We created a neat, glossy flag set “Flags of the world” in 256 x 256 px, covering all major countries and states in the world, for a prior project. We thought the images might would be appreciated in the public so here they are for free. In total, two different sets with 230 flags each. All of them are saved in PNG-24 format with semi-transparency.
The use of the free flag set in PNG is free for both personal and commercial use as long as you include a link to http://www.bannerflow.com on your website when using these flags. Example link locations are in your article as caption, in the footer of your website, on the contact or privacy disclaimer page.
Free Icons: Flags of the world by BannerFlow is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Permissions beyond the scope of this license may be available at http://www.bannerflow.com/contact.
Other icon sets: