Thanks, your first example does the trick for me! (The second could be useful as well, depending on the use case.)

$mech->get('https://www.mscha.org/knmi/summer.cgi?month=-1');
$mech->follow_link(text=>'2020');    # opens a new window

my $chrome = $mech->driver;
my @tabs = $chrome->getTargets()->get;
my ($new_tab) = grep { $_->{url} =~ m{graph} } @tabs;
$chrome->connect(tab=>$new_tab)->get;

my $png = $mech->content_as_png;

[download]

I don't have control over the site I want to eventually use this for, and it opens new tabs all over the place. So I do need to be able to do this.
It might be useful for other people to include some documentation or an example that shows tab switching.

In reply to Re^2: WWW::Mechanize::Chrome - how to deal with new windows/tabs by mscha
in thread WWW::Mechanize::Chrome - how to deal with new windows/tabs by mscha

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