diff --git a/desktop/src/main/ipc.ts b/desktop/src/main/ipc.ts
index 946f96578..9229d3b38 100644
--- a/desktop/src/main/ipc.ts
+++ b/desktop/src/main/ipc.ts
@@ -38,9 +38,9 @@ import {
     updateAndRestart,
     updateOnNextRestart,
 } from "./services/app-update";
-import { convertToJPEG, generateImageThumbnail } from "./services/image";
 import { ffmpegExec } from "./services/ffmpeg";
 import { getDirFiles } from "./services/fs";
+import { convertToJPEG, generateImageThumbnail } from "./services/image";
 import {
     clipImageEmbedding,
     clipTextEmbeddingIfAvailable,
@@ -147,12 +147,8 @@ export const attachIPCHandlers = () => {
 
     ipcMain.handle(
         "generateImageThumbnail",
-        (
-            _,
-            dataOrPath: Uint8Array | string,
-            maxDimension: number,
-            maxSize: number,
-        ) => generateImageThumbnail(dataOrPath, maxDimension, maxSize),
+        (_, imageData: Uint8Array, maxDimension: number, maxSize: number) =>
+            generateImageThumbnail(imageData, maxDimension, maxSize),
     );
 
     ipcMain.handle(
diff --git a/desktop/src/main/services/image.ts b/desktop/src/main/services/image.ts
index abeca5432..47a189244 100644
--- a/desktop/src/main/services/image.ts
+++ b/desktop/src/main/services/image.ts
@@ -20,8 +20,8 @@ export const convertToJPEG = async (imageData: Uint8Array) => {
         return new Uint8Array(await fs.readFile(outputFilePath));
     } finally {
         try {
-            deleteTempFile(inputFilePath);
-            deleteTempFile(outputFilePath);
+            await deleteTempFile(inputFilePath);
+            await deleteTempFile(outputFilePath);
         } catch (e) {
             log.error("Ignoring error when cleaning up temp files", e);
         }
@@ -63,20 +63,11 @@ const imageMagickPath = () =>
     path.join(isDev ? "build" : process.resourcesPath, "image-magick");
 
 export const generateImageThumbnail = async (
-    dataOrPath: Uint8Array | string,
+    imageData: Uint8Array,
     maxDimension: number,
     maxSize: number,
 ): Promise<Uint8Array> => {
-    let inputFilePath: string;
-    let isInputFileTemporary: boolean;
-    if (typeof dataOrPath == "string") {
-        inputFilePath = dataOrPath;
-        isInputFileTemporary = false;
-    } else {
-        inputFilePath = await makeTempFilePath();
-        isInputFileTemporary = true;
-    }
-
+    const inputFilePath = await makeTempFilePath();
     const outputFilePath = await makeTempFilePath(".jpeg");
 
     // Construct the command first, it may throw NotAvailable on win32.
@@ -89,8 +80,8 @@ export const generateImageThumbnail = async (
     );
 
     try {
-        if (dataOrPath instanceof Uint8Array)
-            await fs.writeFile(inputFilePath, dataOrPath);
+        if (imageData instanceof Uint8Array)
+            await fs.writeFile(inputFilePath, imageData);
 
         let thumbnail: Uint8Array;
         do {
@@ -107,8 +98,8 @@ export const generateImageThumbnail = async (
         return thumbnail;
     } finally {
         try {
-            if (isInputFileTemporary) await deleteTempFile(inputFilePath);
-            deleteTempFile(outputFilePath);
+            await deleteTempFile(inputFilePath);
+            await deleteTempFile(outputFilePath);
         } catch (e) {
             log.error("Ignoring error when cleaning up temp files", e);
         }
diff --git a/desktop/src/preload.ts b/desktop/src/preload.ts
index 728e8d012..0464022b0 100644
--- a/desktop/src/preload.ts
+++ b/desktop/src/preload.ts
@@ -128,13 +128,13 @@ const convertToJPEG = (imageData: Uint8Array): Promise<Uint8Array> =>
     ipcRenderer.invoke("convertToJPEG", imageData);
 
 const generateImageThumbnail = (
-    dataOrPath: Uint8Array | string,
+    imageData: Uint8Array,
     maxDimension: number,
     maxSize: number,
 ): Promise<Uint8Array> =>
     ipcRenderer.invoke(
         "generateImageThumbnail",
-        dataOrPath,
+        imageData,
         maxDimension,
         maxSize,
     );
diff --git a/web/apps/photos/src/services/upload/thumbnail.ts b/web/apps/photos/src/services/upload/thumbnail.ts
index a23e68a2e..6be2ea6bd 100644
--- a/web/apps/photos/src/services/upload/thumbnail.ts
+++ b/web/apps/photos/src/services/upload/thumbnail.ts
@@ -84,7 +84,7 @@ const generateImageThumbnail = async (
     const available = !moduleState.isNativeThumbnailCreationNotAvailable;
     if (electron && available) {
         try {
-            return await generateImageThumbnailInElectron(electron, file);
+            return await generateImageThumbnailInElectron(electron, blob);
         } catch (e) {
             if (e.message == CustomErrorMessage.NotAvailable) {
                 moduleState.isNativeThumbnailCreationNotAvailable = true;
@@ -102,8 +102,9 @@ const generateImageThumbnailInElectron = async (
     blob: Blob,
 ): Promise<Uint8Array> => {
     const startTime = Date.now();
+    const data = new Uint8Array(await blob.arrayBuffer());
     const jpegData = await electron.generateImageThumbnail(
-        inputFile,
+        data,
         maxThumbnailDimension,
         maxThumbnailSize,
     );
diff --git a/web/packages/next/types/ipc.ts b/web/packages/next/types/ipc.ts
index b7ad3c0f5..6ba5c7832 100644
--- a/web/packages/next/types/ipc.ts
+++ b/web/packages/next/types/ipc.ts
@@ -205,6 +205,7 @@ export interface Electron {
      * {@link CustomErrorMessage.NotAvailable} message.
      *
      * @param imageData The raw image data (the contents of the image file).
+     *
      * @returns JPEG data of the converted image.
      */
     convertToJPEG: (imageData: Uint8Array) => Promise<Uint8Array>;
@@ -220,8 +221,8 @@ export interface Electron {
      * not yet possible, this function will throw an error with the
      * {@link CustomErrorMessage.NotAvailable} message.
      *
-     * @param dataOrPath The data-of or path-to the image whose thumbnail we
-     * want.
+     * @param imageData The raw image data (the contents of the image file)
+     * whose thumbnail we want to generate.
      * @param maxDimension The maximum width or height of the generated
      * thumbnail.
      * @param maxSize Maximum size (in bytes) of the generated thumbnail.
@@ -229,7 +230,7 @@ export interface Electron {
      * @returns JPEG data of the generated thumbnail.
      */
     generateImageThumbnail: (
-        dataOrPath: Uint8Array | string,
+        imageData: Uint8Array,
         maxDimension: number,
         maxSize: number,
     ) => Promise<Uint8Array>;