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Security prompts on macOS and Windows — exactly what to click.

Drag SVD into your Applications folder.

Open SVD from Applications. It's Apple-notarized — if macOS asks, click Open.

Copy a video address and SVD picks it up.

Open the .msi and click Next through the setup.

If Windows asks for permission, click Yes.

Click Finish, then open SVD from the Start menu.
Detects video on the page you're on and sends it to SVD in one click. It's distributed from this site, not the Chrome Web Store.
Download extensionThe guides walk through every step.