Removed specific WebP feature checks

Tests/test_features.py

@@ -55,21 +55,6 @@ def test_version() -> None:
             test(feature, features.version_feature)
 
 
-def test_webp_transparency() -> None:
-    with pytest.warns(DeprecationWarning, match="transp_webp"):
-        assert (features.check("transp_webp") or False) == features.check_module("webp")
-
-
-def test_webp_mux() -> None:
-    with pytest.warns(DeprecationWarning, match="webp_mux"):
-        assert (features.check("webp_mux") or False) == features.check_module("webp")
-
-
-def test_webp_anim() -> None:
-    with pytest.warns(DeprecationWarning, match="webp_anim"):
-        assert (features.check("webp_anim") or False) == features.check_module("webp")
-
-
 @skip_unless_feature("libjpeg_turbo")
 def test_libjpeg_turbo_version() -> None:
     version = features.version("libjpeg_turbo")

checks/check_wheel.py

@@ -39,9 +39,6 @@ def test_wheel_codecs() -> None:
 
 def test_wheel_features() -> None:
     expected_features = {
-        "webp_anim",
-        "webp_mux",
-        "transp_webp",
         "raqm",
         "fribidi",
         "harfbuzz",

docs/deprecations.rst

@@ -122,16 +122,6 @@ The ``options`` parameter in :py:meth:`~PIL.ImageMath.lambda_eval()` and
 :py:meth:`~PIL.ImageMath.unsafe_eval()` has been deprecated. One or more keyword
 arguments can be used instead.
 
-Specific WebP feature checks
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-.. deprecated:: 11.0.0
-
-``features.check("transp_webp")``, ``features.check("webp_mux")`` and
-``features.check("webp_anim")`` are now deprecated. They will always return
-``True`` if the WebP module is installed, until they are removed in Pillow
-12.0.0 (2025-10-15).
-
 Get internal pointers to objects
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
@@ -222,14 +212,23 @@ JpegImageFile.huffman_ac and JpegImageFile.huffman_dc
 .. versionremoved:: 12.0.0
 
 The ``huffman_ac`` and ``huffman_dc`` dictionaries on JPEG images were unused. They
-have been deprecated, and will be removed in Pillow 12 (2025-10-15).
+have been removed.
+
+Specific WebP feature checks
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 11.0.0
+.. versionremoved:: 12.0.0
+
+``features.check("transp_webp")``, ``features.check("webp_mux")`` and
+``features.check("webp_anim")`` have been removed.
 
 TiffImagePlugin IFD_LEGACY_API
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 .. versionremoved:: 11.0.0
 
-``TiffImagePlugin.IFD_LEGACY_API`` was removed, as it was an unused setting.
+``TiffImagePlugin.IFD_LEGACY_API`` has been removed, as it was an unused setting.
 
 PSFile
 ~~~~~~

docs/reference/features.rst

@@ -60,9 +60,6 @@ Support for the following features can be checked:
 * ``raqm``: Raqm library, required for ``ImageFont.Layout.RAQM`` in :py:func:`PIL.ImageFont.truetype`. Run-time version number is available for Raqm 0.7.0 or newer.
 * ``libimagequant``: (compile time) ImageQuant quantization support in :py:func:`PIL.Image.Image.quantize`. Run-time version number is available.
 * ``xcb``: (compile time) Support for X11 in :py:func:`PIL.ImageGrab.grab` via the XCB library.
-* ``transp_webp``: Deprecated. Always ``True`` if WebP module is installed.
-* ``webp_mux``: Deprecated. Always ``True`` if WebP module is installed.
-* ``webp_anim``: Deprecated. Always ``True`` if WebP module is installed.
 
 .. autofunction:: PIL.features.check_feature
 .. autofunction:: PIL.features.version_feature

src/PIL/features.py

@@ -121,9 +121,6 @@ def get_supported_codecs() -> list[str]:
 
 
 features: dict[str, tuple[str, str | bool, str | None]] = {
-    "webp_anim": ("PIL._webp", True, None),
-    "webp_mux": ("PIL._webp", True, None),
-    "transp_webp": ("PIL._webp", True, None),
     "raqm": ("PIL._imagingft", "HAVE_RAQM", "raqm_version"),
     "fribidi": ("PIL._imagingft", "HAVE_FRIBIDI", "fribidi_version"),
     "harfbuzz": ("PIL._imagingft", "HAVE_HARFBUZZ", "harfbuzz_version"),