     }
     const file = evt.fileInput.files[0];
 
-    if (!compatibilityParams.disableCreateObjectURL) {
-      let url = URL.createObjectURL(file);
-      if (file.name) {
-        url = { url, originalUrl: file.name };
-      }
-      PDFViewerApplication.open(url);
-    } else {
-      PDFViewerApplication.setTitleUsingUrl(file.name);
-      // Read the local file into a Uint8Array.
-      const fileReader = new FileReader();
-      fileReader.onload = function webViewerChangeFileReaderOnload(event) {
-        const buffer = event.target.result;
-        PDFViewerApplication.open(new Uint8Array(buffer));
-      };
-      fileReader.readAsArrayBuffer(file);
+    let url = URL.createObjectURL(file);
+    if (file.name) {
+      url = { url, originalUrl: file.name };
     }
+    PDFViewerApplication.open(url);
   };
 
   webViewerOpenFile = function (evt) {
diff --git a/web/app_options.js b/web/app_options.js
index 646dbbaed..f4b58d2c2 100644
--- a/web/app_options.js
+++ b/web/app_options.js
@@ -26,17 +26,6 @@ if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
   const isIOS =
     /\b(iPad|iPhone|iPod)(?=;)/.test(userAgent) ||
     (platform === "MacIntel" && maxTouchPoints > 1);
-  const isIOSChrome = /CriOS/.test(userAgent);
-
-  // Disables URL.createObjectURL() usage in some environments.
-  // Support: Chrome on iOS
-  (function checkOnBlobSupport() {
-    // Sometimes Chrome on iOS loses data created with createObjectURL(),
-    // see issue 8081.
-    if (isIOSChrome) {
-      compatibilityParams.disableCreateObjectURL = true;
-    }
-  })();
 
   // Limit canvas size to 5 mega-pixels on mobile.
   // Support: Android, iOS
diff --git a/web/download_manager.js b/web/download_manager.js
index 55cc7d732..27609563f 100644
--- a/web/download_manager.js
+++ b/web/download_manager.js
@@ -15,8 +15,7 @@
 
 /** @typedef {import("./interfaces").IDownloadManager} IDownloadManager */
 
-import { createObjectURL, createValidAbsoluteUrl, isPdfFile } from "pdfjs-lib";
-import { compatibilityParams } from "./app_options.js";
+import { createValidAbsoluteUrl, isPdfFile } from "pdfjs-lib";
 
 if (typeof PDFJSDev !== "undefined" && !PDFJSDev.test("CHROME || GENERIC")) {
   throw new Error(
@@ -61,10 +60,8 @@ class DownloadManager {
   }
 
   downloadData(data, filename, contentType) {
-    const blobUrl = createObjectURL(
-      data,
-      contentType,
-      compatibilityParams.disableCreateObjectURL
+    const blobUrl = URL.createObjectURL(
+      new Blob([data], { type: contentType })
     );
     download(blobUrl, filename);
   }
@@ -76,7 +73,7 @@ class DownloadManager {
     const isPdfData = isPdfFile(filename);
     const contentType = isPdfData ? "application/pdf" : "";
 
-    if (isPdfData && !compatibilityParams.disableCreateObjectURL) {
+    if (isPdfData) {
       let blobUrl = this._openBlobUrls.get(element);
       if (!blobUrl) {
         blobUrl = URL.createObjectURL(new Blob([data], { type: contentType }));
@@ -119,11 +116,6 @@ class DownloadManager {
    *   the "open with" dialog.
    */
   download(blob, url, filename, sourceEventType = "download") {
-    if (compatibilityParams.disableCreateObjectURL) {
-      // URL.createObjectURL is not supported
-      this.downloadUrl(url, filename);
-      return;
-    }
     const blobUrl = URL.createObjectURL(blob);
     download(blobUrl, filename);
   }
diff --git a/web/pdf_page_view.js b/web/pdf_page_view.js
index 1740c59df..40e454fc8 100644
--- a/web/pdf_page_view.js
+++ b/web/pdf_page_view.js
@@ -913,11 +913,7 @@ class PDFPageView {
       })
       .then(opList => {
         ensureNotCancelled();
-        const svgGfx = new SVGGraphics(
-          pdfPage.commonObjs,
-          pdfPage.objs,
-          /* forceDataSchema = */ compatibilityParams.disableCreateObjectURL
-        );
+        const svgGfx = new SVGGraphics(pdfPage.commonObjs, pdfPage.objs);
         return svgGfx.getSVG(opList, actualSizeViewport).then(svg => {
           ensureNotCancelled();
           this.svg = svg;
diff --git a/web/pdf_print_service.js b/web/pdf_print_service.js
index 38c87156b..08490960f 100644
--- a/web/pdf_print_service.js
+++ b/web/pdf_print_service.js
@@ -15,7 +15,6 @@
 
 import { AnnotationMode, PixelsPerInch } from "pdfjs-lib";
 import { PDFPrintServiceFactory, PDFViewerApplication } from "./app.js";
-import { compatibilityParams } from "./app_options.js";
 import { getXfaHtmlForPrinting } from "./print_utils.js";
 
 let activeService = null;
@@ -176,10 +175,7 @@ PDFPrintService.prototype = {
     this.throwIfInactive();
     const img = document.createElement("img");
     const scratchCanvas = this.scratchCanvas;
-    if (
-      "toBlob" in scratchCanvas &&
-      !compatibilityParams.disableCreateObjectURL
-    ) {
+    if ("toBlob" in scratchCanvas) {
       scratchCanvas.toBlob(function (blob) {
         img.src = URL.createObjectURL(blob);
       });