diff --git a/comfy/cli_args.py b/comfy/cli_args.py
index f31d59411..a92fc0dba 100644
--- a/comfy/cli_args.py
+++ b/comfy/cli_args.py
@@ -179,6 +179,8 @@ parser.add_argument(
 
 parser.add_argument("--user-directory", type=is_valid_directory, default=None, help="Set the ComfyUI user directory with an absolute path. Overrides --base-directory.")
 
+parser.add_argument("--disable-compres-response-body", action="store_true", help="Disable compressing response body.")
+
 if comfy.options.args_parsing:
     args = parser.parse_args()
 else:
diff --git a/comfy/ldm/modules/attention.py b/comfy/ldm/modules/attention.py
index 44aec59a6..975faa21f 100644
--- a/comfy/ldm/modules/attention.py
+++ b/comfy/ldm/modules/attention.py
@@ -1,4 +1,6 @@
 import math
+import sys
+
 import torch
 import torch.nn.functional as F
 from torch import nn, einsum
@@ -16,7 +18,11 @@ if model_management.xformers_enabled():
     import xformers.ops
 
 if model_management.sage_attention_enabled():
-    from sageattention import sageattn
+    try:
+        from sageattention import sageattn
+    except ModuleNotFoundError:
+        logging.error(f"\n\nTo use the `--use-sage-attention` feature, the `sageattention` package must be installed first.\ncommand:\n\t{sys.executable} -m pip install sageattention")
+        exit(-1)
 
 from comfy.cli_args import args
 import comfy.ops
diff --git a/server.py b/server.py
index 88c163fc7..7b8608479 100644
--- a/server.py
+++ b/server.py
@@ -52,6 +52,22 @@ async def cache_control(request: web.Request, handler):
         response.headers.setdefault('Cache-Control', 'no-cache')
     return response
 
+
+@web.middleware
+async def compress_body(request: web.Request, handler):
+    accept_encoding = request.headers.get("Accept-Encoding", "")
+    response: web.Response = await handler(request)
+    if args.disable_compres_response_body:
+        return response
+    if not isinstance(response, web.Response):
+        return response
+    if response.content_type not in ["application/json", "text/plain"]:
+        return response
+    if response.body and "gzip" in accept_encoding:
+        response.enable_compression()
+    return response
+
+
 def create_cors_middleware(allowed_origin: str):
     @web.middleware
     async def cors_middleware(request: web.Request, handler):
@@ -149,7 +165,7 @@ class PromptServer():
         self.client_session:Optional[aiohttp.ClientSession] = None
         self.number = 0
 
-        middlewares = [cache_control]
+        middlewares = [cache_control, compress_body]
         if args.enable_cors_header:
             middlewares.append(create_cors_middleware(args.enable_cors_header))
         else: