diff --git a/native/expo-modules/comm-expo-package/android/src/main/java/app/comm/android/thumbhash/ThumbhashModule.kt b/native/expo-modules/comm-expo-package/android/src/main/java/app/comm/android/thumbhash/ThumbhashModule.kt
--- a/native/expo-modules/comm-expo-package/android/src/main/java/app/comm/android/thumbhash/ThumbhashModule.kt
+++ b/native/expo-modules/comm-expo-package/android/src/main/java/app/comm/android/thumbhash/ThumbhashModule.kt
@@ -53,7 +53,7 @@
 
     val rgba = bitmap.toRGBA()
     val thumbHash = ThumbHash.rgbaToThumbHash(bitmap.width, bitmap.height, rgba)
-    return Base64.encodeToString(thumbHash, Base64.DEFAULT)
+    return Base64.encodeToString(thumbHash, Base64.NO_WRAP)
   }
 
   // endregion
diff --git a/native/utils/thumbhash-module.js b/native/utils/thumbhash-module.js
--- a/native/utils/thumbhash-module.js
+++ b/native/utils/thumbhash-module.js
@@ -7,12 +7,18 @@
   +generateThumbHash: (photoURI: string) => Promise<string>,
 } = requireNativeModule('Thumbhash');
 
+const newLineRegex = /\n/g;
 async function generateThumbHash(photoURI: string): Promise<string> {
   invariant(
     platformUtilsModule.generateThumbHash,
     'generateThumbHash() unavailable. Check if Thumbhash expo-module is autolinked',
   );
-  return await platformUtilsModule.generateThumbHash(photoURI);
+
+  const rawThumbHash = await platformUtilsModule.generateThumbHash(photoURI);
+
+  // Sometimes native base64 modules encode the string with newlines,
+  // which breaks the thumbhash format
+  return rawThumbHash.replace(newLineRegex, '');
 }
 
 export { generateThumbHash };