You can apply Vietnam Visa through by two ways :
Both ways are convenient but applying through Local Embassy is time consuming process, it took more time compared to online process. On another hand if we talk about online procedure it is fast and easy way to get Vietnam Visa. You need to fill a online form, submit online fees, within 2 working days you get Visa Approval Letter on your Email. You need two recent passport size photographs with Visa Approval Letter, along with your stamping fees and entry-exit form at immigration office. After all legal clearance, you got your Visa from there.