Files
Is browser screen recording safe and private?
The honest answer is that it depends entirely on the page, and that you can check rather than trust.
What the browser guarantees
A page cannot start screen capture without a direct click from you, cannot choose what is shared, and cannot see anything until you pick it in the browser’s own picker. While sharing, the browser shows a persistent indicator you can stop at any time. None of this depends on the page behaving well.
What the browser does not guarantee
Once you have granted access, the page has your screen content. Whether it then uploads that content is entirely up to the page. This is where recorders differ.
How to check for yourself
Keep the Network panel open while you capture and watch what leaves. A recorder that transmits your footage cannot hide a file that size. Better still, read the privacy page and disconnect once the page has finished loading — anything that still records, previews and saves was never reliant on a server.
What this recorder does
Everything stays in the tab. There is no upload endpoint in the code, and the server response headers restrict the page to connecting only to its own origin — so the browser itself would block an upload attempt.
Read next
- How to record your screen without installing anything
Why browser-based recording needs no installation, and what you give up compared with a desktop app.
- WebM or MP4: which you get and why
The difference between the two formats browsers produce, and which one you want.
- How to convert a WebM recording to MP4
Three ways to convert a screen recording to MP4, including one that does not re-encode.