diff -r e13543d716b6 -r fc4af5685aa3 svghmi/fonts.py
--- a/svghmi/fonts.py	Wed Apr 24 02:15:33 2024 +0200
+++ b/svghmi/fonts.py	Fri Apr 26 09:24:26 2024 +0200
@@ -56,7 +56,7 @@
         "data:",
         mimetype,
         ";base64,",
-        b64encode(data).strip()])
+        b64encode(data).decode().strip()])
 
 def GetCSSFontFaceFromFontFile(filename):
     familyname, uniquename, formatname, mimetype = GetFontTypeAndFamilyName(filename)