Clone a microsd in another slightly smaller one

I clone a microsd in another slightly smaller one using gparted following these steps:

1. After get the error in the destination microsd plugged in my Linux PC, start gparted as root.
2. Unmount all the microsd partitions. We see some warning, ignore them.
3. Reduce last partition and the extended where it is.
4. After the operation is ended, run sync twice and then extract the microsd. Might be stopped warning messages.

If you haven't GNU/Linux in your PC you can use gparted-live.

Tip: if your graphic image burner tool can burn images bigger than your microsd try dd in GNU/Linux.