diff --git a/packages/excalidraw/data/image.ts b/packages/excalidraw/data/image.ts
index 4d72a26a4..750e52141 100644
--- a/packages/excalidraw/data/image.ts
+++ b/packages/excalidraw/data/image.ts
@@ -77,19 +77,20 @@ export const encodePngMetadata = async ({
     }),
   );
 
-  let metadataChunk;
+  let metadataChunk: TEXtChunk | ITXtChunk;
   try {
     if (useITXt) {
-      metadataChunk = iTXt.encodeSync(
-        MIME_TYPES.excalidraw,
-        encodedData,
-        { 
-          compressed: true,
-          compressedMethod: 0,
-          language: "en",
-          translated: ""
-        }
-      );
+      metadataChunk = {
+        name: "iTXt",
+        data: iTXt.encodeSync({
+          keyword: MIME_TYPES.excalidraw,
+          text: encodedData,
+          compressionFlag: true,
+          compressionMethod: 0,
+          languageTag: "en",
+          translatedKeyword: ""
+        })
+      };
     } else {
       throw new Error("Fallback to tEXt");
     }
diff --git a/packages/excalidraw/global.d.ts b/packages/excalidraw/global.d.ts
index 6a142748e..52ad3b52c 100644
--- a/packages/excalidraw/global.d.ts
+++ b/packages/excalidraw/global.d.ts
@@ -43,13 +43,17 @@ declare module "png-chunk-text" {
   function decode(data: Uint8Array): { keyword: string; text: string };
 }
 declare module "png-chunk-itxt" {
-  function encodeSync(
-    keyword: string,
-    text: string,
-    options?: { compressed?: boolean; compressedMethod: number; language?: string; translated?: string },
-  ): { name: "iTXt"; data: Uint8Array };
-  function decodeSync (data: Uint8Array): { 
-    keyword: string; 
+  function encodeSync(options: {
+    keyword: string;
+    text: string;
+    compressionFlag?: boolean;
+    compressionMethod?: number;
+    languageTag?: string;
+    translatedKeyword?: string;
+  }): Uint8Array;
+
+  function decodeSync(data: Uint8Array): {
+    keyword: string;
     text: string;
     compressed?: boolean;
     compressedMethod?: number;