I see mention of removal tools. Is this something that could be baked into a browser so it happens automatically during the download process? Or some other way

I see mention of removal tools. Is this something that could be baked into a browser so it happens automatically during the download process? Or some other way to make it automatic, as it's more likely to happen. As, along the same lines, could the original be "scrubbed" for storage so there's no "paper trail" of you having received it?