ChatLean

Keep long ChatGPT, Claude, Gemini, Perplexity, and Poe conversations lighter by trimming older rendered messages locally.

Make long AI chats feel lighter. Long AI chat conversations can make your browser tab slow, heavy, or laggy. ChatLean helps keep supported AI chat pages responsive by trimming older rendered messages from the page while keeping your most recent conversation visible. ChatLean works locally in your browser on supported AI chat sites, including ChatGPT, Claude, Gemini, Perplexity, and Poe. Older messages are replaced with lightweight placeholders, and you can restore them when needed with the “Load older messages” button. FEATURES • Keeps long AI chat pages lighter and more responsive • Keeps recent messages visible while trimming older rendered messages • Restores older messages in batches when you need them • Offers adjustable modes: Light, Balanced, and Aggressive • Works locally in your browser • Requires no account • Does not collect, transmit, or sell chat content PRIVACY-FIRST BY DESIGN ChatLean does not send your chat content to a server. It does not require an account, collect analytics, or track your browsing history. IMPORTANT LIMITATIONS ChatLean only changes what is rendered in your browser tab. It does not delete your conversations, modify the AI provider’s server-side history, reduce token usage, or change the model’s conversation context.