OT? want to save web page image automatically

[Colin Law]

On Tue, 10 Nov 2020 at 00:42, Dave Stevens <geek at uniserve.com> wrote:
>
> I have a web page that displays a chart of values that change once per
> hour. It it uses chart.js under node.js on mint.
>
> See it here: http://209.145.101.163/24chart.html
>
> If I right click on the image I have an option (in Firefox) to save it
> as a png. That works fine. What I'd like to do is save the image once
> per hour without intervention. Does anyone know a scriptable method?

Rather than do it like that you would get a much more flexible system
using node-red in conjunction with influxdb to store the data and
grafana to show it.  Then you would be able to easily review
historical data, zoom in, etc.

Health Warning:  node-red is highly addictive and may well have a
detrimental effect on your personal relationships.  There is an
excellent help group for those suffering from this at
https://discourse.nodered.org, though the chances of long term
recovery are slim.

Colin