This is the commonly used size: we found no requirement published by the institution. Confirm it before your application.
Tips to get it right the first time
Postal applications with a D1 pack need a recent printed passport-type photo.
Do not sign the back of the photo.
Online, the service tells you how to provide your photo when you sign in.
How to do it with Requisito Listo
Open the «Driving licence photo (by post)» template in the app.
Take the photo with the on-screen guide (or pick one from your gallery).
The app centers your face, makes the background white and gets the exact size and file weight.
Check the checklist, then upload or save it.
At the end you'll see a checklist: size, file weight, background and format. If something doesn't comply, it tells you what to fix before the portal rejects it.