Where to get flags for free
- https://www.free-country-flags.com/index.php
- https://www.iconfinder.com/flag-icons?price=free
- https://www.flaticon.com/free-icons/flag_469
- http://www.sciencekids.co.nz/pictures/flags.html
Hint: sometimes you can download all flags from the page, for example from here https://www.iconfinder.com/iconsets/flags_gosquared by saving loaded web page! Load the page in the browser -> press CTRL+S (win) -> find folder with saved elements of the web page and take flags images from there.