This is a feature that was available in PhotoPlus so why the backward step in AP, like TrevorW I use it for club images, In my case it is prints where I want a 50px white border, 3px coloured pin-line and another 50px white border. In PP I could do that very quickly by increasing the canvas size three times by 100px, 6px and 100px respectively with the colour set to white for the first and last resizes and to a colour selected from the image for the second resize, which takes about a minute to do. I can't find a simple way to do this in AP so have to resort to reopening the image in PP. Come on Affinity, this should be simple and easy to accommodate, please
