diff --git a/js/skinParser.js b/js/skinParser.js
index eb0b7480..d431446b 100644
--- a/js/skinParser.js
+++ b/js/skinParser.js
@@ -51,31 +51,8 @@ const CURSORS = [
    */
 ];
 
-async function genImgFromFilename(zip, fileName) {
-  // Winamp only supports .bmp images, but WACUP set a precidence of supporting
-  // .png as well to reduce size. Since we care about size as well, we follow
-  // suit. Our default skin uses .png to save 14kb.
-  const file = await SkinParserUtils.getFileFromZip(
-    zip,
-    fileName,
-    "(png|bmp)",
-    "blob"
-  );
-  if (!file) {
-    return null;
-  }
-
-  const mimeType = `image/${SkinParserUtils.getFileExtension(file.name) ||
-    "*"}`;
-  // The spec for createImageBitmap() says the browser should try to sniff the
-  // mime type, but it looks like Firefox does not. So we specify it here
-  // explicitly.
-  const typedBlob = new Blob([file.contents], { type: mimeType });
-  return SkinParserUtils.getImgFromBlob(typedBlob);
-}
-
 async function genSpriteUrisFromFilename(zip, fileName) {
-  const img = await genImgFromFilename(zip, fileName);
+  const img = await SkinParserUtils.getImgFromFilename(zip, fileName);
   if (img == null) {
     return {};
   }
@@ -162,7 +139,7 @@ async function genRegion(zip) {
 }
 
 async function genGenTextSprites(zip) {
-  const img = await genImgFromFilename(zip, "GEN");
+  const img = await SkinParserUtils.getImgFromFilename(zip, "GEN");
   if (img == null) {
     return null;
   }
@@ -208,7 +185,7 @@ async function genGenTextSprites(zip) {
 }
 
 async function genGenExColors(zip) {
-  const img = await genImgFromFilename(zip, "GENEX");
+  const img = await SkinParserUtils.getImgFromFilename(zip, "GENEX");
   if (img == null) {
     return null;
   }
diff --git a/js/skinParserUtils.ts b/js/skinParserUtils.ts
index d3a7ebb0..8aaa2de4 100644
--- a/js/skinParserUtils.ts
+++ b/js/skinParserUtils.ts
@@ -75,3 +75,23 @@ export function getSpriteUrisFromImg(
   });
   return images;
 }
+
+export async function getImgFromFilename(
+  zip: JSZip,
+  fileName: string
+): Promise<HTMLImageElement | ImageBitmap | null> {
+  // Winamp only supports .bmp images, but WACUP set a precidence of supporting
+  // .png as well to reduce size. Since we care about size as well, we follow
+  // suit. Our default skin uses .png to save 14kb.
+  const file = await getFileFromZip(zip, fileName, "(png|bmp)", "blob");
+  if (!file) {
+    return null;
+  }
+
+  const mimeType = `image/${getFileExtension(file.name) || "*"}`;
+  // The spec for createImageBitmap() says the browser should try to sniff the
+  // mime type, but it looks like Firefox does not. So we specify it here
+  // explicitly.
+  const typedBlob = new Blob([file.contents], { type: mimeType });
+  return getImgFromBlob(typedBlob);
+}