Keep the quality you need
Choose from the quality variants offered by a supported HLS stream. Save the version that fits your screen and storage.
YOUR VIDEOS. WITHIN REACH.
Keep the video. Make it yours to revisit.
Save supported HLS videos as MP4, right from Chrome. Pick the quality, keep the file on your computer, and find it again in your local library.
Chrome 116+ · For videos you are authorised to download
Supported stream detected
My field recording
Choose quality
Save as MP4
Processed in your browser
Your local libraryReady to revisit
- MP4 files
- Local processing
- Quality selection
- HLS MP4
A SIMPLER WAY TO KEEP VIDEO
From a page to your own collection.
Keep processing close
Downloading and MP4 processing happen in your browser. Video files are never uploaded to the RadarKeep service.
Find it again
Search and filter your local library. Open a download in your system’s video player or reveal its folder.
THREE STEPS
Play. Pick. Keep.
Open your video
Visit a page with a supported HLS video. Allow RadarKeep access to that site and start playback.
Choose your quality
Open the extension to see detected streams and select an available quality.
Save and revisit
Download the MP4 to your computer. The local library keeps a record so you can find it later.
MADE FOR YOUR OWN COLLECTION
Useful when the video matters to you.
Creators
Keep local copies of your own recordings and published work.
Learners
Revisit lectures and tutorials when the creator allows downloads.
Collectors
Organise public-domain videos and other material you have permission to keep.
Does the extension send diagnostics?
Yes. The current extension sends pseudonymous technical reports after successful or failed downloads. These include a random installation identifier, browser and extension versions, and processing or error details. Reports do not include the page address, site name, video title or filename. Diagnostics are always enabled in the current version; see the privacy policy for details.
Which videos can I download?
RadarKeep detects supported HLS streams (.m3u8), not every video on every site. Use it for your own content, public-domain material or videos you have explicit permission to download. It does not bypass DRM, paywalls or authentication.
Will I always get a single MP4?
Smaller downloads can be delivered as one MP4. Large downloads are delivered in a small number of MP4 parts to respect browser memory limits. Compatibility also depends on the stream format and access allowed by the site.
Why does RadarKeep ask for site access?
Access is optional and requested for a site when you allow it. It lets the extension detect HLS requests on that site. Without access, it cannot detect the site’s streams.
Does my video go to a server?
Video downloading and processing happen locally in your browser. Your downloaded video files are not uploaded to our service. The local library stores records of completed downloads on your device.
Can I sync my library?
The library mirror is not yet available in the extension. Your library currently stays local. The optional online mirror described in the privacy policy is a planned feature and cannot be enabled in the current extension.
RADARKEEP / CHROME
Your next video, kept close.
Start with a video you own or have permission to download.
Add RadarKeep to Chrome