The disclosure updates website tags based on detected link changes. Link metadata based on a website is collected by an auto-tagger application. Previously collected link metadata associated with the website is accessed by the auto-tagger application. Upon detecting a link change between the collected link metadata and the accessed previously collected link metadata, the auto-tagger application identifies at least one auto-tagging rule associated with the detected link change. Tags of the website are updated by the auto-tagger application based on the identified at least one auto-tagging rule. Automatically detecting link changes and updating tags in response to the detected link changes enables consistent, accurate web analytics while reducing user effort required for website tag maintenance.