diff --git a/src/api/heicConvert.ts b/src/api/heicConvert.ts
index ff9db658c..69da8daf0 100644
--- a/src/api/heicConvert.ts
+++ b/src/api/heicConvert.ts
@@ -1,7 +1,7 @@
 import { ipcRenderer } from 'electron/renderer';
 import { isPlatformMac } from '../utils/main';
 
-export async function convertHEIC(fileData: Uint8Array) {
+export async function convertHEIC(fileData: Uint8Array): Promise<Uint8Array> {
     if (!isPlatformMac()) {
         throw Error('native heic conversion only supported on mac');
     }
diff --git a/src/preload.ts b/src/preload.ts
index e657b4425..48fcf50e8 100644
--- a/src/preload.ts
+++ b/src/preload.ts
@@ -36,6 +36,8 @@ import { selectRootDirectory, logToDisk } from './api/common';
 import { fixHotReloadNext12 } from './utils/preload';
 import { isFolder, getDirFiles } from './api/fs';
 
+import { convertHEIC } from './api/heicConvert';
+
 fixHotReloadNext12();
 
 const windowObject: any = window;
@@ -77,4 +79,5 @@ windowObject['ElectronAPIs'] = {
     updateWatchMappingSyncedFiles,
     updateWatchMappingIgnoredFiles,
     logToDisk,
+    convertHEIC,
 };