Notehub.ai is a user-friendly online platform that simplifies the sharing of Jupyter notebooks. Users can share notebooks with colleagues and friends by uploading or dragging and dropping .ipynb files, enabling real-time collaboration and editing. The platform also offers a Markdown-based notebook editor, making it convenient for users to record and organize notes. Notehub.ai supports file uploads up to 10MB and provides a comprehensive permission management system for precise control over notebook sharing and editing access. Notehub.ai is a powerful tool suitable for a wide range of users who work with Jupyter notebooks, including academics, data scientists, and programmers.