How to redeem Nintendo e-shop gift card?

Using a browser, visit ec.nintendo.com/redeem/#/

Select Sign in and enter your Nintendo Account e-mail address and password, and then select Sign in again.

If you are already signed in, review the user name in the top-right corner to confirm you are signed in with the correct Nintendo Account

Enter your 16-digit download code and then select, Next

Re-enter your Nintendo Account password when prompted, then select Redeem to complete the process.

A confirmation e-mail will also be sent to the e-mail address registered to your Nintendo Account once this process is completed.