You can easily get your visa extended or renewed by 2 main ways: visiting a Vietnam Immigration Department or contacting a travel agency. Normally, extending or renewing your Vietnam visa at a travel agency is faster and easier for you because of hassle-free and no red tape. What you need to prepare is just your original passport with 2 blank pages. It normally takes 4-7 days for your visa to be extended or renewed. That is the reason why you need to extend your Vietnam visa at least 1 week before the printed expiry date on your visa. Urgent service is also available and it saves you much time but you must pay additional charge for sure.