KeepChatGPT is a browser userscript (Greasemonkey/Tampermonkey) plugin that modifies the ChatGPT web interface to improve session stability, data security, and overall workflow efficiency. It provides features such as auto-refresh to prevent session expiry, removal of content auditing, conversation cloning, page cleanup, and tracking interception. It operates client-side by injecting JavaScript into the ChatGPT page, requiring no server-side infrastructure.