diff --git a/pytchat/processors/html_archiver.py b/pytchat/processors/html_archiver.py
index e33d2fc..f969a3a 100644
--- a/pytchat/processors/html_archiver.py
+++ b/pytchat/processors/html_archiver.py
@@ -3,6 +3,7 @@ import os
 import re
 import time
 from base64 import standard_b64encode
+from concurrent.futures import ThreadPoolExecutor
 from .chat_processor import ChatProcessor
 from .default.processor import DefaultProcessor
 from ..exceptions import UnknownConnectionError
@@ -54,6 +55,7 @@ class HTMLArchiver(ChatProcessor):
         self.header = [HEADER_HTML]
         self.body = ['<body>\n', '<table class="css">\n', self._parse_table_header(fmt_headers)]
         self.callback = callback
+        self.executor = ThreadPoolExecutor(max_workers=10)
 
     def _checkpath(self, filepath):
         splitter = os.path.splitext(os.path.basename(filepath))
@@ -80,7 +82,7 @@ class HTMLArchiver(ChatProcessor):
             save_path : str :
                 Actual save path of file.
             total_lines : int :
-                count of total lines written to the file.
+                Count of total lines written to the file.
         """
         if chat_components is None or len(chat_components) == 0:
             return
@@ -132,7 +134,7 @@ class HTMLArchiver(ChatProcessor):
     def _set_emoji_table(self, item: dict):
         emoji_id = item['id']
         if emoji_id not in self.emoji_table:
-            self.emoji_table.setdefault(emoji_id, self._encode_img(item['url']))
+            self.emoji_table.setdefault(emoji_id, self.executor.submit(self._encode_img, item['url']))
         return emoji_id
 
     def _stylecode(self, name, code, width, height):
@@ -143,11 +145,12 @@ class HTMLArchiver(ChatProcessor):
     def _create_styles(self):
         return '\n'.join(('<style type="text/css">',
                           TABLE_CSS,
-                          '\n'.join(self._stylecode(key, self.emoji_table[key], 24, 24)
+                          '\n'.join(self._stylecode(key, self.emoji_table[key].result(), 24, 24)
                                 for key in self.emoji_table.keys()),
                           '</style>\n'))
     
     def finalize(self):
+        self.executor.shutdown()
         self.header.extend([self._create_styles(), '</head>\n'])
         self.body.extend(['</table>\n</body>\n</html>'])
         with open(self.save_path, mode='a', encoding='utf-8') as f:
