Question Visa Vietnam

Hello

I am traveling to Vietnam in March/April. I apply for a Visum. Now I have a question.

I need the original passport, the approval letter, and so on. and 2 photos. I read that they need e size from 4*6cm.

Is this urgently necessary or better a bit smaller??

the on Arrival form Need it e smaller photo... Is the size very necessary? What is the best form?

Thank you for the answer.

Dear Anna,
Thank you for your email.

Please be advised that the standard size of the photos in Vietnam is 4x6 cm,  however, it is not so strict. You can use the standard size in your country.

Have a great day!