html/forms/file-examples/file-with-accept.html

<!DOCTYPE html>
<html lang="en-US">
  <head>
    <title>File upload example with accept</title>
    <style>
      div {
        margin-bottom: 10px;
      }
    </style>
  </head>
  <body>
<form>
 <div>
   <label for="profile_pic">Choose file to upload</label>
   <input type="file" id="profile_pic" name="profile_pic" accept=".jpg, .jpeg, .png">
 </div>
 <div>
   <button>Submit</button>
 </div>
</form>
     <script>
       var test = document.querySelector('input');
     </script>
  </body>
</html>