diff --git a/trytond/CHANGELOG b/trytond/CHANGELOG
index d718ade873..8816394b89 100644
--- a/trytond/CHANGELOG
+++ b/trytond/CHANGELOG
@@ -1,3 +1,4 @@
+* Compress RPC responses
 * Change _changed_values and _save_values properties to method
 * Add configuration for report convert command
 * Use process pool to run cron
diff --git a/trytond/trytond/protocols/jsonrpc.py b/trytond/trytond/protocols/jsonrpc.py
index db854c81ac..53bdb3cdef 100644
--- a/trytond/trytond/protocols/jsonrpc.py
+++ b/trytond/trytond/protocols/jsonrpc.py
@@ -2,6 +2,7 @@
 # this repository contains the full copyright notices and license terms.
 import base64
 import datetime
+import gzip
 import json
 from decimal import Decimal
 
@@ -188,6 +189,11 @@ class JSONProtocol:
             elif isinstance(data, Exception):
                 return InternalServerError(data)
             response = data
-        return Response(json.dumps(
-                response, cls=JSONEncoder, separators=(',', ':')),
-            content_type='application/json')
+        headers = {}
+        data = json.dumps(
+            response, cls=JSONEncoder, separators=(',', ':'))
+        if len(data) >= 1400 and 'gzip' in request.accept_encodings:
+            data = gzip.compress(data.encode('utf-8'), compresslevel=1)
+            headers['Content-Encoding'] = 'gzip'
+        return Response(
+            data, content_type='application/json', headers=headers)
diff --git a/trytond/trytond/protocols/xmlrpc.py b/trytond/trytond/protocols/xmlrpc.py
index 4ed0e8dc3d..dc1ff0fb13 100644
--- a/trytond/trytond/protocols/xmlrpc.py
+++ b/trytond/trytond/protocols/xmlrpc.py
@@ -1,6 +1,7 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
 import datetime
+import gzip
 import logging
 import xmlrpc.client as client
 # convert decimal to float before marshalling:
@@ -166,9 +167,14 @@ class XMLProtocol:
                 data = client.Fault(255, str(data))
             else:
                 data = (data,)
-            return Response(client.dumps(
-                    data, methodresponse=True, allow_none=True),
-                content_type='text/xml')
+            headers = {}
+            data = client.dumps(
+                data, methodresponse=True, allow_none=True)
+            if len(data) >= 1400 and 'gzip' in request.accept_encodings:
+                data = gzip.compress(data.encode('utf-8'), compresslevel=1)
+                headers['Content-Encoding'] = 'gzip'
+            return Response(
+                data, content_type='text/xml', headers=headers)
         else:
             if isinstance(data, UserWarning):
                 return Conflict(data)