Synonyms for invalid URL

Definition of invalid URL:

An "invalid URL" refers to a Uniform Resource Locator that is incorrectly structured, malformed, or points to a resource that does not exist or cannot be accessed on the internet. It might contain syntax errors, unsupported characters, or refer to a domain that doesn't exist or a page that has been moved or deleted. When a web browser or application attempts to use an invalid URL, it typically results in an error message, such as "404 Not Found" or a connection failure. Such URLs prevent successful navigation to the intended web page or online resource, making the target unreachable. They are a common cause of broken links on websites.