circle-flags 
A collection of circular SVG country flags, made by @HatScripts.
This is a re-hosted version of the original circle-flags project, enabling easy access to the flags via Cloudflare CDN instead of GitHub Pages.
The skk.moe and circle-flags.cdn.skk.moe domains are owned and operated by @SukkaW.
This service is provided for free with limited best effort, no SLA or warranty guaranteed. If you need a more reliable service, please consider self-hosting the original repository.
Usage
https://circle-flags.cdn.skk.moe/flags/xx.svg
(Where xx is the ISO 3166-1 alpha-2 code of a country).
For example, the following code:
<img src="https://circle-flags.cdn.skk.moe/flags/br.svg" width="48" />
<img src="https://circle-flags.cdn.skk.moe/flags/cn.svg" width="48" />
<img src="https://circle-flags.cdn.skk.moe/flags/gb.svg" width="48" />
<img src="https://circle-flags.cdn.skk.moe/flags/id.svg" width="48" />
<img src="https://circle-flags.cdn.skk.moe/flags/in.svg" width="48" />
<img src="https://circle-flags.cdn.skk.moe/flags/ng.svg" width="48" />
<img src="https://circle-flags.cdn.skk.moe/flags/ru.svg" width="48" />
<img src="https://circle-flags.cdn.skk.moe/flags/us.svg" width="48" />
…produces this:
To view all the available flags, check the gallery.
Contributing
Please contribute the original circle-flags repository directly, make sure to follow their guidelines.
This re-hosted version will sync changes from upstream on a daily basis.
License
The original circle-flags project is licensed under the MIT license.