Add image/jxl to mimetypes

Author: FooIbar

Lib/mimetypes.py

@@ -608,6 +608,7 @@ def _default_mime_types():
         '.jpeg'   : 'image/jpeg',
         '.jpm'    : 'image/jpm',
         '.jpx'    : 'image/jpx',
+        '.jxl'    : 'image/jxl',
         '.heic'   : 'image/heic',
         '.heif'   : 'image/heif',
         '.png'    : 'image/png',

Lib/test/test_mimetypes.py

@@ -270,6 +270,7 @@ def check_extensions():
                 ("image/jp2", ".jp2"),
                 ("image/jpeg", ".jpg"),
                 ("image/jpm", ".jpm"),
+                ("image/jxl", ".jxl"),
                 ("image/t38", ".t38"),
                 ("image/tiff", ".tiff"),
                 ("image/tiff-fx", ".tfx"),

Misc/NEWS.d/next/Library/2026-01-24-23-11-17.gh-issue-144212.IXqVL8.rst

@@ -0,0 +1 @@
+Mime type ``image/jxl`` is now supported by :mod:`mimetypes`.