diff --git a/apps/client/src/widgets/type_widgets/file/Pdf.tsx b/apps/client/src/widgets/type_widgets/file/Pdf.tsx
index 638d5fb30..7b784865f 100644
--- a/apps/client/src/widgets/type_widgets/file/Pdf.tsx
+++ b/apps/client/src/widgets/type_widgets/file/Pdf.tsx
@@ -6,7 +6,7 @@ import FBlob from "../../../entities/fblob";
 import FNote from "../../../entities/fnote";
 import server from "../../../services/server";
 import { useViewModeConfig } from "../../collections/NoteList";
-import { useTriliumOption } from "../../react/hooks";
+import { useTriliumOption, useTriliumOptionBool } from "../../react/hooks";
 
 const VARIABLE_WHITELIST = new Set([
     "root-background",
@@ -25,6 +25,7 @@ export default function PdfPreview({ note, blob, componentId, noteContext }: {
     const { onLoad } = useStyleInjection(iframeRef);
     const historyConfig = useViewModeConfig(note, "pdfHistory");
     const [ locale ] = useTriliumOption("locale");
+    const [ newLayout ] = useTriliumOptionBool("newLayout");
 
     useEffect(() => {
         function handleMessage(event: MessageEvent) {
@@ -154,7 +155,7 @@ export default function PdfPreview({ note, blob, componentId, noteContext }: {
         <iframe
             ref={iframeRef}
             class="pdf-preview"
-            src={`pdfjs/web/viewer.html?file=../../api/notes/${note.noteId}/open&lang=${locale}`}
+            src={`pdfjs/web/viewer.html?file=../../api/notes/${note.noteId}/open&lang=${locale}&sidebar=${newLayout ? "0" : "1"}`}
             onLoad={() => {
                 const win = iframeRef.current?.contentWindow;
                 if (win) {
diff --git a/packages/pdfjs-viewer/src/custom.css b/packages/pdfjs-viewer/src/custom.css
index ac5b49035..9e68e8eec 100644
--- a/packages/pdfjs-viewer/src/custom.css
+++ b/packages/pdfjs-viewer/src/custom.css
@@ -12,3 +12,7 @@
         box-shadow: 0 0 3px rgba(0, 0, 0, 0.2);
     }
 }
+
+#toolbarViewerLeft > .toolbarButtonSpacer:first-child {
+    display: none !important;
+}
diff --git a/packages/pdfjs-viewer/src/custom.ts b/packages/pdfjs-viewer/src/custom.ts
index 8dec7bcaf..4f7adbcd7 100644
--- a/packages/pdfjs-viewer/src/custom.ts
+++ b/packages/pdfjs-viewer/src/custom.ts
@@ -7,8 +7,12 @@ import { setupPdfLayers } from "./layers";
 const LOG_EVENT_BUS = false;
 
 async function main() {
-    console.log("Hi");
-    interceptPersistence(getCustomAppOptions());
+    const urlParams = new URLSearchParams(window.location.search);
+    if (urlParams.get("sidebar") === "0") {
+        hideSidebar();
+    }
+
+    interceptPersistence(getCustomAppOptions(urlParams));
 
     // Wait for the PDF viewer application to be available.
     while (!window.PDFViewerApplication) {
@@ -31,14 +35,27 @@ async function main() {
     await app.initializedPromise;
 };
 
-function getCustomAppOptions() {
-    const urlParams = new URLSearchParams(window.location.search);
+function hideSidebar() {
+    window.TRILIUM_HIDE_SIDEBAR = true;
+    const toggleButtonEl = document.getElementById("viewsManagerToggleButton");
+    if (toggleButtonEl) {
+        const spacer = toggleButtonEl.nextElementSibling.nextElementSibling;
+        if (spacer.classList.contains("toolbarButtonSpacer")) {
+            spacer.remove();
+        }
+        toggleButtonEl.remove();
+    }
+}
 
+function getCustomAppOptions(urlParams: URLSearchParams) {
     return {
         localeProperties: {
             // Read from URL query
             lang: urlParams.get("lang") || "en"
-        }
+        },
+        // Control sidebar visibility via query parameter
+        // sidebarViewOnLoad: -1 disables sidebar, 0 = NONE (default)
+        viewsManager: null
     };
 }
 
diff --git a/packages/pdfjs-viewer/viewer/viewer.mjs b/packages/pdfjs-viewer/viewer/viewer.mjs
index d4186b8b9..078e85588 100644
--- a/packages/pdfjs-viewer/viewer/viewer.mjs
+++ b/packages/pdfjs-viewer/viewer/viewer.mjs
@@ -18609,7 +18609,7 @@ function getViewerConfiguration() {
       imageAltTextSettingsSeparator: document.getElementById("imageAltTextSettingsSeparator"),
       documentPropertiesButton: document.getElementById("documentProperties")
     },
-    viewsManager: {
+    viewsManager: window.TRILIUM_HIDE_SIDEBAR ? null : {
       outerContainer: document.getElementById("outerContainer"),
       toggleButton: document.getElementById("viewsManagerToggleButton"),
       sidebarContainer: document.getElementById("viewsManager"),