Bilibili Video Downloader

Bilibili Video Downloader is a focused Chrome and Edge extension. Open a Bilibili China or BiliBili International video page and click the extension to see its cover and qualities authorized for the current account. Every download opens a Save As window where the user chooses the filename and location, including Desktop. The task then continues in the extension background without entering the browser download list or opening a separate download page. China-site Bilibili and b23.tv links can also be pasted directly in the popup. - Recognizes the current video page and reads only qualities already loaded and authorized by its player for the current account - Supports BV, av, b23.tv, and bilibili.tv International episode links - Reviews the title, creator, duration, cover, and account-authorized qualities in the popup; restricted International 720P/1080P options show a Premium lock - Shows full video, silent video, and audio-only choices only when the selected quality has confirmed separate video and audio tracks; otherwise defaults to full video without showing track-only choices - After selecting a quality, save the full video (MP4), a silent video track (MP4), or an audio track (M4A) when the current player provides separate tracks; track-only choices stay local and never fall back to a full-video job - Streams directly savable single files to the destination selected for that download, without using the browser download manager or merge service - Uses the same disk-backed path for separate video and audio of all sizes: download in chunks to private browser file storage, then losslessly remux from disk into the MP4 output - Sets no fixed local file-size cap; local processing depends on available browser storage - Full-video mode attempts chunked upload and server remuxing when local processing is unavailable; track-only modes neither upload media to the server nor change into a full-video download - Keeps both local and fallback server jobs in the extension background, then writes the result to the selected file without opening another page - Does not access the browser's history or read or upload cookies, account credentials, or passwords; it handles the current video page URL after a user click and sends that URL only if server fallback creates a task - After a user starts a download, asynchronously reports anonymous operational metrics only: a one-time random task ID, extension version, site class, event time, result, selected content type, processing path and stage, resolution, media duration, exact source-track and final-output byte counts when available, exact elapsed time, and restricted error/fallback codes; never the title, page URL, BV/av ID, creator, filename, or local path - Never bypasses login, membership, region, or DRM restrictions and never submits a quality the current account cannot view Only save content you own, are authorized to use, or are otherwise legally allowed to retain. Anonymous daily active usage After a user starts a download, the extension asynchronously sends only a daily random anonymous identifier, the tool type, and the Beijing calendar date to https://m3u8.x-tool.online/api/usage/active. This counts active browser installations, rather than identified people. Opening the popup does not count as use. The identifier is never reused across days; no video, page URL, title, account, cookie, filename, or local path is included. Successful reports are sent at most once per day; a failed report can be retried on the next actual use. Reporting never blocks the download. Records are automatically deleted after no more than 365 days and are not used for advertising or profiling. Privacy policy: https://x-tool.online/privacy?lang=en