Dear all, to get your country flag HTML code, please add your national flag to this post and post it with country name. Do not delete the post or national flag image. Then get the code as explained in the video by @AnuradhaP and add it to your signature. Bangladesh, Pakistan, India, Nepal, Sri Lankan, Indonesia people no need to post any Flag just click here then copy then paste. VIDEO.
Here a Google Photos album that contain almost all world flags: