diff --git a/ahserver/filestorage.py b/ahserver/filestorage.py
index 2ab7dd0..cbe29cd 100644
--- a/ahserver/filestorage.py
+++ b/ahserver/filestorage.py
@@ -8,7 +8,7 @@ import aiofiles
 import json
 import time
 import base64
-
+from urllib.parse import quote
 from appPublic.worker import get_event_loop
 from appPublic.folderUtils import _mkdir
 from appPublic.base64_to_file import base64_to_file, getFilenameFromBase64
@@ -212,6 +212,10 @@ async def downloadfile2url(request, url, headers=None, params=None, data={}, met
 	url = env.entire_url('/idfile?path=') + env.quote(webpath)
 	return url
 
+def get_baseurl():
+	baseurl = os.environ.get('BASEURL')
+	return baseurl
+
 async def base642file(b64str):
 	filename = getFilenameFromBase64(b64str)
 	if ',' in b64str:
@@ -223,4 +227,24 @@ async def base642file(b64str):
 		await f.write(binary_data)
 	return fpath
 
+async def b64media2url(request, mediafile):
+    # env = request._run_ns
+    # entire_url = env.entire_url
+    if mediafile.startswith('http://') or mediafile.startswith('https://'):
+        return mediafile
+	webpath = mediafile
+    if mediafile.startswith('data:'):
+		fpath = await base642file(mediafile)
+		webpath = FileStorage().webpath(fpath)
+    elif len(mediafile) > 8000:
+        e = Exception(f'mediafile is not a media file')
+        exception(f'{e}')
+        return ''
+	if request:
+		url = entire_url('/idfile?path=') + quote(webpath)
+		return url
+	baseurl = get_baseurl()
+	if baseurl:
+		return f'{baseurl}/idfile?path={quote(mediafile)}'
+	return f'/idfile?path={quote(mediafile)}'
 
diff --git a/ahserver/globalEnv.py b/ahserver/globalEnv.py
index b327c1e..1aadb7a 100644
--- a/ahserver/globalEnv.py
+++ b/ahserver/globalEnv.py
@@ -37,6 +37,7 @@ import datetime
 from openpyxl import Workbook
 from tempfile import mktemp
 
+from base64_to_file import hex2base64
 from appPublic.jsonConfig import getConfig
 from appPublic.dictObject import DictObject
 from appPublic.Singleton import GlobalEnv
@@ -77,7 +78,7 @@ from .error import (
 
 from .filetest import current_fileno
 from .filedownload import path_download, file_download, file_response
-from .filestorage import FileStorage, downloadfile2url
+from .filestorage import FileStorage, downloadfile2url, get_baseurl, b64media2url
 from .serverenv import ServerEnv
 
 def server_error(errcode):
@@ -105,10 +106,6 @@ def basic_auth_headers(user, passwd):
 		"Authorization":ba.encode()
 	}
 
-def get_baseurl():
-	baseurl = os.environ.get('BASEURL')
-	return baseurl
-
 async def stream_response(request, async_data_generator, content_type='text/html'):
 	res = StreamResponse()
 	if content_type:
@@ -335,6 +332,8 @@ def initEnv():
 	g.return_error = return_error
 	g.openai_401 = openai_401
 	g.get_baseurl = get_baseurl
+	g.hex2base64 = hex2base64
+	g.b64media2url = b64media2url
 	g.openai_403 = openai_403
 	g.openai_400 = openai_400
 	g.openai_429 = openai_429