Resize an image online

Watching a tutorial about underpainting, the tutor recommended an online paid-for application that can resize images. It’s called Rapid Resizer and it comes in a number of options, from $39 to $119 a year (with quarterly options) depending on what you need. The idea is that you sketch something and feed it into the application. Then you tell it what size you want – maybe five times bigger – and it converts and does it and prints onto a number of A4 sheets (or maybe there are American size paper sheets) and lay them out so you can make whatever you are making. It could be embroidery or stained glass, or anything when you need a bigger version.

I guess you could resize in Photoshop, but you still wouldn’t be able to print on four sheets so that the sheets fit together to make a whole.