JRaccoon

There would need to be a way to guarantee that only the browser could do this, or at least some way to tell exactly what the source was.

I don’t think there’s a way to do that. Let’s say browsers implemented this. I could then just take a copy of Firefox source code and make my own version, which is exactly the same than normal FF except the fancy screenshot tool has been slightly modified to allow editing the page before taking the screenshot.

Yeah I get that, but why return that information in the HTTP response?

Interesting read. One thing I don’t fully get is why does Cloudflare have the airport code in the response headers anyway? I cannot think of a single reason to have it in the response.

https://github.com/jarnedemeulemeester/findroid

This is the repository? They have a ko-fi link in the repository meaning they accept donations to support the development. Have you tried contacting the lead developer of the project and asking if they would be interested in adding the feature you want if you sponsored it via a donation?

Also, if applicable, have a different person perform the restore every time and have them do it just by following the documentation. This way multiple persons have actual experience with the process if the shit ever hits the fan and this also makes sure the documentation is accurate and up-to-date.