diff --git a/script/hassfest/translations.py b/script/hassfest/translations.py
index 182001310ad..55d2fa21934 100644
--- a/script/hassfest/translations.py
+++ b/script/hassfest/translations.py
@@ -24,6 +24,11 @@ RE_REFERENCE = r"\[\%key:(.+)\%\]"
 RE_TRANSLATION_KEY = re.compile(r"^(?!.+[_-]{2})(?![_-])[a-z0-9-_]+(?<![_-])$")
 RE_COMBINED_REFERENCE = re.compile(r"(.+\[%)|(%\].+)")
 RE_PLACEHOLDER_IN_SINGLE_QUOTES = re.compile(r"'{\w+}'")
+RE_URL = re.compile(
+    r"(((ftp|ftps|scp|http|https|mqtt|mqtts|socket|socks5):\/\/|www\.)"
+    r"[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(:[0-9]{1,5})?(\/.*)?)",
+    re.IGNORECASE,
+)
 
 # Only allow translation of integration names if they contain non-brand names
 ALLOW_NAME_TRANSLATION = {
@@ -143,6 +148,11 @@ def validate_translation_value(value: Any, allow_placeholders=True) -> str:
         raise vol.Invalid("the string should not contain combined translations")
     if string_value != string_value.strip():
         raise vol.Invalid("the string should not contain leading or trailing spaces")
+    if RE_URL.search(string_value):
+        raise vol.Invalid(
+            "the string should not contain URLs, "
+            "please use description placeholders instead"
+        )
     return string_value
 
 
diff --git a/tests/hassfest/test_translations.py b/tests/hassfest/test_translations.py
index bce815decbd..87a38a1352d 100644
--- a/tests/hassfest/test_translations.py
+++ b/tests/hassfest/test_translations.py
@@ -411,3 +411,21 @@ def test_gen_strings_schema(
     validated = schema(SAMPLE_STRINGS)
 
     assert validated == SAMPLE_STRINGS
+
+
+@pytest.mark.parametrize(
+    "translation_string",
+    [
+        "An example is: https://example.com.",
+        "www.example.com",
+        "http://example.com:8080",
+        "WWW.EXAMPLE.COM",
+        "HTTPS://www.example.com",
+    ],
+)
+def test_no_placeholders_used_for_urls(translation_string: str) -> None:
+    """Test that translation strings containing URLs are rejected."""
+    schema = vol.Schema(translations.translation_value_validator)
+
+    with pytest.raises(vol.Invalid):
+        schema(translation_string)