Hi,
not everyone uses Adobe Illustrator, there is also inkscape. But in any case, there are 2 ways to create a picture, 1 way, converting bitmap images to vector format (svg), this method is the fastest, but the files are large. Method 2, creating a drawing from scratch, this method is more laborious, files under certain conditions can be minimal. As a result, method 2 is the most suitable for program iGO. Canvas size doesn't really matter for svg.