diff --git a/httpie/client.py b/httpie/client.py
index 9407181d..e7c8267d 100644
--- a/httpie/client.py
+++ b/httpie/client.py
@@ -283,7 +283,8 @@ def make_request_kwargs(
             body=data,
             body_read_callback=request_body_read_callback,
             chunked=args.chunked,
-            content_length_header_value=headers.get('Content-Length')
+            offline=args.offline,
+            content_length_header_value=headers.get('Content-Length'),
         ),
         'auth': args.auth,
         'params': args.params.items(),
diff --git a/httpie/core.py b/httpie/core.py
index e0db9c2f..a316d4ea 100644
--- a/httpie/core.py
+++ b/httpie/core.py
@@ -201,7 +201,7 @@ def program(
             if is_request:
                 if not initial_request:
                     initial_request = message
-                    is_streamed_upload = not args.offline and not isinstance(
+                    is_streamed_upload = not isinstance(
                         message.body, (str, bytes))
                     if with_body:
                         with_body = not is_streamed_upload
diff --git a/httpie/uploads.py b/httpie/uploads.py
index f7dc0f5e..c65bfd33 100644
--- a/httpie/uploads.py
+++ b/httpie/uploads.py
@@ -39,11 +39,20 @@ def prepare_request_body(
     body_read_callback: Callable[[bytes], bytes],
     content_length_header_value: int = None,
     chunked=False,
+    offline=False,
 ) -> Union[str, bytes, IO, MultipartEncoder, ChunkedUploadStream]:
+
+    is_file_like = hasattr(body, 'read')
+
     if isinstance(body, RequestDataDict):
         body = urlencode(body, doseq=True)
 
-    if not hasattr(body, 'read'):
+    if offline:
+        if is_file_like:
+            return body.read()
+        return body
+
+    if not is_file_like:
         if chunked:
             body = ChunkedUploadStream(
                 # Pass the entire body as one chunk.
diff --git a/tests/test_httpie.py b/tests/test_httpie.py
index f4fe1b37..02208793 100644
--- a/tests/test_httpie.py
+++ b/tests/test_httpie.py
@@ -10,7 +10,7 @@ from httpie.context import Environment
 from httpie.status import ExitStatus
 from httpie.cli.exceptions import ParseError
 from utils import MockEnvironment, StdinBytesIO, http, HTTP_OK
-from fixtures import FILE_PATH, FILE_CONTENT
+from fixtures import FILE_PATH, FILE_CONTENT, FILE_PATH_ARG
 
 import httpie
 
@@ -193,6 +193,48 @@ def test_offline():
     assert 'GET /foo' in r
 
 
+def test_offline_form():
+    r = http(
+        '--offline',
+        '--form',
+        'https://this-should.never-resolve/foo',
+        'foo=bar'
+    )
+    assert 'POST /foo' in r
+    assert 'foo=bar' in r
+
+
+def test_offline_json():
+    r = http(
+        '--offline',
+        'https://this-should.never-resolve/foo',
+        'foo=bar'
+    )
+    assert 'POST /foo' in r
+    assert r.json == {'foo': 'bar'}
+
+
+def test_offline_multipart():
+    r = http(
+        '--offline',
+        '--multipart',
+        'https://this-should.never-resolve/foo',
+        'foo=bar'
+    )
+    assert 'POST /foo' in r
+    assert 'name="foo"' in r
+
+
+def test_offline_from_file():
+    r = http(
+        '--offline',
+        'https://this-should.never-resolve/foo',
+        f'@{FILE_PATH_ARG}'
+    )
+    assert 'POST /foo' in r
+    assert FILE_CONTENT in r
+
+
 def test_offline_download():
     """Absence of response should be handled gracefully with --download"""
     r = http(
diff --git a/tests/test_uploads.py b/tests/test_uploads.py
index 7dbf1716..7e3d2a88 100644
--- a/tests/test_uploads.py
+++ b/tests/test_uploads.py
@@ -170,7 +170,6 @@ class TestMultipartFormDataFileUpload:
             '--verbose',
             '--multipart',
             '--chunked',
-            # '--offline',
             HTTPBIN_WITH_CHUNKED_SUPPORT + '/post',
             'AAA=AAA',
         )
@@ -179,6 +178,25 @@ class TestMultipartFormDataFileUpload:
         assert 'name="AAA"' in r  # in request
         assert '"AAA": "AAA"', r  # in response
 
+    def test_multipart_preserve_order(self, httpbin):
+        r = http(
+            '--form',
+            '--offline',
+            httpbin + '/post',
+            'text_field=foo',
+            f'file_field@{FILE_PATH_ARG}',
+        )
+        assert r.index('text_field') < r.index('file_field')
+
+        r = http(
+            '--form',
+            '--offline',
+            httpbin + '/post',
+            f'file_field@{FILE_PATH_ARG}',
+            'text_field=foo',
+        )
+        assert r.index('text_field') > r.index('file_field')
+
 
 class TestRequestBodyFromFilePath:
     """
diff --git a/tests/utils.py b/tests/utils.py
index b84805e2..4359a47e 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -144,10 +144,9 @@ class StrCLIResponse(str, BaseCLIResponse):
             elif self.strip().startswith('{'):
                 # Looks like JSON body.
                 self._json = json.loads(self)
-            elif (self.count('Content-Type:') == 1
-                    and 'application/json' in self):
-                # Looks like a whole JSON HTTP message,
-                # try to extract its body.
+            elif self.count('Content-Type:') == 1:
+                # Looks like a HTTP message,
+                # try to extract JSON from its body.
                 try:
                     j = self.strip()[self.strip().rindex('\r\n\r\n'):]
                 except ValueError: