Vidsy

Vidsy — Download videos and audio from any website Vidsy is a powerful yet simple Chrome extension that detects and downloads video and audio from nearly any webpage. Whether it's a direct MP4, an adaptive HLS stream, a DASH manifest, or a merged video+audio pair, Vidsy handles it — all locally in your browser, with no accounts, no servers, no tracking. ━━━ KEY FEATURES ━━━ • Detects HLS (.m3u8), DASH (.mpd), and direct MP4/WebM streams automatically • Multi-GB safe — streams segments through OPFS and remuxes with libav.js WebAssembly • Extract audio as MP3 from any video source with one click • Merge separate video + audio tracks into a single MP4 (for YouTube-style adaptive streams) • Parallel HTTP Range downloads for 2–4× faster speeds on direct media • Download history with retry, pause, and resume • Side panel and popup views — work the way you prefer • Filename templates with tokens: {title}, {date}, {host}, {resolution} • Dark and light theme • Automatic subtitle detection (VTT, SRT) • Respects DRM — clearly marks protected streams and refuses to download them ━━━ HOW IT WORKS ━━━ 1. Open any page with a video or audio player 2. Click the Vidsy icon — detected media appears instantly 3. Pick a resolution or format, hit Download 4. Watch progress in real time — multi-GB files just work Vidsy handles large files (tested past 5 GB) by streaming everything through OPFS (the browser's private file system), so your tab stays responsive and memory usage stays flat. ━━━ PRIVACY ━━━ • Zero data collection — no analytics, no telemetry, no accounts • Everything runs locally in your browser • No data ever leaves your device • Full source code available on GitHub ━━━ OPEN SOURCE ━━━ Vidsy is MIT-licensed open source. Contributions, bug reports, and feature requests welcome at: https://github.com/SM227465/Vidsy ━━━ LIMITATIONS ━━━ • Cannot download DRM-protected content (Netflix, Prime, Disney+, etc.) — this is by design and by law • Some sites may require sign-in cookies; Vidsy honors your active session • YouTube adaptive streams: combined 360p/480p/720p itags work via direct path; higher qualities via merged V+A