Bilibili Video Downloader is a free, web-based tool that enables users to download videos and audio from Bilibili in high resolution (up to 1080p and even 4K) without registration or installation. Just paste the Bilibili link standard, short, or mobile format into the site input field, choose your desired format (e.g., MP4, WebM, FLV for video or MP3 for audio, with subtitles if available), and click to download. It supports batch downloading, live-stream replay, subtitles, and works across desktop and mobile platforms, all while maintaining privacy and advert-free access.