diff --git a/tabby-core/src/api/platform.ts b/tabby-core/src/api/platform.ts
index 74b0204ad42a8888dd2d01f932026758fee97c4d..d87b6fef6a4ea0521c538533817c2c336d75ee8d 100644
--- a/tabby-core/src/api/platform.ts
+++ b/tabby-core/src/api/platform.ts
@@ -21,6 +21,7 @@ export interface MessageBoxResult {
 
 export abstract class FileTransfer {
     abstract getName (): string
+    abstract getMode (): number
     abstract getSize (): number
     abstract close (): void
 
@@ -95,7 +96,7 @@ export abstract class PlatformService {
     abstract loadConfig (): Promise<string>
     abstract saveConfig (content: string): Promise<void>
 
-    abstract startDownload (name: string, size: number): Promise<FileDownload|null>
+    abstract startDownload (name: string, mode: number, size: number): Promise<FileDownload|null>
     abstract startUpload (options?: FileUploadOptions): Promise<FileUpload[]>
 
     startUploadFromDragEvent (event: DragEvent, multiple = false): FileUpload[] {
@@ -188,6 +189,10 @@ export class HTMLFileUpload extends FileUpload {
         return this.file.name
     }
 
+    getMode (): number {
+        return 0o644
+    }
+
     getSize (): number {
         return this.file.size
     }
diff --git a/tabby-electron/src/services/platform.service.ts b/tabby-electron/src/services/platform.service.ts
index ad076c835c6deaf185203e53e924c0edad93183f..ea78b668338b8edeba6f60c0966ab5997c0ddb0f 100644
--- a/tabby-electron/src/services/platform.service.ts
+++ b/tabby-electron/src/services/platform.service.ts
@@ -205,7 +205,7 @@ export class ElectronPlatformService extends PlatformService {
         }))
     }
 
-    async startDownload (name: string, size: number): Promise<FileDownload|null> {
+    async startDownload (name: string, mode: number, size: number): Promise<FileDownload|null> {
         const result = await this.electron.dialog.showSaveDialog(
             this.hostWindow.getWindow(),
             {
@@ -215,7 +215,7 @@ export class ElectronPlatformService extends PlatformService {
         if (!result.filePath) {
             return null
         }
-        const transfer = new ElectronFileDownload(result.filePath, size)
+        const transfer = new ElectronFileDownload(result.filePath, mode, size)
         await wrapPromise(this.zone, transfer.open())
         this.fileTransferStarted.next(transfer)
         return transfer
@@ -230,6 +230,7 @@ export class ElectronPlatformService extends PlatformService {
 
 class ElectronFileUpload extends FileUpload {
     private size: number
+    private mode: number
     private file: fs.FileHandle
     private buffer: Buffer
 
@@ -239,7 +240,9 @@ class ElectronFileUpload extends FileUpload {
     }
 
     async open (): Promise<void> {
-        this.size = (await fs.stat(this.filePath)).size
+        const stat = await fs.stat(this.filePath)
+        this.size = stat.size
+        this.mode = stat.mode
         this.file = await fs.open(this.filePath, 'r')
     }
 
@@ -247,6 +250,10 @@ class ElectronFileUpload extends FileUpload {
         return path.basename(this.filePath)
     }
 
+    getMode (): number {
+        return this.mode
+    }
+
     getSize (): number {
         return this.size
     }
@@ -267,19 +274,24 @@ class ElectronFileDownload extends FileDownload {
 
     constructor (
         private filePath: string,
+        private mode: number,
         private size: number,
     ) {
         super()
     }
 
     async open (): Promise<void> {
-        this.file = await fs.open(this.filePath, 'w')
+        this.file = await fs.open(this.filePath, 'w', this.mode)
     }
 
     getName (): string {
         return path.basename(this.filePath)
     }
 
+    getMode (): number {
+        return this.mode
+    }
+
     getSize (): number {
         return this.size
     }
diff --git a/tabby-ssh/src/components/sftpPanel.component.ts b/tabby-ssh/src/components/sftpPanel.component.ts
index a0f3f59abd433aa37611272b54d1cbdaccdaecf3..6207b7b3625bbf9fd46ef7134fb5776939883cc2 100644
--- a/tabby-ssh/src/components/sftpPanel.component.ts
+++ b/tabby-ssh/src/components/sftpPanel.component.ts
@@ -82,10 +82,10 @@ export class SFTPPanelComponent {
             if (stat.isDirectory) {
                 await this.navigate(item.fullPath)
             } else {
-                await this.download(item.fullPath, stat.size)
+                await this.download(item.fullPath, stat.mode, stat.size)
             }
         } else {
-            await this.download(item.fullPath, item.size)
+            await this.download(item.fullPath, item.mode, item.size)
         }
     }
 
@@ -117,8 +117,8 @@ export class SFTPPanelComponent {
         }
     }
 
-    async download (itemPath: string, size: number): Promise<void> {
-        const transfer = await this.platform.startDownload(path.basename(itemPath), size)
+    async download (itemPath: string, mode: number, size: number): Promise<void> {
+        const transfer = await this.platform.startDownload(path.basename(itemPath), mode, size)
         if (!transfer) {
             return
         }
diff --git a/tabby-terminal/src/features/debug.ts b/tabby-terminal/src/features/debug.ts
index e06b665c9e5ebc799a2e25488fabb86a8b7ab118..0653db9e8aa4f6646b9f134d2c3d43275dd0a147 100644
--- a/tabby-terminal/src/features/debug.ts
+++ b/tabby-terminal/src/features/debug.ts
@@ -71,7 +71,7 @@ export class DebugDecorator extends TerminalDecorator {
 
     private async saveFile (content: string, name: string) {
         const data = Buffer.from(content)
-        const transfer = await this.platform.startDownload(name, data.length)
+        const transfer = await this.platform.startDownload(name, 0o644, data.length)
         if (transfer) {
             transfer.write(data)
             transfer.close()
diff --git a/tabby-terminal/src/features/zmodem.ts b/tabby-terminal/src/features/zmodem.ts
index 445071be8079e88fd8abf413799ef00d91f33a87..7f82a20be7dab1ff3cb9e53a28a9d97109b3179d 100644
--- a/tabby-terminal/src/features/zmodem.ts
+++ b/tabby-terminal/src/features/zmodem.ts
@@ -113,7 +113,7 @@ export class ZModemDecorator extends TerminalDecorator {
         this.showMessage(terminal, colors.bgYellow.black(' Offered ') + ' ' + details.name, true)
         this.logger.info('offered', xfer)
 
-        const transfer = await this.platform.startDownload(details.name, details.size)
+        const transfer = await this.platform.startDownload(details.name, 0o644, details.size)
         if (!transfer) {
             this.showMessage(terminal, colors.bgRed.black(' Rejected ') + ' ' + details.name)
             xfer.skip()
diff --git a/tabby-web/src/platform.ts b/tabby-web/src/platform.ts
index 29ccd93898d04f1283ac2e74bfd9f456910a1d6d..91aac26f14879015f9b1db5389b970bae12701c9 100644
--- a/tabby-web/src/platform.ts
+++ b/tabby-web/src/platform.ts
@@ -108,8 +108,8 @@ export class WebPlatformService extends PlatformService {
         window.close()
     }
 
-    async startDownload (name: string, size: number): Promise<FileDownload|null> {
-        const transfer = new HTMLFileDownload(name, size)
+    async startDownload (name: string, mode: number, size: number): Promise<FileDownload|null> {
+        const transfer = new HTMLFileDownload(name, mode, size)
         this.fileTransferStarted.next(transfer)
         return transfer
     }
@@ -145,6 +145,7 @@ class HTMLFileDownload extends FileDownload {
 
     constructor (
         private name: string,
+        private mode: number,
         private size: number,
     ) {
         super()
@@ -154,6 +155,10 @@ class HTMLFileDownload extends FileDownload {
         return this.name
     }
 
+    getMode (): number {
+        return this.mode
+    }
+
     getSize (): number {
         return this.size
     }