diff --git a/common/FileSystem.cpp b/common/FileSystem.cpp
index b550b8d3b4..e1b2af6142 100644
--- a/common/FileSystem.cpp
+++ b/common/FileSystem.cpp
@@ -190,6 +190,27 @@ void Path::SanitizeFileName(std::string* str, bool strip_slashes /* = true */)
 #endif
 }
 
+bool Path::IsValidFileName(const std::string_view& str, bool allow_slashes)
+{
+	const size_t len = str.length();
+	size_t pos = 0;
+	while (pos < len)
+	{
+		char32_t ch;
+		pos += StringUtil::DecodeUTF8(str.data() + pos, pos - len, &ch);
+		if (!FileSystemCharacterIsSane(ch, !allow_slashes))
+			return false;
+	}
+
+#ifdef _WIN32
+	// Windows: Can't end filename with a period.
+	if (len > 0 && str.back() == '.')
+		return false;
+#endif
+
+	return true;
+}
+
 bool Path::IsAbsolute(const std::string_view& path)
 {
 #ifdef _WIN32
diff --git a/common/Path.h b/common/Path.h
index 564d0ec174..99f07992ee 100644
--- a/common/Path.h
+++ b/common/Path.h
@@ -41,6 +41,9 @@ namespace Path
 	std::string SanitizeFileName(const std::string_view& str, bool strip_slashes = true);
 	void SanitizeFileName(std::string* str, bool strip_slashes = true);
 
+	/// Returns true if the specified filename is valid on this operating system.
+	bool IsValidFileName(const std::string_view& str, bool allow_slashes = false);
+
 	/// Returns true if the specified path is an absolute path (C:\Path on Windows or /path on Unix).
 	bool IsAbsolute(const std::string_view& path);
 
diff --git a/tests/ctest/common/path_tests.cpp b/tests/ctest/common/path_tests.cpp
index 5472c1402c..ed4e0a112f 100644
--- a/tests/ctest/common/path_tests.cpp
+++ b/tests/ctest/common/path_tests.cpp
@@ -41,6 +41,29 @@ TEST(FileSystem, ToNativePath)
 #endif
 }
 
+TEST(FileSystem, IsValidFileName)
+{
+#if defined(_WIN32) || defined(__APPLE__)
+	ASSERT_FALSE(Path::IsValidFileName("foo:bar", false));
+	ASSERT_FALSE(Path::IsValidFileName("baz\\foo:bar", false));
+	ASSERT_FALSE(Path::IsValidFileName("baz/foo:bar", false));
+	ASSERT_FALSE(Path::IsValidFileName("baz\\foo:bar", true));
+	ASSERT_FALSE(Path::IsValidFileName("baz/foo:bar", true));
+#endif
+#ifdef _WIN32
+	ASSERT_TRUE(Path::IsValidFileName("baz\\foo", true));
+	ASSERT_FALSE(Path::IsValidFileName("baz\\foo", false));
+	ASSERT_FALSE(Path::IsValidFileName("foo.", true));
+	ASSERT_FALSE(Path::IsValidFileName("foo\\.", true));
+#else
+	ASSERT_FALSE(Path::IsValidFileName("foo\\*", true));
+	ASSERT_FALSE(Path::IsValidFileName("foo*", true));
+#endif
+
+	ASSERT_TRUE(Path::IsValidFileName("baz/foo", true));
+	ASSERT_FALSE(Path::IsValidFileName("baz/foo", false));
+}
+
 TEST(FileSystem, IsAbsolute)
 {
 	ASSERT_FALSE(Path::IsAbsolute(""));