diff --git a/examples/browser-umd/.eslintrc.json b/examples/browser-umd/.eslintrc.json
deleted file mode 100644
index bc9eef4..0000000
--- a/examples/browser-umd/.eslintrc.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "env": {
-    "browser": true
-  },
-  "globals": {
-    "MediaInfo": "readonly"
-  },
-  "parserOptions": {
-    "sourceType": "script"
-  }
-}
diff --git a/examples/browser-umd/example.js b/examples/browser-umd/example.js
index f9142a0..f90c569 100644
--- a/examples/browser-umd/example.js
+++ b/examples/browser-umd/example.js
@@ -6,22 +6,11 @@ const onChangeFile = (mediainfo) => {
   if (file) {
     output.value = 'Working…'
 
-    const getSize = () => file.size
-
-    const readChunk = (chunkSize, offset) =>
-      new Promise((resolve, reject) => {
-        const reader = new FileReader()
-        reader.onload = (event) => {
-          if (event.target.error) {
-            reject(event.target.error)
-          }
-          resolve(new Uint8Array(event.target.result))
-        }
-        reader.readAsArrayBuffer(file.slice(offset, offset + chunkSize))
-      })
+    const readChunk = async (chunkSize, offset) =>
+      new Uint8Array(await file.slice(offset, offset + chunkSize).arrayBuffer())
 
     mediainfo
-      .analyzeData(getSize, readChunk)
+      .analyzeData(file.size, readChunk)
       .then((result) => {
         output.value = result
       })