US Patent 12079299 Content management system

Provided is a method for maintaining links in a content management system. The method comprises registering, at a first time, keywords associated with external content that is referenced by an external link embedded in an electronic document. The method further comprises obtaining, in response to a user accessing the electronic document, the external content at a second time that is subsequent to the first time. The external content may be obtained by scraping a resource located at the external link to identify the external content. The method further comprises performing a verification operation to determine whether the external content has changed using the obtained external content and the registered keywords.