Is there a way / script / workaround to re-scale multiple artboards including their contents (not just the canvas size)?
Ie. I have a PSB with 10-15 artboards. Each artboard is 1242 x 2208 and need to scale each one up to 1440 x 2560.
When I press ctrl+alt+i I get the Image size panel, but this shows me the whole master document size (size of all the artboards and the spaces between them combined).
I've seen many variations of this questions across many boards but haven't found a decent answer.
From iPhone 6/6S/7 PLUS size to Android's larger resolution screen.
You're probably going to have to increase the size of the entire image by the amount of difference. Luckily they're both 16:9 aspect ratios.
Hit CTRL+ALT+I and scale up by a percentage of 1.15942028985507.
This should leave you with all artboards at the right size.