diff --git a/stubs/Pillow/METADATA.toml b/stubs/Pillow/METADATA.toml
index da80f0078..549fe9f6e 100644
--- a/stubs/Pillow/METADATA.toml
+++ b/stubs/Pillow/METADATA.toml
@@ -1 +1 @@
-version = "8.3.*"
+version = "9.0.*"
diff --git a/stubs/Pillow/PIL/BlpImagePlugin.pyi b/stubs/Pillow/PIL/BlpImagePlugin.pyi
index 3e004d9df..be0f72154 100644
--- a/stubs/Pillow/PIL/BlpImagePlugin.pyi
+++ b/stubs/Pillow/PIL/BlpImagePlugin.pyi
@@ -1,4 +1,5 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile, PyDecoder
 
@@ -18,8 +19,8 @@ def decode_dxt5(data): ...
 class BLPFormatError(NotImplementedError): ...
 
 class BlpImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["BLP"]]
+    format_description: ClassVar[str]
 
 class _BLPBaseDecoder(PyDecoder):
     magic: Any
diff --git a/stubs/Pillow/PIL/BmpImagePlugin.pyi b/stubs/Pillow/PIL/BmpImagePlugin.pyi
index c1712429e..3ebe58175 100644
--- a/stubs/Pillow/PIL/BmpImagePlugin.pyi
+++ b/stubs/Pillow/PIL/BmpImagePlugin.pyi
@@ -1,16 +1,16 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
 BIT2MODE: Any
 
 class BmpImageFile(ImageFile):
-    format_description: str
-    format: str
+    format_description: ClassVar[str]
+    format: ClassVar[Literal["BMP", "DIB", "CUR"]]
     COMPRESSIONS: Any
 
 class DibImageFile(BmpImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["DIB"]]
 
 SAVE: Any
diff --git a/stubs/Pillow/PIL/BufrStubImagePlugin.pyi b/stubs/Pillow/PIL/BufrStubImagePlugin.pyi
index 1fd49e1ba..812b4e6ff 100644
--- a/stubs/Pillow/PIL/BufrStubImagePlugin.pyi
+++ b/stubs/Pillow/PIL/BufrStubImagePlugin.pyi
@@ -1,7 +1,10 @@
+from typing import ClassVar
+from typing_extensions import Literal
+
 from .ImageFile import StubImageFile
 
 def register_handler(handler) -> None: ...
 
 class BufrStubImageFile(StubImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["BUFR"]]
+    format_description: ClassVar[str]
diff --git a/stubs/Pillow/PIL/CurImagePlugin.pyi b/stubs/Pillow/PIL/CurImagePlugin.pyi
index a6085cb8b..09d50204f 100644
--- a/stubs/Pillow/PIL/CurImagePlugin.pyi
+++ b/stubs/Pillow/PIL/CurImagePlugin.pyi
@@ -1,5 +1,7 @@
+from typing import ClassVar
+from typing_extensions import Literal
+
 from .BmpImagePlugin import BmpImageFile
 
 class CurImageFile(BmpImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["CUR"]]
diff --git a/stubs/Pillow/PIL/DcxImagePlugin.pyi b/stubs/Pillow/PIL/DcxImagePlugin.pyi
index 4b0389aae..f8f64a9fd 100644
--- a/stubs/Pillow/PIL/DcxImagePlugin.pyi
+++ b/stubs/Pillow/PIL/DcxImagePlugin.pyi
@@ -1,12 +1,12 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .PcxImagePlugin import PcxImageFile
 
 MAGIC: int
 
 class DcxImageFile(PcxImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["DCX"]]
     frame: Any
     fp: Any
     def seek(self, frame) -> None: ...
diff --git a/stubs/Pillow/PIL/DdsImagePlugin.pyi b/stubs/Pillow/PIL/DdsImagePlugin.pyi
index 10974403b..19893d9b6 100644
--- a/stubs/Pillow/PIL/DdsImagePlugin.pyi
+++ b/stubs/Pillow/PIL/DdsImagePlugin.pyi
@@ -1,3 +1,4 @@
+from typing import ClassVar
 from typing_extensions import Literal
 
 from .ImageFile import ImageFile
@@ -65,6 +66,6 @@ DXGI_FORMAT_BC7_UNORM: int
 DXGI_FORMAT_BC7_UNORM_SRGB: int
 
 class DdsImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["DDS"]]
+    format_description: ClassVar[str]
     def load_seek(self, pos) -> None: ...
diff --git a/stubs/Pillow/PIL/EpsImagePlugin.pyi b/stubs/Pillow/PIL/EpsImagePlugin.pyi
index 741f03ec8..7e76e8681 100644
--- a/stubs/Pillow/PIL/EpsImagePlugin.pyi
+++ b/stubs/Pillow/PIL/EpsImagePlugin.pyi
@@ -1,4 +1,5 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
@@ -7,7 +8,7 @@ field: Any
 gs_windows_binary: Any
 
 def has_ghostscript(): ...
-def Ghostscript(tile, size, fp, scale: int = ...): ...
+def Ghostscript(tile, size, fp, scale: int = ..., transparency: bool = ...): ...
 
 class PSFile:
     fp: Any
@@ -17,11 +18,11 @@ class PSFile:
     def readline(self): ...
 
 class EpsImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["EPS"]]
+    format_description: ClassVar[str]
     mode_map: Any
     im: Any
     mode: Any
     tile: Any
-    def load(self, scale: int = ...) -> None: ...
+    def load(self, scale: int = ..., transparency: bool = ...) -> None: ...
     def load_seek(self, *args, **kwargs) -> None: ...
diff --git a/stubs/Pillow/PIL/FitsStubImagePlugin.pyi b/stubs/Pillow/PIL/FitsStubImagePlugin.pyi
index ec94b35e3..cdd63750d 100644
--- a/stubs/Pillow/PIL/FitsStubImagePlugin.pyi
+++ b/stubs/Pillow/PIL/FitsStubImagePlugin.pyi
@@ -1,7 +1,10 @@
+from typing import ClassVar
+from typing_extensions import Literal
+
 from .ImageFile import StubImageFile
 
 def register_handler(handler) -> None: ...
 
 class FITSStubImageFile(StubImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["FITS"]]
+    format_description: ClassVar[str]
diff --git a/stubs/Pillow/PIL/FliImagePlugin.pyi b/stubs/Pillow/PIL/FliImagePlugin.pyi
index 11f57d49d..9859378fb 100644
--- a/stubs/Pillow/PIL/FliImagePlugin.pyi
+++ b/stubs/Pillow/PIL/FliImagePlugin.pyi
@@ -1,7 +1,10 @@
+from typing import ClassVar
+from typing_extensions import Literal
+
 from .ImageFile import ImageFile
 
 class FliImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["FLI"]]
+    format_description: ClassVar[str]
     def seek(self, frame) -> None: ...
     def tell(self): ...
diff --git a/stubs/Pillow/PIL/FpxImagePlugin.pyi b/stubs/Pillow/PIL/FpxImagePlugin.pyi
index 0f88b6639..069cb6b20 100644
--- a/stubs/Pillow/PIL/FpxImagePlugin.pyi
+++ b/stubs/Pillow/PIL/FpxImagePlugin.pyi
@@ -1,11 +1,12 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
 MODES: Any
 
 class FpxImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["FPX"]]
+    format_description: ClassVar[str]
     fp: Any
     def load(self): ...
diff --git a/stubs/Pillow/PIL/FtexImagePlugin.pyi b/stubs/Pillow/PIL/FtexImagePlugin.pyi
index b123ffe2c..3205880ef 100644
--- a/stubs/Pillow/PIL/FtexImagePlugin.pyi
+++ b/stubs/Pillow/PIL/FtexImagePlugin.pyi
@@ -1,3 +1,6 @@
+from typing import ClassVar
+from typing_extensions import Literal
+
 from .ImageFile import ImageFile
 
 MAGIC: bytes
@@ -5,6 +8,6 @@ FORMAT_DXT1: int
 FORMAT_UNCOMPRESSED: int
 
 class FtexImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["FTEX"]]
+    format_description: ClassVar[str]
     def load_seek(self, pos) -> None: ...
diff --git a/stubs/Pillow/PIL/GbrImagePlugin.pyi b/stubs/Pillow/PIL/GbrImagePlugin.pyi
index 070d87d68..b5ede10c8 100644
--- a/stubs/Pillow/PIL/GbrImagePlugin.pyi
+++ b/stubs/Pillow/PIL/GbrImagePlugin.pyi
@@ -1,9 +1,10 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
 class GbrImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["GBR"]]
+    format_description: ClassVar[str]
     im: Any
     def load(self) -> None: ...
diff --git a/stubs/Pillow/PIL/GdImageFile.pyi b/stubs/Pillow/PIL/GdImageFile.pyi
index 185d27b5d..a50f3f3c3 100644
--- a/stubs/Pillow/PIL/GdImageFile.pyi
+++ b/stubs/Pillow/PIL/GdImageFile.pyi
@@ -1,7 +1,10 @@
+from typing import ClassVar
+from typing_extensions import Literal
+
 from .ImageFile import ImageFile
 
 class GdImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["GD"]]
+    format_description: ClassVar[str]
 
 def open(fp, mode: str = ...): ...
diff --git a/stubs/Pillow/PIL/GifImagePlugin.pyi b/stubs/Pillow/PIL/GifImagePlugin.pyi
index 47827071f..ff064cc50 100644
--- a/stubs/Pillow/PIL/GifImagePlugin.pyi
+++ b/stubs/Pillow/PIL/GifImagePlugin.pyi
@@ -1,10 +1,11 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
 class GifImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["GIF"]]
+    format_description: ClassVar[str]
     global_palette: Any
     def data(self): ...
     @property
diff --git a/stubs/Pillow/PIL/GribStubImagePlugin.pyi b/stubs/Pillow/PIL/GribStubImagePlugin.pyi
index 34c773a25..70ebaadc0 100644
--- a/stubs/Pillow/PIL/GribStubImagePlugin.pyi
+++ b/stubs/Pillow/PIL/GribStubImagePlugin.pyi
@@ -1,7 +1,10 @@
+from typing import ClassVar
+from typing_extensions import Literal
+
 from .ImageFile import StubImageFile
 
 def register_handler(handler) -> None: ...
 
 class GribStubImageFile(StubImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["GRIB"]]
+    format_description: ClassVar[str]
diff --git a/stubs/Pillow/PIL/Hdf5StubImagePlugin.pyi b/stubs/Pillow/PIL/Hdf5StubImagePlugin.pyi
index b036a17ab..62760e41c 100644
--- a/stubs/Pillow/PIL/Hdf5StubImagePlugin.pyi
+++ b/stubs/Pillow/PIL/Hdf5StubImagePlugin.pyi
@@ -1,7 +1,10 @@
+from typing import ClassVar
+from typing_extensions import Literal
+
 from .ImageFile import StubImageFile
 
 def register_handler(handler) -> None: ...
 
 class HDF5StubImageFile(StubImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["HDF5"]]
+    format_description: ClassVar[str]
diff --git a/stubs/Pillow/PIL/IcnsImagePlugin.pyi b/stubs/Pillow/PIL/IcnsImagePlugin.pyi
index 8606fcf13..42714148c 100644
--- a/stubs/Pillow/PIL/IcnsImagePlugin.pyi
+++ b/stubs/Pillow/PIL/IcnsImagePlugin.pyi
@@ -1,4 +1,5 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
@@ -22,8 +23,8 @@ class IcnsFile:
     def getimage(self, size: Any | None = ...): ...
 
 class IcnsImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["ICNS"]]
+    format_description: ClassVar[str]
     @property
     def size(self): ...
     @size.setter
diff --git a/stubs/Pillow/PIL/IcoImagePlugin.pyi b/stubs/Pillow/PIL/IcoImagePlugin.pyi
index 536de0ade..f84ed76d5 100644
--- a/stubs/Pillow/PIL/IcoImagePlugin.pyi
+++ b/stubs/Pillow/PIL/IcoImagePlugin.pyi
@@ -1,4 +1,5 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
@@ -13,8 +14,8 @@ class IcoFile:
     def frame(self, idx): ...
 
 class IcoImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["ICO"]]
+    format_description: ClassVar[str]
     @property
     def size(self): ...
     @size.setter
diff --git a/stubs/Pillow/PIL/ImImagePlugin.pyi b/stubs/Pillow/PIL/ImImagePlugin.pyi
index b6c3d84b6..09fd68419 100644
--- a/stubs/Pillow/PIL/ImImagePlugin.pyi
+++ b/stubs/Pillow/PIL/ImImagePlugin.pyi
@@ -1,4 +1,5 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
@@ -18,8 +19,8 @@ split: Any
 def number(s): ...
 
 class ImImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["IM"]]
+    format_description: ClassVar[str]
     @property
     def n_frames(self): ...
     @property
diff --git a/stubs/Pillow/PIL/Image.pyi b/stubs/Pillow/PIL/Image.pyi
index ca3fb6ff0..6367237fd 100644
--- a/stubs/Pillow/PIL/Image.pyi
+++ b/stubs/Pillow/PIL/Image.pyi
@@ -1,7 +1,7 @@
 from _typeshed import SupportsRead, SupportsWrite
 from collections.abc import Iterable, Iterator, MutableMapping
 from pathlib import Path
-from typing import Any, Callable, Protocol, Sequence, SupportsBytes, Union
+from typing import Any, Callable, ClassVar, Protocol, Sequence, SupportsBytes, Union
 from typing_extensions import Literal
 
 from ._imaging import (
@@ -102,8 +102,8 @@ class _E:
 _ImageState = tuple[dict[str, Any], str, tuple[int, int], Any, bytes]
 
 class Image:
-    format: Any
-    format_description: Any
+    format: ClassVar[str | None]
+    format_description: ClassVar[str | None]
     im: Any
     mode: str
     palette: Any
@@ -196,7 +196,7 @@ class Image:
         **params: Any,
     ) -> None: ...
     def seek(self, frame: int) -> None: ...
-    def show(self, title: str | None = ..., command: str | None = ...) -> None: ...
+    def show(self, title: str | None = ...) -> None: ...
     def split(self) -> tuple[Image, ...]: ...
     def getchannel(self, channel: int | str) -> Image: ...
     def tell(self) -> int: ...
diff --git a/stubs/Pillow/PIL/ImageDraw.pyi b/stubs/Pillow/PIL/ImageDraw.pyi
index 15c71b99a..a5424aa82 100644
--- a/stubs/Pillow/PIL/ImageDraw.pyi
+++ b/stubs/Pillow/PIL/ImageDraw.pyi
@@ -30,7 +30,7 @@ class ImageDraw:
         width: float = ...,
     ) -> None: ...
     def point(self, xy: _XY, fill: _Ink | None = ...) -> None: ...
-    def polygon(self, xy: _XY, fill: _Ink | None = ..., outline: _Ink | None = ...) -> None: ...
+    def polygon(self, xy: _XY, fill: _Ink | None = ..., outline: _Ink | None = ..., width: float = ...) -> None: ...
     def regular_polygon(
         self,
         bounding_circle: tuple[float, float] | tuple[float, float, float] | list[int],
diff --git a/stubs/Pillow/PIL/ImageFile.pyi b/stubs/Pillow/PIL/ImageFile.pyi
index 745509b49..21bfde2e1 100644
--- a/stubs/Pillow/PIL/ImageFile.pyi
+++ b/stubs/Pillow/PIL/ImageFile.pyi
@@ -10,7 +10,6 @@ LOAD_TRUNCATED_IMAGES: bool
 ERRORS: Any
 
 def raise_oserror(error) -> NoReturn: ...
-def raise_ioerror(error) -> NoReturn: ...
 
 class ImageFile(Image):
     custom_mimetype: Any
diff --git a/stubs/Pillow/PIL/ImageShow.pyi b/stubs/Pillow/PIL/ImageShow.pyi
index 27daf3fb4..917de83d7 100644
--- a/stubs/Pillow/PIL/ImageShow.pyi
+++ b/stubs/Pillow/PIL/ImageShow.pyi
@@ -1,4 +1,5 @@
 from typing import Any
+from typing_extensions import Literal
 
 def register(viewer, order: int = ...) -> None: ...
 def show(image, title: Any | None = ..., **options): ...
@@ -30,8 +31,11 @@ class UnixViewer(Viewer):
     def get_command(self, file, **options): ...
     def show_file(self, file, **options): ...
 
+class XDGViewer(UnixViewer):
+    def get_command_ex(self, file, **options) -> tuple[Literal["xdg-open"], Literal["xdg-open"]]: ...
+
 class DisplayViewer(UnixViewer):
-    def get_command_ex(self, file, **options): ...
+    def get_command_ex(self, file, title: str | None = ..., **options): ...
 
 class GmDisplayViewer(UnixViewer):
     def get_command_ex(self, file, **options): ...
diff --git a/stubs/Pillow/PIL/ImtImagePlugin.pyi b/stubs/Pillow/PIL/ImtImagePlugin.pyi
index 567cbe42e..eadbef84f 100644
--- a/stubs/Pillow/PIL/ImtImagePlugin.pyi
+++ b/stubs/Pillow/PIL/ImtImagePlugin.pyi
@@ -1,9 +1,10 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
 field: Any
 
 class ImtImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["IMT"]]
+    format_description: ClassVar[str]
diff --git a/stubs/Pillow/PIL/IptcImagePlugin.pyi b/stubs/Pillow/PIL/IptcImagePlugin.pyi
index dac96b3b5..738caa991 100644
--- a/stubs/Pillow/PIL/IptcImagePlugin.pyi
+++ b/stubs/Pillow/PIL/IptcImagePlugin.pyi
@@ -1,4 +1,5 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
@@ -9,8 +10,8 @@ def i(c): ...
 def dump(c) -> None: ...
 
 class IptcImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["IPTC"]]
+    format_description: ClassVar[str]
     def getint(self, key): ...
     def field(self): ...
     im: Any
diff --git a/stubs/Pillow/PIL/Jpeg2KImagePlugin.pyi b/stubs/Pillow/PIL/Jpeg2KImagePlugin.pyi
index 729078134..a37d618f9 100644
--- a/stubs/Pillow/PIL/Jpeg2KImagePlugin.pyi
+++ b/stubs/Pillow/PIL/Jpeg2KImagePlugin.pyi
@@ -1,10 +1,11 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
 class Jpeg2KImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["JPEG2000"]]
+    format_description: ClassVar[str]
     reduce: Any
     tile: Any
     def load(self): ...
diff --git a/stubs/Pillow/PIL/JpegImagePlugin.pyi b/stubs/Pillow/PIL/JpegImagePlugin.pyi
index 094110692..3e2fefd0a 100644
--- a/stubs/Pillow/PIL/JpegImagePlugin.pyi
+++ b/stubs/Pillow/PIL/JpegImagePlugin.pyi
@@ -1,4 +1,5 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
@@ -11,8 +12,8 @@ def DQT(self, marker) -> None: ...
 MARKER: Any
 
 class JpegImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["JPEG", "MPO"]]
+    format_description: ClassVar[str]
     def load_read(self, read_bytes): ...
     mode: Any
     tile: Any
diff --git a/stubs/Pillow/PIL/McIdasImagePlugin.pyi b/stubs/Pillow/PIL/McIdasImagePlugin.pyi
index c492fe2ac..6e7be9913 100644
--- a/stubs/Pillow/PIL/McIdasImagePlugin.pyi
+++ b/stubs/Pillow/PIL/McIdasImagePlugin.pyi
@@ -1,5 +1,8 @@
+from typing import ClassVar
+from typing_extensions import Literal
+
 from .ImageFile import ImageFile
 
 class McIdasImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["MCIDAS"]]
+    format_description: ClassVar[str]
diff --git a/stubs/Pillow/PIL/MicImagePlugin.pyi b/stubs/Pillow/PIL/MicImagePlugin.pyi
index 48fe3c750..b4fdc9d05 100644
--- a/stubs/Pillow/PIL/MicImagePlugin.pyi
+++ b/stubs/Pillow/PIL/MicImagePlugin.pyi
@@ -1,10 +1,10 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .TiffImagePlugin import TiffImageFile
 
 class MicImageFile(TiffImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["MIC"]]
     fp: Any
     frame: Any
     def seek(self, frame) -> None: ...
diff --git a/stubs/Pillow/PIL/MpegImagePlugin.pyi b/stubs/Pillow/PIL/MpegImagePlugin.pyi
index 4cadacb07..0f01f2b7b 100644
--- a/stubs/Pillow/PIL/MpegImagePlugin.pyi
+++ b/stubs/Pillow/PIL/MpegImagePlugin.pyi
@@ -1,4 +1,5 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
@@ -13,5 +14,5 @@ class BitStream:
     def read(self, bits): ...
 
 class MpegImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["MPEG"]]
+    format_description: ClassVar[str]
diff --git a/stubs/Pillow/PIL/MpoImagePlugin.pyi b/stubs/Pillow/PIL/MpoImagePlugin.pyi
index b89dfa2e7..2096c466c 100644
--- a/stubs/Pillow/PIL/MpoImagePlugin.pyi
+++ b/stubs/Pillow/PIL/MpoImagePlugin.pyi
@@ -1,10 +1,10 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .JpegImagePlugin import JpegImageFile
 
 class MpoImageFile(JpegImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["MPO"]]
     def load_seek(self, pos) -> None: ...
     fp: Any
     offset: Any
diff --git a/stubs/Pillow/PIL/MspImagePlugin.pyi b/stubs/Pillow/PIL/MspImagePlugin.pyi
index 2f34b0559..bc3f25db4 100644
--- a/stubs/Pillow/PIL/MspImagePlugin.pyi
+++ b/stubs/Pillow/PIL/MspImagePlugin.pyi
@@ -1,8 +1,11 @@
+from typing import ClassVar
+from typing_extensions import Literal
+
 from .ImageFile import ImageFile, PyDecoder
 
 class MspImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["MSP"]]
+    format_description: ClassVar[str]
 
 class MspDecoder(PyDecoder):
     def decode(self, buffer): ...
diff --git a/stubs/Pillow/PIL/PcdImagePlugin.pyi b/stubs/Pillow/PIL/PcdImagePlugin.pyi
index 0c147ca5e..a5ea3dd00 100644
--- a/stubs/Pillow/PIL/PcdImagePlugin.pyi
+++ b/stubs/Pillow/PIL/PcdImagePlugin.pyi
@@ -1,9 +1,10 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
 class PcdImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["PCD"]]
+    format_description: ClassVar[str]
     im: Any
     def load_end(self) -> None: ...
diff --git a/stubs/Pillow/PIL/PcxImagePlugin.pyi b/stubs/Pillow/PIL/PcxImagePlugin.pyi
index 8a47f72a8..b8916662a 100644
--- a/stubs/Pillow/PIL/PcxImagePlugin.pyi
+++ b/stubs/Pillow/PIL/PcxImagePlugin.pyi
@@ -1,11 +1,12 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
 logger: Any
 
 class PcxImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["PCX", "DCX"]]
+    format_description: ClassVar[str]
 
 SAVE: Any
diff --git a/stubs/Pillow/PIL/PixarImagePlugin.pyi b/stubs/Pillow/PIL/PixarImagePlugin.pyi
index 31890c45d..8c9bcaf2f 100644
--- a/stubs/Pillow/PIL/PixarImagePlugin.pyi
+++ b/stubs/Pillow/PIL/PixarImagePlugin.pyi
@@ -1,5 +1,8 @@
+from typing import ClassVar
+from typing_extensions import Literal
+
 from .ImageFile import ImageFile
 
 class PixarImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["PIXAR"]]
+    format_description: ClassVar[str]
diff --git a/stubs/Pillow/PIL/PngImagePlugin.pyi b/stubs/Pillow/PIL/PngImagePlugin.pyi
index 3126f6b23..b2033e678 100644
--- a/stubs/Pillow/PIL/PngImagePlugin.pyi
+++ b/stubs/Pillow/PIL/PngImagePlugin.pyi
@@ -1,4 +1,5 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from ._binary import o8 as o8
 from .ImageFile import ImageFile
@@ -75,8 +76,8 @@ class PngStream(ChunkStream):
     def chunk_fdAT(self, pos, length): ...
 
 class PngImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["PNG"]]
+    format_description: ClassVar[str]
     @property
     def text(self): ...
     fp: Any
diff --git a/stubs/Pillow/PIL/PpmImagePlugin.pyi b/stubs/Pillow/PIL/PpmImagePlugin.pyi
index 2adee46f2..797bbd79b 100644
--- a/stubs/Pillow/PIL/PpmImagePlugin.pyi
+++ b/stubs/Pillow/PIL/PpmImagePlugin.pyi
@@ -1,4 +1,5 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
@@ -6,5 +7,5 @@ b_whitespace: bytes
 MODES: Any
 
 class PpmImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["PPM"]]
+    format_description: ClassVar[str]
diff --git a/stubs/Pillow/PIL/PsdImagePlugin.pyi b/stubs/Pillow/PIL/PsdImagePlugin.pyi
index 5a3d381fe..0d3835011 100644
--- a/stubs/Pillow/PIL/PsdImagePlugin.pyi
+++ b/stubs/Pillow/PIL/PsdImagePlugin.pyi
@@ -1,12 +1,13 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
 MODES: Any
 
 class PsdImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["PSD"]]
+    format_description: ClassVar[str]
     mode: Any
     tile: Any
     frame: Any
diff --git a/stubs/Pillow/PIL/SgiImagePlugin.pyi b/stubs/Pillow/PIL/SgiImagePlugin.pyi
index 2d498dbd2..e7f4ff96e 100644
--- a/stubs/Pillow/PIL/SgiImagePlugin.pyi
+++ b/stubs/Pillow/PIL/SgiImagePlugin.pyi
@@ -1,12 +1,13 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile, PyDecoder
 
 MODES: Any
 
 class SgiImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["SGI"]]
+    format_description: ClassVar[str]
 
 class SGI16Decoder(PyDecoder):
     def decode(self, buffer): ...
diff --git a/stubs/Pillow/PIL/SpiderImagePlugin.pyi b/stubs/Pillow/PIL/SpiderImagePlugin.pyi
index 8a3e213c0..17f5e6d3a 100644
--- a/stubs/Pillow/PIL/SpiderImagePlugin.pyi
+++ b/stubs/Pillow/PIL/SpiderImagePlugin.pyi
@@ -1,4 +1,4 @@
-from typing import Any
+from typing import Any, ClassVar
 from typing_extensions import Literal
 
 from .ImageFile import ImageFile
@@ -11,8 +11,8 @@ def isSpiderHeader(t): ...
 def isSpiderImage(filename): ...
 
 class SpiderImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["SPIDER"]]
+    format_description: ClassVar[str]
     @property
     def n_frames(self): ...
     @property
diff --git a/stubs/Pillow/PIL/SunImagePlugin.pyi b/stubs/Pillow/PIL/SunImagePlugin.pyi
index 731c78846..27ac28a58 100644
--- a/stubs/Pillow/PIL/SunImagePlugin.pyi
+++ b/stubs/Pillow/PIL/SunImagePlugin.pyi
@@ -1,5 +1,8 @@
+from typing import ClassVar
+from typing_extensions import Literal
+
 from .ImageFile import ImageFile
 
 class SunImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["SUN"]]
+    format_description: ClassVar[str]
diff --git a/stubs/Pillow/PIL/TgaImagePlugin.pyi b/stubs/Pillow/PIL/TgaImagePlugin.pyi
index 3072da301..5022107b6 100644
--- a/stubs/Pillow/PIL/TgaImagePlugin.pyi
+++ b/stubs/Pillow/PIL/TgaImagePlugin.pyi
@@ -1,11 +1,12 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
 MODES: Any
 
 class TgaImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["TGA"]]
+    format_description: ClassVar[str]
 
 SAVE: Any
diff --git a/stubs/Pillow/PIL/TiffImagePlugin.pyi b/stubs/Pillow/PIL/TiffImagePlugin.pyi
index 5eaaa7b6f..7fb5cb47f 100644
--- a/stubs/Pillow/PIL/TiffImagePlugin.pyi
+++ b/stubs/Pillow/PIL/TiffImagePlugin.pyi
@@ -1,6 +1,7 @@
 from collections.abc import MutableMapping
 from numbers import Rational
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
@@ -136,8 +137,8 @@ class ImageFileDirectory_v1(ImageFileDirectory_v2):
 ImageFileDirectory = ImageFileDirectory_v1
 
 class TiffImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["TIFF", "MIC"]]
+    format_description: ClassVar[str]
     tag_v2: Any
     tag: Any
     def __init__(self, fp: Any | None = ..., filename: Any | None = ...) -> None: ...
diff --git a/stubs/Pillow/PIL/WalImageFile.pyi b/stubs/Pillow/PIL/WalImageFile.pyi
index 6355032c8..24d1cb5cc 100644
--- a/stubs/Pillow/PIL/WalImageFile.pyi
+++ b/stubs/Pillow/PIL/WalImageFile.pyi
@@ -1,3 +1,13 @@
+from typing import ClassVar
+from typing_extensions import Literal
+
+from . import ImageFile
+
+class WalImageFile(ImageFile.ImageFile):
+    format: ClassVar[Literal["WAL"]]
+    format_description: ClassVar[str]
+    def load(self) -> None: ...
+
 def open(filename): ...
 
 quake2palette: bytes
diff --git a/stubs/Pillow/PIL/WebPImagePlugin.pyi b/stubs/Pillow/PIL/WebPImagePlugin.pyi
index 97614e6d0..f7b7e6c5d 100644
--- a/stubs/Pillow/PIL/WebPImagePlugin.pyi
+++ b/stubs/Pillow/PIL/WebPImagePlugin.pyi
@@ -1,12 +1,13 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
 SUPPORTED: bool
 
 class WebPImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["WEBP"]]
+    format_description: ClassVar[str]
     def seek(self, frame) -> None: ...
     fp: Any
     tile: Any
diff --git a/stubs/Pillow/PIL/WmfImagePlugin.pyi b/stubs/Pillow/PIL/WmfImagePlugin.pyi
index b7244948f..5f7c4d4ec 100644
--- a/stubs/Pillow/PIL/WmfImagePlugin.pyi
+++ b/stubs/Pillow/PIL/WmfImagePlugin.pyi
@@ -1,4 +1,5 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import StubImageFile
 
@@ -10,6 +11,6 @@ class WmfHandler:
     def load(self, im): ...
 
 class WmfStubImageFile(StubImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["WMF"]]
+    format_description: ClassVar[str]
     def load(self, dpi: Any | None = ...) -> None: ...
diff --git a/stubs/Pillow/PIL/XVThumbImagePlugin.pyi b/stubs/Pillow/PIL/XVThumbImagePlugin.pyi
index 3d098da18..ebfc7d98d 100644
--- a/stubs/Pillow/PIL/XVThumbImagePlugin.pyi
+++ b/stubs/Pillow/PIL/XVThumbImagePlugin.pyi
@@ -1,7 +1,10 @@
+from typing import ClassVar
+from typing_extensions import Literal
+
 from .ImageFile import ImageFile
 
 PALETTE: bytes
 
 class XVThumbImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["XVThumb"]]
+    format_description: ClassVar[str]
diff --git a/stubs/Pillow/PIL/XbmImagePlugin.pyi b/stubs/Pillow/PIL/XbmImagePlugin.pyi
index f8305c04a..588aaac2d 100644
--- a/stubs/Pillow/PIL/XbmImagePlugin.pyi
+++ b/stubs/Pillow/PIL/XbmImagePlugin.pyi
@@ -1,9 +1,10 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
 xbm_head: Any
 
 class XbmImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["XBM"]]
+    format_description: ClassVar[str]
diff --git a/stubs/Pillow/PIL/XpmImagePlugin.pyi b/stubs/Pillow/PIL/XpmImagePlugin.pyi
index 600a9e0cd..d0df39a6e 100644
--- a/stubs/Pillow/PIL/XpmImagePlugin.pyi
+++ b/stubs/Pillow/PIL/XpmImagePlugin.pyi
@@ -1,10 +1,11 @@
-from typing import Any
+from typing import Any, ClassVar
+from typing_extensions import Literal
 
 from .ImageFile import ImageFile
 
 xpm_head: Any
 
 class XpmImageFile(ImageFile):
-    format: str
-    format_description: str
+    format: ClassVar[Literal["XPM"]]
+    format_description: ClassVar[str]
     def load_read(self, bytes): ...