Who else would like to see `captureVisibleTab` API that can capture specific piece of page only?

[Juraj M.]

Did you know Firefox captureVisibleTab API supports specifying x, y, width, height and even scale parameters?

So no need to use Canvas API anymore to crop the image!

And you can even capture content that is outside of viewport! So a full page screenshots doesn't need scrolling nor image merging.

I've filed a feature request today:
https://issues.chromium.org/issues/423658618