diff --git a/binhop.py b/binhop.py
index ec0b9e7..ccd6435 100644
--- a/binhop.py
+++ b/binhop.py
@@ -8,9 +8,10 @@ import binwalk
 import os
 from aiohttp_compress import compress_middleware
 from aiohttp import web
+from typing import List, Tuple, Dict, Union
 
 
-async def scan_file(filename, base_dir):
+async def scan_file(filename: str, base_dir: str) -> List:
     try:
         scan = binwalk.scan(
             filename,
@@ -26,7 +27,7 @@ async def scan_file(filename, base_dir):
         print("Critical failure: ", e)
 
 
-async def build_listing(path):
+async def build_listing(path: str) -> Tuple[int, int, Dict]:
     result = {}
     num_files, num_dirs = 0, 0
     for item in os.listdir(path):
@@ -41,7 +42,7 @@ async def build_listing(path):
     return num_files, num_dirs, result
 
 
-async def upload_file(request):
+async def upload_file(request: web.Request) -> web.json_response:
     reader = await request.multipart()
     field = await reader.next()
     assert field.name == "file"
@@ -119,18 +120,18 @@ async def upload_file(request):
     return web.json_response(response_data)
 
 
-async def serve_index(request):
+async def serve_index(request: web.Request) -> web.FileResponse:
     return web.FileResponse("index.html")
 
 
-async def serve_static(request):
+async def serve_static(request: web.Request) -> Union[web.FileResponse, web.HTTPNotFound]:
     path = request.path[1:]
     if not path.startswith("static/"):
         return web.HTTPNotFound()
     return web.FileResponse(path)
 
 
-async def main():
+async def main() -> None:
     app = web.Application()
     app.middlewares.append(compress_middleware)
 
diff --git a/static/binhop.js b/static/binhop.js
index 3718889..46c58d0 100644
--- a/static/binhop.js
+++ b/static/binhop.js
@@ -209,14 +209,10 @@ async function process_upload(file) {
     });
   
     if (response.ok) {
-    // if (1 === 1) {
       const data = await response.json();
-    //   const json = '{"meta":{"name":"miwifi_r4av2_firmware_6bdd4_2.30.500.bin","sizeb":13632488,"sha1":"6cefd9d5de3b80799d0341b19043d108624dcaca","md5":"639616a5b70983903ccdd019a7a6bdd4","sig_quant":411,"duration":"00:05.457"},"offsets":[{"start":960,"end":13630770,"d":"LZMA compressed data"},{"start":1704660,"end":13621866,"d":"Squashfs filesystem"},{"start":4534008,"end":5267984,"d":"xz compressed data"},{"start":5258380,"end":5267984,"d":"ASCII cpio archive"}]}';
-    //   const data = JSON.parse(json);
 
       const container = document.querySelector('.container');
-  
-      // visualization
+      
       container.innerHTML = `
 <div id="blob-row">
 <canvas id="blob" width="1200px" height="60px" style="background-color: #18232c;"></canvas>