Resizes customization SVGs so they're 1920px wide/high when you see them in their own page. That way you can save a bigger version.
So this takes a .svg file you're looking at in its own .svg page and resizes it to 1920px x 1920px.
That's it that's the script
If the address in your address bar doesn't end in .svg that's not what this script is for
