diff --git a/src/App.js b/src/App.js
index 5a6abf1..5aa7cee 100644
--- a/src/App.js
+++ b/src/App.js
@@ -10,41 +10,48 @@ const frameSize = 1080
 
 function getOrientation(file, callback) {
     // Source: http://stackoverflow.com/a/32490603
-    var reader = new FileReader();
+    // (With some modifications: I just made the code fit the style-guide.)
+    const reader = new FileReader()
 
     reader.onload = function (event) {
-        var view = new DataView(event.target.result);
+        const view = new DataView(event.target.result)
 
-        if (view.getUint16(0, false) !== 0xFFD8) return callback(-2);
+        if (view.getUint16(0, false) !== 0xFFD8) {
+            return callback(-2)
+        }
 
-        var length = view.byteLength,
-            offset = 2;
+        const length = view.byteLength
+        let offset = 2
 
         while (offset < length) {
-            var marker = view.getUint16(offset, false);
-            offset += 2;
+            const marker = view.getUint16(offset, false)
+            offset += 2
 
             if (marker === 0xFFE1) {
                 if (view.getUint32(offset += 2, false) !== 0x45786966) {
-                    return callback(-1);
+                    return callback(-1)
                 }
-                var little = view.getUint16(offset += 6, false) === 0x4949;
-                offset += view.getUint32(offset + 4, little);
-                var tags = view.getUint16(offset, little);
-                offset += 2;
+                const little = view.getUint16(offset += 6, false) === 0x4949
+                offset += view.getUint32(offset + 4, little)
+                const tags = view.getUint16(offset, little)
+                offset += 2
 
-                for (var i = 0; i < tags; i++)
-                    if (view.getUint16(offset + (i * 12), little) === 0x0112)
-                        return callback(view.getUint16(offset + (i * 12) + 8, little));
+                for (var i = 0; i < tags; i++) {
+                    if (view.getUint16(offset + (i * 12), little) === 0x0112) {
+                        return callback(view.getUint16(offset + (i * 12) + 8, little))
+                    }
+                }
+            } else if ((marker & 0xFF00) !== 0xFF00) {
+                break
+            } else {
+                offset += view.getUint16(offset, false)
             }
-            else if ((marker & 0xFF00) !== 0xFF00) break;
-            else offset += view.getUint16(offset, false);
         }
-        return callback(-1);
-    };
+        return callback(-1)
+    }
 
-    reader.readAsArrayBuffer(file.slice(0, 64 * 1024));
-};
+    reader.readAsArrayBuffer(file.slice(0, 64 * 1024))
+}
 
 function App() {
     const [frameURL, setFrameURL] = useState(null)