ChatPruner is a free Chrome extension designed to enhance the performance of ChatGPT by automatically managing message retention. As conversations grow longer, users may experience browser slowdowns due to accumulated messages in the DOM. ChatPruner addresses this issue by pruning old messages, ensuring that the browser remains fast and responsive throughout the session. The extension offers two modes: 'Warn-first mode,' which prompts users before removing messages, and 'Auto-remove mode,' which silently cleans up in the background, catering to different user preferences.

In addition to its core functionality, ChatPruner includes features such as an undo button for restoring pruned messages and a live conversation count displayed in the extension popup. Privacy is a key focus, as the extension operates entirely within the browser without collecting or transmitting user data. Settings are stored locally and can be synchronized across devices through Chrome Sync, making it a user-friendly tool for maintaining an efficient ChatGPT experience.