diff --git a/kittens/tui/images.py b/kittens/tui/images.py
index 651edb026..256236823 100644
--- a/kittens/tui/images.py
+++ b/kittens/tui/images.py
@@ -131,6 +131,7 @@ SentImageKey = Tuple[int, int, int]
 
 class GraphicsCommand:
     a: GRT_a = 't'  # action
+    q: int = 0      # suppress responses
     f: GRT_f = 32   # image data format
     t: GRT_t = 'd'  # transmission medium
     s: int = 0        # sent image width
@@ -138,6 +139,7 @@ class GraphicsCommand:
     S: int = 0        # size of data to read from file
     O: int = 0        # offset of data to read from file
     i: int = 0        # image id
+    I: int = 0        # image number
     p: int = 0        # placement id
     o: Optional[GRT_o] = None  # type of compression
     m: GRT_m = 0    # 0 or 1 whether there is more chunked data
@@ -152,7 +154,7 @@ class GraphicsCommand:
     z: int = 0        # z-index
     d: GRT_d = 'a'  # what to delete
 
-    def serialize(self, payload: bytes = b'') -> bytes:
+    def serialize(self, payload: Union[bytes, str] = b'') -> bytes:
         items = []
         for k in GraphicsCommand.__annotations__:
             val: Union[str, None, int] = getattr(self, k)
@@ -166,6 +168,8 @@ class GraphicsCommand:
         w(','.join(items).encode('ascii'))
         if payload:
             w(b';')
+            if isinstance(payload, str):
+                payload = standard_b64encode(payload.encode('utf-8'))
             w(payload)
         w(b'\033\\')
         return b''.join(ans)
diff --git a/kitty/typing.pyi b/kitty/typing.pyi
index eb683c4c4..379c8aa16 100644
--- a/kitty/typing.pyi
+++ b/kitty/typing.pyi
@@ -41,12 +41,12 @@ from .window import Window as WindowType
 
 EdgeLiteral = Literal['left', 'top', 'right', 'bottom']
 MatchType = Literal['mime', 'ext', 'protocol', 'file', 'path', 'url', 'fragment_matches']
-GRT_a = Literal['t', 'T', 'q', 'p', 'd']
+GRT_a = Literal['t', 'T', 'q', 'p', 'd', 'f', 'a']
 GRT_f = Literal[24, 32, 100]
 GRT_t = Literal['d', 'f', 't', 's']
 GRT_o = Literal['z']
 GRT_m = Literal[0, 1]
-GRT_d = Literal['a', 'A', 'c', 'C', 'i', 'I', 'p', 'P', 'q', 'Q', 'x', 'X', 'y', 'Y', 'z', 'Z']
+GRT_d = Literal['a', 'A', 'c', 'C', 'i', 'I', 'p', 'P', 'q', 'Q', 'x', 'X', 'y', 'Y', 'z', 'Z', 'f', 'F']
 __all__ = (
     'EdgeLiteral', 'MatchType', 'GRT_a', 'GRT_f', 'GRT_t', 'GRT_o', 'GRT_m', 'GRT_d',
     'GraphicsCommandType', 'HandlerType', 'AbstractEventLoop', 'AddressFamily', 'Socket', 'CompletedProcess',