diff --git a/src/CmdHiddenFileSync.ts b/src/CmdHiddenFileSync.ts
index 844fdb6..94ac5a2 100644
--- a/src/CmdHiddenFileSync.ts
+++ b/src/CmdHiddenFileSync.ts
@@ -436,7 +436,7 @@ export class HiddenFileSync extends LiveSyncCommands {
                         type: "newnote",
                     };
                 } else {
-                    if (isDocContentSame(old.data, content) && !forceWrite) {
+                    if (await isDocContentSame(old.data, content) && !forceWrite) {
                         // Logger(`STORAGE --> DB:${file.path}: (hidden) Not changed`, LOG_LEVEL_VERBOSE);
                         return;
                     }
@@ -560,7 +560,7 @@ export class HiddenFileSync extends LiveSyncCommands {
                 } else {
                     const contentBin = await this.plugin.vaultAccess.adapterReadBinary(filename);
                     const content = await encodeBinary(contentBin);
-                    if (isDocContentSame(content, fileOnDB.data) && !force) {
+                    if (await isDocContentSame(content, fileOnDB.data) && !force) {
                         // Logger(`STORAGE <-- DB:${filename}: skipped (hidden) Not changed`, LOG_LEVEL_VERBOSE);
                         return true;
                     }
diff --git a/src/CmdPluginAndTheirSettings.ts b/src/CmdPluginAndTheirSettings.ts
index f863e47..7eff7aa 100644
--- a/src/CmdPluginAndTheirSettings.ts
+++ b/src/CmdPluginAndTheirSettings.ts
@@ -228,7 +228,7 @@ export class PluginAndTheirSettings extends LiveSyncCommands {
                         if (old !== false) {
                             const oldData = { data: old.data, deleted: old._deleted };
                             const newData = { data: d.data, deleted: d._deleted };
-                            if (isDocContentSame(oldData.data, newData.data) && oldData.deleted == newData.deleted) {
+                            if (await isDocContentSame(oldData.data, newData.data) && oldData.deleted == newData.deleted) {
                                 Logger(`Nothing changed:${m.name}`);
                                 return;
                             }
diff --git a/src/GlobalHistory.svelte b/src/GlobalHistory.svelte
index 07f56b1..e3c7c75 100644
--- a/src/GlobalHistory.svelte
+++ b/src/GlobalHistory.svelte
@@ -66,10 +66,7 @@
 
                 for (const revInfo of reversedRevs) {
                     if (revInfo.status == "available") {
-                        const doc =
-                            (!isPlain && showDiffInfo) || (checkStorageDiff && revInfo.rev == docA._rev)
-                                ? await db.getDBEntry(path, { rev: revInfo.rev }, false, false, true)
-                                : await db.getDBEntryMeta(path, { rev: revInfo.rev }, true);
+                        const doc = (!isPlain && showDiffInfo) || (checkStorageDiff && revInfo.rev == docA._rev) ? await db.getDBEntry(path, { rev: revInfo.rev }, false, false, true) : await db.getDBEntryMeta(path, { rev: revInfo.rev }, true);
                         if (doc === false) continue;
                         const rev = revInfo.rev;
 
@@ -112,11 +109,11 @@
                                     let result = false;
                                     if (isPlainText(docA.path)) {
                                         const data = await plugin.vaultAccess.adapterRead(abs);
-                                        result = isDocContentSame(data, doc.data);
+                                        result = await isDocContentSame(data, doc.data);
                                     } else {
                                         const data = await plugin.vaultAccess.adapterReadBinary(abs);
                                         const dataEEncoded = createBinaryBlob(data);
-                                        result = isDocContentSame(dataEEncoded, doc.data);
+                                        result = await isDocContentSame(dataEEncoded, doc.data);
                                     }
                                     if (result) {
                                         diffDetail += " ⚖️";
diff --git a/src/SerializedFileAccess.ts b/src/SerializedFileAccess.ts
index f7078eb..a353a5d 100644
--- a/src/SerializedFileAccess.ts
+++ b/src/SerializedFileAccess.ts
@@ -1,6 +1,7 @@
 import { type App, TFile, type DataWriteOptions, TFolder, TAbstractFile } from "./deps";
 import { serialized } from "./lib/src/lock";
 import type { FilePath } from "./lib/src/types";
+import { createBinaryBlob, isDocContentSame } from "./lib/src/utils";
 function getFileLockKey(file: TFile | TFolder | string) {
     return `fl:${typeof (file) == "string" ? file : file.path}`;
 }
@@ -65,9 +66,22 @@ export class SerializedFileAccess {
 
     async vaultModify(file: TFile, data: string | ArrayBuffer | Uint8Array, options?: DataWriteOptions) {
         if (typeof (data) === "string") {
-            return await serialized(getFileLockKey(file), () => this.app.vault.modify(file, data, options));
+            return await serialized(getFileLockKey(file), async () => {
+                const oldData = await this.app.vault.read(file);
+                if (data === oldData) return false
+                await this.app.vault.modify(file, data, options)
+                return true;
+            }
+            );
         } else {
-            return await serialized(getFileLockKey(file), () => this.app.vault.modifyBinary(file, toArrayBuffer(data), options));
+            return await serialized(getFileLockKey(file), async () => {
+                const oldData = await this.app.vault.readBinary(file);
+                if (isDocContentSame(createBinaryBlob(oldData), createBinaryBlob(data))) {
+                    return false;
+                }
+                await this.app.vault.modifyBinary(file, toArrayBuffer(data), options)
+                return true;
+            });
         }
     }
     async vaultCreate(path: string, data: string | ArrayBuffer | Uint8Array, options?: DataWriteOptions): Promise<TFile> {
diff --git a/src/lib b/src/lib
index f108111..18822f1 160000
--- a/src/lib
+++ b/src/lib
@@ -1 +1 @@
-Subproject commit f108111ae86561f8b25bef12cb9452a27d9f46ce
+Subproject commit 18822f1e02113e8300e4c5d4622b530c04a4ff11
diff --git a/src/main.ts b/src/main.ts
index 97188bd..2854de2 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -33,7 +33,7 @@ import { GlobalHistoryView, VIEW_TYPE_GLOBAL_HISTORY } from "./GlobalHistoryView
 import { LogPaneView, VIEW_TYPE_LOG } from "./LogPaneView";
 import { mapAllTasksWithConcurrencyLimit, processAllTasksWithConcurrencyLimit } from "./lib/src/task";
 import { LRUCache } from "./lib/src/LRUCache";
-import { SerializedFileAccess } from "./SerializedFileAccess";
+import { SerializedFileAccess } from "./SerializedFileAccess.ts";
 
 setNoticeClass(Notice);
 
@@ -1306,17 +1306,22 @@ Note: We can always able to read V1 format. It will be progressively converted.
         await this.ensureDirectoryEx(path);
         try {
             let outFile;
+            let isChanged = true;
             if (mode == "create") {
                 const normalizedPath = normalizePath(path);
                 await this.vaultAccess.vaultCreate(normalizedPath, writeData, { ctime: doc.ctime, mtime: doc.mtime, });
                 outFile = this.vaultAccess.getAbstractFileByPath(normalizedPath) as TFile;
             } else {
-                await this.vaultAccess.vaultModify(file, writeData, { ctime: doc.ctime, mtime: doc.mtime });
+                isChanged = await this.vaultAccess.vaultModify(file, writeData, { ctime: doc.ctime, mtime: doc.mtime });
                 outFile = this.vaultAccess.getAbstractFileByPath(getPathFromTFile(file)) as TFile;
             }
-            Logger(msg + path);
-            this.vaultAccess.touch(outFile);
-            this.app.vault.trigger(mode, outFile);
+            if (isChanged) {
+                Logger(msg + path);
+                this.vaultAccess.touch(outFile);
+                this.app.vault.trigger(mode, outFile);
+            } else {
+                Logger(msg + "Skipped, the file is the same: " + path, LOG_LEVEL_VERBOSE);
+            }
 
         } catch (ex) {
             Logger(msg + "ERROR, Could not write: " + path, LOG_LEVEL_NOTICE);
@@ -1370,12 +1375,12 @@ Note: We can always able to read V1 format. It will be progressively converted.
                 try {
                     const releaser = await semaphore.acquire(1);
                     serialized(`dbchanged-${path}`, async () => {
-                        Logger(`Applying ${path} (${entry._id}: ${entry._rev}) change...`, LOG_LEVEL_VERBOSE);
+                        Logger(`Applying ${path} (${entry._id}: ${entry._rev?.substring(0, 5)}) change...`, LOG_LEVEL_VERBOSE);
                         await this.handleDBChangedAsync(entry);
-                        Logger(`Applied ${path} (${entry._id}:${entry._rev}) change...`);
+                        Logger(`Applied ${path} (${entry._id}:${entry._rev?.substring(0, 5)}) change...`);
                     }).finally(() => { releaser(); });
                 } catch (ex) {
-                    Logger(`Failed to apply the change of ${path} (${entry._id}:${entry._rev})`);
+                    Logger(`Failed to apply the change of ${path} (${entry._id}:${entry._rev?.substring(0, 5)})`);
                 }
             } while (this.queuedEntries.length > 0);
         } finally {
@@ -1501,11 +1506,11 @@ Note: We can always able to read V1 format. It will be progressively converted.
         const skipOldFile = this.settings.skipOlderFilesOnSync && false; //patched temporary.
         // Do not handle internal files if the feature has not been enabled.
         if (isInternalMetadata(doc._id) && !this.settings.syncInternalFiles) {
-            Logger(`Skipped: ${path} (${doc._id}, ${doc._rev}) Hidden file sync is disabled.`, LOG_LEVEL_VERBOSE);
+            Logger(`Skipped: ${path} (${doc._id}, ${doc._rev?.substring(0, 10)}) Hidden file sync is disabled.`, LOG_LEVEL_VERBOSE);
             return;
         }
         if (isCustomisationSyncMetadata(doc._id) && !this.settings.usePluginSync) {
-            Logger(`Skipped: ${path} (${doc._id}, ${doc._rev}) Customization sync is disabled.`, LOG_LEVEL_VERBOSE);
+            Logger(`Skipped: ${path} (${doc._id}, ${doc._rev?.substring(0, 10)}) Customization sync is disabled.`, LOG_LEVEL_VERBOSE);
             return;
         }
         // It is better for your own safety, not to handle the following files
@@ -1528,7 +1533,7 @@ Note: We can always able to read V1 format. It will be progressively converted.
                 const docMtime = ~~(doc.mtime / 1000);
                 //TODO: some margin required.
                 if (localMtime >= docMtime) {
-                    Logger(`${path} (${doc._id}, ${doc._rev}) Skipped, older than storage.`, LOG_LEVEL_VERBOSE);
+                    Logger(`${path} (${doc._id}, ${doc._rev?.substring(0, 10)}) Skipped, older than storage.`, LOG_LEVEL_VERBOSE);
                     return;
                 }
             }
@@ -1544,7 +1549,7 @@ Note: We can always able to read V1 format. It will be progressively converted.
         if ((!this.settings.readChunksOnline) && "children" in doc) {
             const c = await this.localDatabase.collectChunksWithCache(doc.children as DocumentID[]);
             const missing = c.filter((e) => e.chunk === false).map((e) => e.id);
-            if (missing.length > 0) Logger(`${path} (${doc._id}, ${doc._rev}) Queued (waiting ${missing.length} items)`, LOG_LEVEL_VERBOSE);
+            if (missing.length > 0) Logger(`${path} (${doc._id}, ${doc._rev?.substring(0, 10)}) Queued (waiting ${missing.length} items)`, LOG_LEVEL_VERBOSE);
             newQueue.missingChildren = missing;
             this.queuedFiles.push(newQueue);
         } else {
@@ -2265,12 +2270,14 @@ Or if you are sure know what had been happened, we can unlock the database from
 
                     const file = this.vaultAccess.getAbstractFileByPath(stripAllPrefixes(path)) as TFile;
                     if (file) {
-                        await this.vaultAccess.vaultModify(file, p);
-                        await this.updateIntoDB(file);
+                        if (await this.vaultAccess.vaultModify(file, p)) {
+                            await this.updateIntoDB(file);
+                        }
                     } else {
                         const newFile = await this.vaultAccess.vaultCreate(path, p);
                         await this.updateIntoDB(newFile);
                     }
+                    // ?
                     await this.pullFile(path);
                     Logger(`Automatically merged (sensible) :${path}`, LOG_LEVEL_INFO);
                     return true;
@@ -2562,7 +2569,7 @@ Or if you are sure know what had been happened, we can unlock the database from
                     const oldData = { data: old.data, deleted: old._deleted || old.deleted };
                     const newData = { data: d.data, deleted: d._deleted || d.deleted };
                     if (oldData.deleted != newData.deleted) return false;
-                    if (!isDocContentSame(old.data, newData.data)) return false;
+                    if (!await isDocContentSame(old.data, newData.data)) return false;
                     Logger(msg + "Skipped (not changed) " + fullPath + ((d._deleted || d.deleted) ? " (deleted)" : ""), LOG_LEVEL_VERBOSE);
                     return true;
                     // d._rev = old._rev;