diff --git a/apps/client/src/services/content_renderer.ts b/apps/client/src/services/content_renderer.ts
index aef64291f..7137efae7 100644
--- a/apps/client/src/services/content_renderer.ts
+++ b/apps/client/src/services/content_renderer.ts
@@ -194,7 +194,7 @@ function renderFile(entity: FNote | FAttachment, type: string, $renderedContent:
 
     if (type === "pdf") {
         const $pdfPreview = $('<iframe class="pdf-preview" style="width: 100%; flex-grow: 100;"></iframe>');
-        $pdfPreview.attr("src", openService.getUrlForDownload(`api/${entityType}/${entityId}/open`));
+        $pdfPreview.attr("src", openService.getUrlForDownload(`pdfjs/web/viewer.html?file=../../api/${entityType}/${entityId}/open`));
 
         $content.append($pdfPreview);
     } else if (type === "audio") {
@@ -218,14 +218,14 @@ function renderFile(entity: FNote | FAttachment, type: string, $renderedContent:
         //       in attachment list
         const $downloadButton = $(`
             <button class="file-download btn btn-primary" type="button">
-                <span class="bx bx-download"></span>
+                <span class="tn-icon bx bx-download"></span>
                 ${t("file_properties.download")}
             </button>
         `);
 
         const $openButton = $(`
             <button class="file-open btn btn-primary" type="button">
-                <span class="bx bx-link-external"></span>
+                <span class="tn-icon bx bx-link-external"></span>
                 ${t("file_properties.open")}
             </button>
         `);
diff --git a/apps/client/src/types-pdfjs.d.ts b/apps/client/src/types-pdfjs.d.ts
index 12756778e..3a4b3f16d 100644
--- a/apps/client/src/types-pdfjs.d.ts
+++ b/apps/client/src/types-pdfjs.d.ts
@@ -45,6 +45,10 @@ interface WithContext {
 
 interface PdfDocumentModifiedMessage extends WithContext {
     type: "pdfjs-viewer-document-modified";
+}
+
+interface PdfDocumentBlobResultMessage extends WithContext {
+    type: "pdfjs-viewer-blob";
     data: Uint8Array<ArrayBufferLike>;
 }
 
@@ -113,4 +117,5 @@ type PdfMessageEvent = MessageEvent<
     | PdfViewerThumbnailMessage
     | PdfViewerAttachmentsMessage
     | PdfViewerLayersMessage
+    | PdfDocumentBlobResultMessage
 >;
diff --git a/apps/client/src/widgets/react/hooks.tsx b/apps/client/src/widgets/react/hooks.tsx
index 7fade29b9..d0031fe07 100644
--- a/apps/client/src/widgets/react/hooks.tsx
+++ b/apps/client/src/widgets/react/hooks.tsx
@@ -170,6 +170,73 @@ export function useEditorSpacedUpdate({ note, noteType, noteContext, getData, on
     return spacedUpdate;
 }
 
+export function useBlobEditorSpacedUpdate({ note, noteType, noteContext, getData, onContentChange, dataSaved, updateInterval, replaceWithoutRevision }: {
+    noteType: NoteType;
+    note: FNote,
+    noteContext: NoteContext | null | undefined,
+    getData: () => Promise<Blob | undefined> | Blob | undefined,
+    onContentChange: (newBlob: FBlob) => void,
+    dataSaved?: (savedData: Blob) => void,
+    updateInterval?: number;
+    /** If set to true, then the blob is replaced directly without saving a revision before. */
+    replaceWithoutRevision?: boolean;
+}) {
+    const parentComponent = useContext(ParentComponent);
+    const blob = useNoteBlob(note, parentComponent?.componentId);
+
+    const callback = useMemo(() => {
+        return async () => {
+            const data = await getData();
+
+            // for read only notes
+            if (data === undefined || note.type !== noteType) return;
+
+            protected_session_holder.touchProtectedSessionIfNecessary(note);
+            await server.upload(`notes/${note.noteId}/file?replace=${replaceWithoutRevision ? "1" : "0"}`, new File([ data ], note.title, { type: note.mime }), parentComponent?.componentId);
+            dataSaved?.(data);
+        };
+    }, [ note, getData, dataSaved, noteType, parentComponent, replaceWithoutRevision ]);
+    const stateCallback = useCallback<StateCallback>((state) => {
+        noteContext?.setContextData("saveState", {
+            state
+        });
+    }, [ noteContext ]);
+    const spacedUpdate = useSpacedUpdate(callback, updateInterval, stateCallback);
+
+    // React to note/blob changes.
+    useEffect(() => {
+        if (!blob) return;
+        spacedUpdate.allowUpdateWithoutChange(() => onContentChange(blob));
+    }, [ blob ]);
+
+    // React to update interval changes.
+    useEffect(() => {
+        if (!updateInterval) return;
+        spacedUpdate.setUpdateInterval(updateInterval);
+    }, [ updateInterval ]);
+
+    // Save if needed upon switching tabs.
+    useTriliumEvent("beforeNoteSwitch", async ({ noteContext: eventNoteContext }) => {
+        if (eventNoteContext.ntxId !== noteContext?.ntxId) return;
+        await spacedUpdate.updateNowIfNecessary();
+    });
+
+    // Save if needed upon tab closing.
+    useTriliumEvent("beforeNoteContextRemove", async ({ ntxIds }) => {
+        if (!noteContext?.ntxId || !ntxIds.includes(noteContext.ntxId)) return;
+        await spacedUpdate.updateNowIfNecessary();
+    });
+
+    // Save if needed upon window/browser closing.
+    useEffect(() => {
+        const listener = () => spacedUpdate.isAllSavedAndTriggerUpdate();
+        appContext.addBeforeUnloadListener(listener);
+        return () => appContext.removeBeforeUnloadListener(listener);
+    }, []);
+
+    return spacedUpdate;
+}
+
 export function useNoteSavedData(noteId: string | undefined) {
     return useSyncExternalStore(
         (cb) => noteId ? noteSavedDataStore.subscribe(noteId, cb) : () => {},
diff --git a/apps/client/src/widgets/type_widgets/file/Pdf.tsx b/apps/client/src/widgets/type_widgets/file/Pdf.tsx
index ad4bb8f56..ee731448a 100644
--- a/apps/client/src/widgets/type_widgets/file/Pdf.tsx
+++ b/apps/client/src/widgets/type_widgets/file/Pdf.tsx
@@ -4,9 +4,8 @@ import appContext from "../../../components/app_context";
 import type NoteContext from "../../../components/note_context";
 import FBlob from "../../../entities/fblob";
 import FNote from "../../../entities/fnote";
-import server from "../../../services/server";
 import { useViewModeConfig } from "../../collections/NoteList";
-import { useTriliumEvent } from "../../react/hooks";
+import { useBlobEditorSpacedUpdate, useTriliumEvent } from "../../react/hooks";
 import PdfViewer from "./PdfViewer";
 
 export default function PdfPreview({ note, blob, componentId, noteContext }: {
@@ -18,12 +17,48 @@ export default function PdfPreview({ note, blob, componentId, noteContext }: {
     const iframeRef = useRef<HTMLIFrameElement>(null);
     const historyConfig = useViewModeConfig<HistoryData>(note, "pdfHistory");
 
+    const spacedUpdate = useBlobEditorSpacedUpdate({
+        note,
+        noteType: "file",
+        noteContext,
+        getData() {
+            if (!iframeRef.current?.contentWindow) return undefined;
+
+            return new Promise<Blob>((resolve, reject) => {
+                const timeout = setTimeout(() => {
+                    reject(new Error("Timeout while waiting for blob response"));
+                }, 10_000);
+
+                const onMessageReceived = (event: PdfMessageEvent) => {
+                    if (event.data.type !== "pdfjs-viewer-blob") return;
+                    if (event.data.noteId !== note.noteId || event.data.ntxId !== noteContext.ntxId) return;
+                    const blob = new Blob([event.data.data as Uint8Array<ArrayBuffer>], { type: note.mime });
+
+                    clearTimeout(timeout);
+                    window.removeEventListener("message", onMessageReceived);
+                    resolve(blob);
+                };
+
+                window.addEventListener("message", onMessageReceived);
+                iframeRef.current?.contentWindow?.postMessage({
+                    type: "trilium-request-blob",
+                }, window.location.origin);
+            });
+        },
+        onContentChange() {
+            if (iframeRef.current?.contentWindow) {
+                iframeRef.current.contentWindow.location.reload();
+            }
+        },
+        replaceWithoutRevision: true
+    });
+
     useEffect(() => {
         function handleMessage(event: PdfMessageEvent) {
             if (event.data?.type === "pdfjs-viewer-document-modified") {
-                const blob = new Blob([event.data.data as Uint8Array<ArrayBuffer>], { type: note.mime });
                 if (event.data.noteId === note.noteId && event.data.ntxId === noteContext.ntxId) {
-                    server.upload(`notes/${note.noteId}/file`, new File([blob], note.title, { type: note.mime }), componentId);
+                    spacedUpdate.resetUpdateTimer();
+                    spacedUpdate.scheduleUpdate();
                 }
             }
 
@@ -138,13 +173,6 @@ export default function PdfPreview({ note, blob, componentId, noteContext }: {
         };
     }, [ note, historyConfig, componentId, blob, noteContext ]);
 
-    // Refresh when blob changes.
-    useEffect(() => {
-        if (iframeRef.current?.contentWindow) {
-            iframeRef.current.contentWindow.location.reload();
-        }
-    }, [ blob ]);
-
     useTriliumEvent("customDownload", ({ ntxId }) => {
         if (ntxId !== noteContext.ntxId) return;
         iframeRef.current?.contentWindow?.postMessage({
@@ -171,6 +199,7 @@ export default function PdfPreview({ note, blob, componentId, noteContext }: {
                     });
                 }
             }}
+            editable
         />
     );
 }
diff --git a/apps/client/src/widgets/type_widgets/file/PdfViewer.tsx b/apps/client/src/widgets/type_widgets/file/PdfViewer.tsx
index 82bc4a2b9..7e6870dd4 100644
--- a/apps/client/src/widgets/type_widgets/file/PdfViewer.tsx
+++ b/apps/client/src/widgets/type_widgets/file/PdfViewer.tsx
@@ -15,12 +15,16 @@ interface PdfViewerProps extends Pick<HTMLAttributes<HTMLIFrameElement>, "tabInd
     /** Note: URLs are relative to /pdfjs/web. */
     pdfUrl: string;
     onLoad?(): void;
+    /**
+     * If set, enables editable mode which includes persistence of user settings, annotations as well as specific features such as sending table of contents data for the sidebar.
+     */
+    editable?: boolean;
 }
 
 /**
  * Reusable component displaying a PDF. The PDF needs to be provided via a URL.
  */
-export default function PdfViewer({ iframeRef: externalIframeRef, pdfUrl, onLoad }: PdfViewerProps) {
+export default function PdfViewer({ iframeRef: externalIframeRef, pdfUrl, onLoad, editable }: PdfViewerProps) {
     const iframeRef = useSyncedRef(externalIframeRef, null);
     const [ locale ] = useTriliumOption("locale");
     const [ newLayout ] = useTriliumOptionBool("newLayout");
@@ -30,7 +34,7 @@ export default function PdfViewer({ iframeRef: externalIframeRef, pdfUrl, onLoad
         <iframe
             ref={iframeRef}
             class="pdf-preview"
-            src={`pdfjs/web/viewer.html?file=${pdfUrl}&lang=${locale}&sidebar=${newLayout ? "0" : "1"}`}
+            src={`pdfjs/web/viewer.html?file=${pdfUrl}&lang=${locale}&sidebar=${newLayout ? "0" : "1"}&editable=${editable ? "1" : "0"}`}
             onLoad={() => {
                 injectStyles();
                 onLoad?.();
diff --git a/apps/server/docker/nginx.conf b/apps/server/docker/nginx.conf
index 3c207c1ce..e4e744b18 100644
--- a/apps/server/docker/nginx.conf
+++ b/apps/server/docker/nginx.conf
@@ -9,7 +9,7 @@ server {
         proxy_set_header X-Forwarded-Proto $scheme;
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection "upgrade";
-        proxy_pass http://host.docker.internal:8082; # change it to a different port if non-default is used
+        proxy_pass http://127.0.0.1:8082;
         proxy_cookie_path / /trilium/;
         proxy_read_timeout 90;
     }
diff --git a/apps/server/package.json b/apps/server/package.json
index 4dcd1c561..ecde42986 100644
--- a/apps/server/package.json
+++ b/apps/server/package.json
@@ -25,7 +25,8 @@
     "docker-start-rootless-debian": "pnpm docker-build-rootless-debian && docker run -p 8081:8080 triliumnext-rootless-debian",
     "docker-start-rootless-alpine": "pnpm docker-build-rootless-alpine && docker run -p 8081:8080 triliumnext-rootless-alpine",
     "generate-document": "cross-env TRILIUM_ENV=dev TRILIUM_DATA_DIR=data TRILIUM_RESOURCE_DIR=src tsx ./scripts/generate_document.ts",
-    "proxy-traefik": "docker run --name trilium-traefik --rm --network=host -v ./docker/traefik/traefik.yml:/etc/traefik/traefik.yml -v ./docker/traefik/dynamic:/etc/traefik/dynamic traefik:latest"
+    "proxy-traefik": "docker run --name trilium-traefik --rm --network=host -v ./docker/traefik/traefik.yml:/etc/traefik/traefik.yml:ro -v ./docker/traefik/dynamic:/etc/traefik/dynamic traefik:latest",
+    "proxy-nginx-subdir": "docker run --name trilium-nginx-subdir --rm --network=host -v ./docker/nginx.conf:/etc/nginx/conf.d/default.conf:ro nginx:latest"
   },
   "dependencies": {
     "better-sqlite3": "12.5.0",
diff --git a/apps/server/src/routes/api/files.ts b/apps/server/src/routes/api/files.ts
index 5be826fba..4a6e17382 100644
--- a/apps/server/src/routes/api/files.ts
+++ b/apps/server/src/routes/api/files.ts
@@ -28,7 +28,9 @@ function updateFile(req: Request) {
         };
     }
 
-    note.saveRevision();
+    if (req.query.replace !== "1") {
+        note.saveRevision();
+    }
 
     note.mime = file.mimetype.toLowerCase();
     note.save();
diff --git a/docs/User Guide/!!!meta.json b/docs/User Guide/!!!meta.json
index 272c4dbfe..50b9abb02 100644
--- a/docs/User Guide/!!!meta.json	
+++ b/docs/User Guide/!!!meta.json	
@@ -10201,6 +10201,13 @@
                                             "value": "bx bxs-file-pdf",
                                             "isInheritable": false,
                                             "position": 30
+                                        },
+                                        {
+                                            "type": "label",
+                                            "name": "shareAlias",
+                                            "value": "pdf",
+                                            "isInheritable": false,
+                                            "position": 60
                                         }
                                     ],
                                     "format": "markdown",
diff --git a/packages/pdfjs-viewer/scripts/build.ts b/packages/pdfjs-viewer/scripts/build.ts
index 6f9d3a53d..4a7e56880 100644
--- a/packages/pdfjs-viewer/scripts/build.ts
+++ b/packages/pdfjs-viewer/scripts/build.ts
@@ -3,6 +3,8 @@ import BuildHelper from "../../../scripts/build-utils";
 import { build as esbuild } from "esbuild";
 import { LOCALES } from "@triliumnext/commons";
 import { watch } from "chokidar";
+import { readFileSync, writeFileSync } from "fs";
+import packageJson from "../package.json" with { type: "json " };
 
 const build = new BuildHelper("packages/pdfjs-viewer");
 const watchMode = process.argv.includes("--watch");
@@ -16,6 +18,7 @@ async function main() {
     for (const file of [ "viewer.css", "viewer.html", "viewer.mjs" ]) {
         build.copy(`viewer/${file}`, `web/${file}`);
     }
+    patchCacheBuster(`${build.outDir}/web/viewer.html`);
     build.copy(`viewer/images`, `web/images`);
 
     // Copy the custom files.
@@ -34,8 +37,9 @@ async function main() {
     build.writeJson("web/locale/locale.json", localeMappings);
 
     // Copy pdfjs-dist files.
-    build.copy("/node_modules/pdfjs-dist/build/pdf.mjs", "build/pdf.mjs");
-    build.copy("/node_modules/pdfjs-dist/build/pdf.worker.mjs", "build/pdf.worker.mjs");
+    for (const file of [ "pdf.mjs", "pdf.worker.mjs", "pdf.sandbox.mjs" ]) {
+        build.copy(join("/node_modules/pdfjs-dist/build", file), join("build", file));
+    }
 
     if (watchMode) {
         watchForChanges();
@@ -59,6 +63,21 @@ async function rebuildCustomFiles() {
     build.copy("src/custom.css", "web/custom.css");
 }
 
+function patchCacheBuster(htmlFilePath: string) {
+    const version = packageJson.version;
+    console.log(`Versioned URLs: ${version}.`)
+    let html = readFileSync(htmlFilePath, "utf-8");
+    html = html.replace(
+        `<link rel="stylesheet" href="custom.css" />`,
+        `<link rel="stylesheet" href="custom.css?v=${version}" />`);
+    html = html.replace(
+        `<script src="custom.mjs" type="module"></script>`,
+        `<script src="custom.mjs?v=${version}" type="module"></script>`
+    );
+
+    writeFileSync(htmlFilePath, html);
+}
+
 function watchForChanges() {
     console.log("Watching for changes in src directory...");
     const watcher = watch(join(build.projectDir, "src"), {
diff --git a/packages/pdfjs-viewer/src/custom.ts b/packages/pdfjs-viewer/src/custom.ts
index c58e4104b..95b56a3c2 100644
--- a/packages/pdfjs-viewer/src/custom.ts
+++ b/packages/pdfjs-viewer/src/custom.ts
@@ -6,11 +6,14 @@ import { setupPdfLayers } from "./layers";
 
 async function main() {
     const urlParams = new URLSearchParams(window.location.search);
+    const isEditable = urlParams.get("editable") === "1";
     if (urlParams.get("sidebar") === "0") {
         hideSidebar();
     }
 
-    interceptPersistence(getCustomAppOptions(urlParams));
+    if (isEditable) {
+        interceptPersistence(getCustomAppOptions(urlParams));
+    }
 
     // Wait for the PDF viewer application to be available.
     while (!window.PDFViewerApplication) {
@@ -18,16 +21,18 @@ async function main() {
     }
     const app = window.PDFViewerApplication;
 
-    app.eventBus.on("documentloaded", () => {
-        manageSave();
-        manageDownload();
-        extractAndSendToc();
-        setupScrollToHeading();
-        setupActiveHeadingTracking();
-        setupPdfPages();
-        setupPdfAttachments();
-        setupPdfLayers();
-    });
+    if (isEditable) {
+        app.eventBus.on("documentloaded", () => {
+            manageSave();
+            manageDownload();
+            extractAndSendToc();
+            setupScrollToHeading();
+            setupActiveHeadingTracking();
+            setupPdfPages();
+            setupPdfAttachments();
+            setupPdfLayers();
+        });
+    }
     await app.initializedPromise;
 };
 
@@ -55,37 +60,38 @@ function getCustomAppOptions(urlParams: URLSearchParams) {
 function manageSave() {
     const app = window.PDFViewerApplication;
     const storage = app.pdfDocument.annotationStorage;
-    let timeout = null;
 
-    function debouncedSave() {
-        if (timeout) {
-            clearTimeout(timeout);
-        }
-        timeout = setTimeout(async () => {
-            if (!storage) return;
+    function onChange() {
+        if (!storage) return;
+        window.parent.postMessage({
+            type: "pdfjs-viewer-document-modified",
+            ntxId: window.TRILIUM_NTX_ID,
+            noteId: window.TRILIUM_NOTE_ID
+        } satisfies PdfDocumentModifiedMessage, window.location.origin);
+        storage.resetModified();
+    }
+
+    window.addEventListener("message", async (event) => {
+        if (event.origin !== window.location.origin) return;
+
+        if (event.data?.type === "trilium-request-blob") {
+            const app = window.PDFViewerApplication;
             const data = await app.pdfDocument.saveDocument();
             window.parent.postMessage({
-                type: "pdfjs-viewer-document-modified",
+                type: "pdfjs-viewer-blob",
                 data,
                 ntxId: window.TRILIUM_NTX_ID,
                 noteId: window.TRILIUM_NOTE_ID
-            } satisfies PdfDocumentModifiedMessage, window.location.origin);
-            storage.resetModified();
-            timeout = null;
-        }, 2_000);
-    }
-
-    app.pdfDocument.annotationStorage.onSetModified = debouncedSave;  // works great for most cases, including forms.
-    app.eventBus.on("annotationeditorcommit", debouncedSave);
-    app.eventBus.on("annotationeditorparamschanged", debouncedSave);
-    app.eventBus.on("annotationeditorstateschanged", evt => {   // needed for detecting when annotations are moved around.
-        const { activeEditorId } = evt;
-
-        // When activeEditorId becomes null, an editor was just committed
-        if (activeEditorId === null) {
-            debouncedSave();
+            } satisfies PdfDocumentBlobResultMessage, window.location.origin);
         }
     });
+
+    app.pdfDocument.annotationStorage.onSetModified = () => {
+        onChange();
+    };  // works great for most cases, including forms.
+    app.eventBus.on("switchannotationeditorparams", () => {
+        onChange();
+    });
 }
 
 function manageDownload() {
diff --git a/scripts/update-nightly-version.ts b/scripts/update-nightly-version.ts
index 2c0179331..71f5a9684 100644
--- a/scripts/update-nightly-version.ts
+++ b/scripts/update-nightly-version.ts
@@ -11,9 +11,9 @@
  *
  */
 
-import { fileURLToPath } from "url";
-import { dirname, join } from "path";
 import fs from "fs";
+import { dirname, join } from "path";
+import { fileURLToPath } from "url";
 
 function processVersion(version) {
     // Remove the beta suffix if any.
@@ -42,14 +42,19 @@ function patchPackageJson(packageJsonPath) {
 
 function main() {
     const scriptDir = dirname(fileURLToPath(import.meta.url));
-    
+
     const rootPackageJson = join(scriptDir, "..", "package.json");
     patchPackageJson(rootPackageJson);
-    
+
     for (const app of ["server", "client"]) {
         const appPackageJsonPath = join(scriptDir, "..", "apps", app, "package.json");
         patchPackageJson(appPackageJsonPath);
     }
+
+    for (const packageName of [ "pdfjs-viewer" ]) {
+        const packageJsonPath = join(scriptDir, "..", "packages", packageName, "package.json");
+        patchPackageJson(packageJsonPath);
+    }
 }
 
 main();