Streamlift is a browser extension that saves video streams to a single MP4 file, entirely on your own device. This policy explains exactly what data the extension does and does not handle.
What we do NOT collect
- We do not collect, store, or transmit your browsing history, the pages you visit, the videos you detect, or the videos you download.
- We do not run analytics, tracking, advertising, or fingerprinting of any kind.
- We do not operate a server that receives your video content. All stream sniffing, downloading, segment joining, and muxing happen locally in your browser using bundled WebAssembly (ffmpeg.wasm). Video data never leaves your machine through us.
Network requests
The extension does not send your data anywhere. It has no backend and makes no requests to any server operated by us. It only fetches the video stream and its segments directly from the site you are already on, in order to save them locally. Nothing about your activity is transmitted to us or any third party.
Permissions and why they are needed
- Host access (optional,
<all_urls>) — requested only when you click "Enable", so the extension can observe media requests on pages where you want to save a video. You may grant it for all sites or a single site. It is used purely to detect stream manifests; nothing is sent anywhere. - webRequest — to detect video manifest and segment URLs as the page loads them.
- downloads — to save the finished MP4 to your computer.
- offscreen — to run ffmpeg.wasm for joining and remuxing segments.
- storage — to remember your license status, consent, and filename preference locally.
- tabs / webNavigation — to associate detected streams with the current tab and clear them on navigation.
Data storage
License status, your consent timestamp, and your filename template are stored locally in your browser (chrome.storage.local). Detected streams and download job state are stored in session memory (chrome.storage.session) and cleared when the browser session ends.
Contact
Questions about this policy: chenleejr@gmail.com