Chatbot Ollama is an open-source chat UI built on top of the Ollama runtime, enabling users to interact with local LLMs through a web browser. It supports document uploads (PDF, TXT, MD) with server-side parsing, image attachments for vision-capable models via base64 encoding, streaming responses with stop-generation control, and conversation management features including search and export. The interface includes code block rendering with copy functionality and keyboard shortcuts for efficient use.