diff --git a/app/src/components/items/uv/universalViewer.tsx b/app/src/components/items/uv/universalViewer.tsx
index 5445c234..aff0b127 100644
--- a/app/src/components/items/uv/universalViewer.tsx
+++ b/app/src/components/items/uv/universalViewer.tsx
@@ -7,6 +7,7 @@ import React, { useEffect, useMemo, useRef } from "react";
 import { IIIFEvents as BaseEvents, IIIFURLAdapter } from "universalviewer";
 import { useRouter, usePathname, useSearchParams } from "next/navigation";
 import { useCanvasContext } from "../../../context/CanvasProvider";
+import { sendDownloadEvent } from "@/src/utils/ga4Utils";
 
 export type UniversalViewerProps = {
   config?: any;
@@ -70,33 +71,8 @@ const UniversalViewer: React.FC<UniversalViewerProps> = React.memo(
     }, [canvasIndex, uv]);
 
     useEffect(() => {
-      let mo: MutationObserver | undefined;
 
       if (uv) {
-        // Hide specific default download options by button/anchor text. Right now, just "Whole imiage".
-        function pruneDownloadButtons() {
-          const host =
-            document.querySelector(".uv-iiif-extension-host") || document;
-          const nodes = host.querySelectorAll<HTMLElement>(
-            "li.option.single > button, li.option.single button, li.option.single > a, li.option.single a"
-          );
-          nodes.forEach((el) => {
-            const text = (el.textContent || "").trim().toLowerCase();
-            const isWholeImage = text.startsWith("whole image");
-
-            if (isWholeImage) {
-              const li = el.closest("li");
-              if (li instanceof HTMLElement) {
-                li.style.display = "none";
-              } else {
-                (el as HTMLElement).style.display = "none";
-              }
-              // Uncomment to verify what got hidden:
-              // console.log("[UV prune] hid", text, el);
-            }
-          });
-        }
-
         // override config using an inline json object
         uv.on("configure", function ({ config, cb }) {
           console.log("config on uv.on(configure) is : ", config);
@@ -211,6 +187,8 @@ const UniversalViewer: React.FC<UniversalViewerProps> = React.memo(
                 },
                 downloadDialogue: {
                   options: {
+                    downloadWholeImageHighResEnabled: false,
+                    downloadWholeImageLowResEnabled: false,
                     downloadCurrentViewEnabled: false,
                   },
                 },
@@ -218,34 +196,37 @@ const UniversalViewer: React.FC<UniversalViewerProps> = React.memo(
             },
             [uv]
           );
-
-          // Initial pass (in case the dialog already exists)
-          pruneDownloadButtons();
-
-          // Watch for dialog render/changes and re-prune
-          try {
-            mo = new MutationObserver(() => pruneDownloadButtons());
-            mo.observe(document.body, { subtree: true, childList: true });
-          } catch {}
         });
       }
 
       // cleanup: disconnect observer on unmount / dependency change
-      return () => {
-        try {
-          mo?.disconnect();
-        } catch {}
-      };
     }, [canvasIndex, uv]);
 
     useEvent(uv, BaseEvents.CANVAS_INDEX_CHANGE, (i) => {
       setCurrentCanvasIndex(i);
     });
 
-    useEvent(uv, BaseEvents.DOWNLOAD, (i) => {
-      console.log("blah i ", i);
+    useEvent(uv, BaseEvents.DOWNLOAD, ({ label }) => {
+      const fileInfo = parseUVDownloadFilename(label);
+      if (fileInfo) {
+        sendDownloadEvent(fileInfo.name, fileInfo.extension);
+      } else {
+        console.log(`Could not parse file info from label ${label}`);
+        sendDownloadEvent(label);
+      }
     });
 
+    const parseUVDownloadFilename = (fileLabel: string) => {
+      const match = fileLabel.match(/^(.*)\s\((.*)\)$/);
+      if (match) {
+        return {
+          name: match[1],
+          extension: match[2],
+        };
+      }
+      return null;
+    };
+
     return (
       <>
         <div
diff --git a/app/src/utils/ga4Utils.ts b/app/src/utils/ga4Utils.ts
index e986dc24..595fe5b2 100644
--- a/app/src/utils/ga4Utils.ts
+++ b/app/src/utils/ga4Utils.ts
@@ -20,7 +20,7 @@ export const trackGa4PageView = (
 
 export const sendDownloadEvent = (
   fileName: string,
-  extension: string,
+  extension?: string,
   division?: string,
   collection?: string,
   subcollection?: string
@@ -29,7 +29,7 @@ export const sendDownloadEvent = (
   dataLayer.push({
     event: "file_download",
     file_name: fileName,
-    file_extension: extension,
+    file_extension: extension ?? GA_NOT_SET,
     division_center: division ? division : GA_NOT_SET,
     collection: collection ? collection : GA_NOT_SET,
     subcollection: subcollection ? subcollection : GA_NOT_SET,
diff --git a/package-lock.json b/package-lock.json
index 48bfd004..7bc55627 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -24,7 +24,7 @@
         "ts-node": "10.9.1",
         "typescript": "4.9.5",
         "ua-parser-js": "1.0.38",
-        "universalviewer": "4.1.0",
+        "universalviewer": "4.3.0-rc4",
         "vite": "5.4.21",
         "winston": "3.9.0"
       },
@@ -1851,16 +1851,6 @@
       "resolved": "https://registry.npmjs.org/@edsilv/http-status-codes/-/http-status-codes-1.0.3.tgz",
       "integrity": "sha512-HLK2FS5sZqxPqD53D6hhZxC6C8THTVwlyZDZ7J0iWsrB8JmMA69m/CQuNKZc1kki9WSVeck2fXna26NL0SE7cg=="
     },
-    "node_modules/@edsilv/jquery-plugins": {
-      "version": "1.0.7",
-      "resolved": "https://registry.npmjs.org/@edsilv/jquery-plugins/-/jquery-plugins-1.0.7.tgz",
-      "integrity": "sha512-lz+Rsax7QrBEnHI+WwZ+A4jxqLypTl6RvKP5jI3P2vxG3975fTj2qOvxl1/npxuJ7wCerrvYcBqwZd743iPSdg=="
-    },
-    "node_modules/@edsilv/key-codes": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/@edsilv/key-codes/-/key-codes-1.0.0.tgz",
-      "integrity": "sha512-L4w4xW7u8Gqd1Nsr0S7Q/H+HTHTkiwgZT6cFKPPlw6Fo6lk31hTufdIaYJ9RNk8c05nLAnn2ZI1DzQwIDr6+iA=="
-    },
     "node_modules/@edsilv/stencil-redux": {
       "version": "0.1.1",
       "resolved": "https://registry.npmjs.org/@edsilv/stencil-redux/-/stencil-redux-0.1.1.tgz",
@@ -1869,20 +1859,6 @@
         "redux": "^4.0.1"
       }
     },
-    "node_modules/@edsilv/utils": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/@edsilv/utils/-/utils-1.0.2.tgz",
-      "integrity": "sha512-sSq1Rcixz/X1GoL9Bf1LdAZ4icfxXARj5RgysG2eJhSuM/7QXZEbOzoayo/DJro1qJgC4j8oXCneSeKuN9qa+A==",
-      "dependencies": {
-        "@types/jquery": "^2.0.40",
-        "@types/node": "8.10.52"
-      }
-    },
-    "node_modules/@edsilv/utils/node_modules/@types/node": {
-      "version": "8.10.52",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-8.10.52.tgz",
-      "integrity": "sha512-2RbW7WXeLex6RI+kQSxq6Ym0GiVcODeQ4Km7MnnTX5BHdOGQnqVa+s6AUmAW+OFYAJ8wv9QxvNZXm7/kBdGTVw=="
-    },
     "node_modules/@emnapi/core": {
       "version": "1.8.1",
       "resolved": "https://registry.npmjs.org/@emnapi/core/-/core-1.8.1.tgz",
@@ -2066,12 +2042,13 @@
       "dev": true
     },
     "node_modules/@esbuild/aix-ppc64": {
-      "version": "0.24.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.24.2.tgz",
-      "integrity": "sha512-thpVCb/rhxE/BnMLQ7GReQLLN8q9qbHmI55F4489/ByVg2aQaQ6kbcLb6FHkocZzQhxc4gx0sCk0tJkKBFzDhA==",
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.25.12.tgz",
+      "integrity": "sha512-Hhmwd6CInZ3dwpuGTF8fJG6yoWmsToE+vYgD4nytZVxcu1ulHpUQRAB1UJ8+N1Am3Mz4+xOByoQoSZf4D+CpkA==",
       "cpu": [
         "ppc64"
       ],
+      "license": "MIT",
       "optional": true,
       "os": [
         "aix"
@@ -2081,12 +2058,13 @@
       }
     },
     "node_modules/@esbuild/android-arm": {
-      "version": "0.24.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.24.2.tgz",
-      "integrity": "sha512-tmwl4hJkCfNHwFB3nBa8z1Uy3ypZpxqxfTQOcHX+xRByyYgunVbZ9MzUUfb0RxaHIMnbHagwAxuTL+tnNM+1/Q==",
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.25.12.tgz",
+      "integrity": "sha512-VJ+sKvNA/GE7Ccacc9Cha7bpS8nyzVv0jdVgwNDaR4gDMC/2TTRc33Ip8qrNYUcpkOHUT5OZ0bUcNNVZQ9RLlg==",
       "cpu": [
         "arm"
       ],
+      "license": "MIT",
       "optional": true,
       "os": [
         "android"
@@ -2096,12 +2074,13 @@
       }
     },
     "node_modules/@esbuild/android-arm64": {
-      "version": "0.24.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/android-arm64/-/android-arm64-0.24.2.tgz",
-      "integrity": "sha512-cNLgeqCqV8WxfcTIOeL4OAtSmL8JjcN6m09XIgro1Wi7cF4t/THaWEa7eL5CMoMBdjoHOTh/vwTO/o2TRXIyzg==",
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-arm64/-/android-arm64-0.25.12.tgz",
+      "integrity": "sha512-6AAmLG7zwD1Z159jCKPvAxZd4y/VTO0VkprYy+3N2FtJ8+BQWFXU+OxARIwA46c5tdD9SsKGZ/1ocqBS/gAKHg==",
       "cpu": [
         "arm64"
       ],
+      "license": "MIT",
       "optional": true,
       "os": [
         "android"
@@ -2111,12 +2090,13 @@
       }
     },
     "node_modules/@esbuild/android-x64": {
-      "version": "0.24.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/android-x64/-/android-x64-0.24.2.tgz",
-      "integrity": "sha512-B6Q0YQDqMx9D7rvIcsXfmJfvUYLoP722bgfBlO5cGvNVb5V/+Y7nhBE3mHV9OpxBf4eAS2S68KZztiPaWq4XYw==",
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-x64/-/android-x64-0.25.12.tgz",
+      "integrity": "sha512-5jbb+2hhDHx5phYR2By8GTWEzn6I9UqR11Kwf22iKbNpYrsmRB18aX/9ivc5cabcUiAT/wM+YIZ6SG9QO6a8kg==",
       "cpu": [
         "x64"
       ],
+      "license": "MIT",
       "optional": true,
       "os": [
         "android"
@@ -2126,12 +2106,13 @@
       }
     },
     "node_modules/@esbuild/darwin-arm64": {
-      "version": "0.24.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/darwin-arm64/-/darwin-arm64-0.24.2.tgz",
-      "integrity": "sha512-kj3AnYWc+CekmZnS5IPu9D+HWtUI49hbnyqk0FLEJDbzCIQt7hg7ucF1SQAilhtYpIujfaHr6O0UHlzzSPdOeA==",
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/darwin-arm64/-/darwin-arm64-0.25.12.tgz",
+      "integrity": "sha512-N3zl+lxHCifgIlcMUP5016ESkeQjLj/959RxxNYIthIg+CQHInujFuXeWbWMgnTo4cp5XVHqFPmpyu9J65C1Yg==",
       "cpu": [
         "arm64"
       ],
+      "license": "MIT",
       "optional": true,
       "os": [
         "darwin"
@@ -2141,12 +2122,13 @@
       }
     },
     "node_modules/@esbuild/darwin-x64": {
-      "version": "0.24.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/darwin-x64/-/darwin-x64-0.24.2.tgz",
-      "integrity": "sha512-WeSrmwwHaPkNR5H3yYfowhZcbriGqooyu3zI/3GGpF8AyUdsrrP0X6KumITGA9WOyiJavnGZUwPGvxvwfWPHIA==",
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/darwin-x64/-/darwin-x64-0.25.12.tgz",
+      "integrity": "sha512-HQ9ka4Kx21qHXwtlTUVbKJOAnmG1ipXhdWTmNXiPzPfWKpXqASVcWdnf2bnL73wgjNrFXAa3yYvBSd9pzfEIpA==",
       "cpu": [
         "x64"
       ],
+      "license": "MIT",
       "optional": true,
       "os": [
         "darwin"
@@ -2156,12 +2138,13 @@
       }
     },
     "node_modules/@esbuild/freebsd-arm64": {
-      "version": "0.24.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/freebsd-arm64/-/freebsd-arm64-0.24.2.tgz",
-      "integrity": "sha512-UN8HXjtJ0k/Mj6a9+5u6+2eZ2ERD7Edt1Q9IZiB5UZAIdPnVKDoG7mdTVGhHJIeEml60JteamR3qhsr1r8gXvg==",
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/freebsd-arm64/-/freebsd-arm64-0.25.12.tgz",
+      "integrity": "sha512-gA0Bx759+7Jve03K1S0vkOu5Lg/85dou3EseOGUes8flVOGxbhDDh/iZaoek11Y8mtyKPGF3vP8XhnkDEAmzeg==",
       "cpu": [
         "arm64"
       ],
+      "license": "MIT",
       "optional": true,
       "os": [
         "freebsd"
@@ -2171,12 +2154,13 @@
       }
     },
     "node_modules/@esbuild/freebsd-x64": {
-      "version": "0.24.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/freebsd-x64/-/freebsd-x64-0.24.2.tgz",
-      "integrity": "sha512-TvW7wE/89PYW+IevEJXZ5sF6gJRDY/14hyIGFXdIucxCsbRmLUcjseQu1SyTko+2idmCw94TgyaEZi9HUSOe3Q==",
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/freebsd-x64/-/freebsd-x64-0.25.12.tgz",
+      "integrity": "sha512-TGbO26Yw2xsHzxtbVFGEXBFH0FRAP7gtcPE7P5yP7wGy7cXK2oO7RyOhL5NLiqTlBh47XhmIUXuGciXEqYFfBQ==",
       "cpu": [
         "x64"
       ],
+      "license": "MIT",
       "optional": true,
       "os": [
         "freebsd"
@@ -2186,12 +2170,13 @@
       }
     },
     "node_modules/@esbuild/linux-arm": {
-      "version": "0.24.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-arm/-/linux-arm-0.24.2.tgz",
-      "integrity": "sha512-n0WRM/gWIdU29J57hJyUdIsk0WarGd6To0s+Y+LwvlC55wt+GT/OgkwoXCXvIue1i1sSNWblHEig00GBWiJgfA==",
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/linux-arm/-/linux-arm-0.25.12.tgz",
+      "integrity": "sha512-lPDGyC1JPDou8kGcywY0YILzWlhhnRjdof3UlcoqYmS9El818LLfJJc3PXXgZHrHCAKs/Z2SeZtDJr5MrkxtOw==",
       "cpu": [
         "arm"
       ],
+      "license": "MIT",
       "optional": true,
       "os": [
         "linux"
@@ -2201,12 +2186,13 @@
       }
     },
     "node_modules/@esbuild/linux-arm64": {
-      "version": "0.24.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-arm64/-/linux-arm64-0.24.2.tgz",
-      "integrity": "sha512-7HnAD6074BW43YvvUmE/35Id9/NB7BeX5EoNkK9obndmZBUk8xmJJeU7DwmUeN7tkysslb2eSl6CTrYz6oEMQg==",
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/linux-arm64/-/linux-arm64-0.25.12.tgz",
+      "integrity": "sha512-8bwX7a8FghIgrupcxb4aUmYDLp8pX06rGh5HqDT7bB+8Rdells6mHvrFHHW2JAOPZUbnjUpKTLg6ECyzvas2AQ==",
       "cpu": [
         "arm64"
       ],
+      "license": "MIT",
       "optional": true,
       "os": [
         "linux"
@@ -2216,12 +2202,13 @@
       }
     },
     "node_modules/@esbuild/linux-ia32": {
-      "version": "0.24.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-ia32/-/linux-ia32-0.24.2.tgz",
-      "integrity": "sha512-sfv0tGPQhcZOgTKO3oBE9xpHuUqguHvSo4jl+wjnKwFpapx+vUDcawbwPNuBIAYdRAvIDBfZVvXprIj3HA+Ugw==",
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/linux-ia32/-/linux-ia32-0.25.12.tgz",
+      "integrity": "sha512-0y9KrdVnbMM2/vG8KfU0byhUN+EFCny9+8g202gYqSSVMonbsCfLjUO+rCci7pM0WBEtz+oK/PIwHkzxkyharA==",
       "cpu": [
         "ia32"
       ],
+      "license": "MIT",
       "optional": true,
       "os": [
         "linux"
@@ -2231,12 +2218,13 @@
       }
     },
     "node_modules/@esbuild/linux-loong64": {
-      "version": "0.24.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-loong64/-/linux-loong64-0.24.2.tgz",
-      "integrity": "sha512-CN9AZr8kEndGooS35ntToZLTQLHEjtVB5n7dl8ZcTZMonJ7CCfStrYhrzF97eAecqVbVJ7APOEe18RPI4KLhwQ==",
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/linux-loong64/-/linux-loong64-0.25.12.tgz",
+      "integrity": "sha512-h///Lr5a9rib/v1GGqXVGzjL4TMvVTv+s1DPoxQdz7l/AYv6LDSxdIwzxkrPW438oUXiDtwM10o9PmwS/6Z0Ng==",
       "cpu": [
         "loong64"
       ],
+      "license": "MIT",
       "optional": true,
       "os": [
         "linux"
@@ -2246,12 +2234,13 @@
       }
     },
     "node_modules/@esbuild/linux-mips64el": {
-      "version": "0.24.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-mips64el/-/linux-mips64el-0.24.2.tgz",
-      "integrity": "sha512-iMkk7qr/wl3exJATwkISxI7kTcmHKE+BlymIAbHO8xanq/TjHaaVThFF6ipWzPHryoFsesNQJPE/3wFJw4+huw==",
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/linux-mips64el/-/linux-mips64el-0.25.12.tgz",
+      "integrity": "sha512-iyRrM1Pzy9GFMDLsXn1iHUm18nhKnNMWscjmp4+hpafcZjrr2WbT//d20xaGljXDBYHqRcl8HnxbX6uaA/eGVw==",
       "cpu": [
         "mips64el"
       ],
+      "license": "MIT",
       "optional": true,
       "os": [
         "linux"
@@ -2261,12 +2250,13 @@
       }
     },
     "node_modules/@esbuild/linux-ppc64": {
-      "version": "0.24.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-ppc64/-/linux-ppc64-0.24.2.tgz",
-      "integrity": "sha512-shsVrgCZ57Vr2L8mm39kO5PPIb+843FStGt7sGGoqiiWYconSxwTiuswC1VJZLCjNiMLAMh34jg4VSEQb+iEbw==",
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/linux-ppc64/-/linux-ppc64-0.25.12.tgz",
+      "integrity": "sha512-9meM/lRXxMi5PSUqEXRCtVjEZBGwB7P/D4yT8UG/mwIdze2aV4Vo6U5gD3+RsoHXKkHCfSxZKzmDssVlRj1QQA==",
       "cpu": [
         "ppc64"
       ],
+      "license": "MIT",
       "optional": true,
       "os": [
         "linux"
@@ -2276,12 +2266,13 @@
       }
     },
     "node_modules/@esbuild/linux-riscv64": {
-      "version": "0.24.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-riscv64/-/linux-riscv64-0.24.2.tgz",
-      "integrity": "sha512-4eSFWnU9Hhd68fW16GD0TINewo1L6dRrB+oLNNbYyMUAeOD2yCK5KXGK1GH4qD/kT+bTEXjsyTCiJGHPZ3eM9Q==",
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/linux-riscv64/-/linux-riscv64-0.25.12.tgz",
+      "integrity": "sha512-Zr7KR4hgKUpWAwb1f3o5ygT04MzqVrGEGXGLnj15YQDJErYu/BGg+wmFlIDOdJp0PmB0lLvxFIOXZgFRrdjR0w==",
       "cpu": [
         "riscv64"
       ],
+      "license": "MIT",
       "optional": true,
       "os": [
         "linux"
@@ -2291,12 +2282,13 @@
       }
     },
     "node_modules/@esbuild/linux-s390x": {
-      "version": "0.24.2",
-      "resolved": "https://registry.npmjs.org/@esbuild/linux-s390x/-/linux-s390x-0.24.2.tgz",
-      "integrity": "sha512-S0Bh0A53b0YHL2XEXC20bHLuGMOhFDO6GN4b3YjRLK//Ep3ql3erpNcPlEFed93hsQAjAQDNsvcK+hV90FubSw==",
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+      "resolved": "https://registry.npmjs.org/@esbuild/linux-s390x/-/linux-s390x-0.25.12.tgz",
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+        "mediaelement": "^5.0.1"
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+      "resolved": "https://registry.npmjs.org/mediaelement/-/mediaelement-5.1.2.tgz",
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       "license": "MIT",
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@@ -17512,6 +17518,16 @@
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+      "resolved": "https://registry.npmjs.org/promise-worker-transferable/-/promise-worker-transferable-1.0.4.tgz",
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@@ -19484,6 +19500,15 @@
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+      "resolved": "https://registry.npmjs.org/svg4everybody/-/svg4everybody-2.1.9.tgz",
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+      "license": "MIT",
+      "peer": true
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@@ -20477,22 +20504,17 @@
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+      "resolved": "https://registry.npmjs.org/universalviewer/-/universalviewer-4.3.0-rc4.tgz",
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-        "@iiif/iiif-tree-component": "2.0.6",
-        "@iiif/manifold": "^2.1.1",
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@@ -20500,38 +20522,60 @@
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         "jquery": "3.5.0",
         "jsviews": "1.0.15",
         "less-plugin-clean-css": "^1.5.1",
-        "manifesto.js": "^4.2.21",
+        "manifesto.js": "^4.3.0",
         "mediaelement": "4.2.15",
-        "mediaelement-plugins": "2.5.1",
-        "openseadragon": "4.1.1",
+        "mediaelement-plugins": "5.0.0",
+        "openseadragon": "4.0.0",
         "pdfjs-dist": "3.11.174",
         "pdfobject": "2.3.0",
-        "react": "^18.0.0",
-        "react-dom": "^18.0.0",
+        "react": "^19.0.0",
+        "react-dom": "^19.0.0",
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         "waveform-panel": "^1.2.0",
         "xss": "1.0.15",
-        "zustand": "^4.0.0-rc.0"
+        "zustand": "^5.0.3"
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-        "node": ">=18",
+        "node": ">=20",
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-      "resolved": "https://registry.npmjs.org/openseadragon/-/openseadragon-4.1.1.tgz",
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+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/openseadragon/-/openseadragon-4.0.0.tgz",
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+      "license": "BSD-3-Clause",
       "funding": {
         "url": "https://opencollective.com/openseadragon"
       }
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+    "node_modules/universalviewer/node_modules/react": {
+      "version": "19.2.4",
+      "resolved": "https://registry.npmjs.org/react/-/react-19.2.4.tgz",
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+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/universalviewer/node_modules/react-dom": {
+      "version": "19.2.4",
+      "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-19.2.4.tgz",
+      "integrity": "sha512-AXJdLo8kgMbimY95O2aKQqsz2iWi9jMgKJhRBAxECE4IFxfcazB2LmzloIoibJI3C12IlY20+KFaLv+71bUJeQ==",
+      "license": "MIT",
+      "dependencies": {
+        "scheduler": "^0.27.0"
+      },
+      "peerDependencies": {
+        "react": "^19.2.4"
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       "resolved": "https://registry.npmjs.org/react-intersection-observer/-/react-intersection-observer-9.16.0.tgz",
@@ -20546,6 +20590,41 @@
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+    "node_modules/universalviewer/node_modules/scheduler": {
+      "version": "0.27.0",
+      "resolved": "https://registry.npmjs.org/scheduler/-/scheduler-0.27.0.tgz",
+      "integrity": "sha512-eNv+WrVbKu1f3vbYJT/xtiF5syA5HPIMtf9IgY/nKg0sWqzAUEvqY/xm7OcZc/qafLx/iO9FgOmeSAp4v5ti/Q==",
+      "license": "MIT"
+    },
+    "node_modules/universalviewer/node_modules/zustand": {
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+      "resolved": "https://registry.npmjs.org/zustand/-/zustand-5.0.12.tgz",
+      "integrity": "sha512-i77ae3aZq4dhMlRhJVCYgMLKuSiZAaUPAct2AksxQ+gOtimhGMdXljRT21P5BNpeT4kXlLIckvkPM029OljD7g==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=12.20.0"
+      },
+      "peerDependencies": {
+        "@types/react": ">=18.0.0",
+        "immer": ">=9.0.6",
+        "react": ">=18.0.0",
+        "use-sync-external-store": ">=1.2.0"
+      },
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+        "@types/react": {
+          "optional": true
+        },
+        "immer": {
+          "optional": true
+        },
+        "react": {
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diff --git a/package.json b/package.json
index 9b83ec55..14ca8718 100644
--- a/package.json
+++ b/package.json
@@ -57,7 +57,7 @@
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     "typescript": "4.9.5",
     "ua-parser-js": "1.0.38",
-    "universalviewer": "4.1.0",
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     "vite": "5.4.21",
     "winston": "3.9.0"
   },