Spanish phrase
¿En qué formato debo ~?
Meaning
In what format should I ___?
When to use it
Asks which file format to use. It is a polite neutral question for confirming preferred image or document types when sending files.
Example dialogue
¿En qué formato debo enviar las fotos?
In what format should I send the photos?
PNG está bien, así no pierden calidad.
PNG is fine, that way they won't lose quality.