There are some countries such as Spain, France or the Netherlands, where a translator becomes a sworn translator by taking an oath before a court, so that his or her translations are accepted as a full and faithful version of the original and in accordance with legal requirements.
What is a sworn translator?
A sworn translation is a document that has been signed and sealed by an authorized (sworn) translator. Sworn translators are linguists who have been appointed by the legal authorities to provide official translations. A sworn translation has the same value as any other official documents in the eyes of the law.
How do you do a sworn translation?
THE FORMAT OF A SWORN TRANSLATION
Signature: Mr / Mrs (name and surname), Sworn Interpreter of (language), certifies that the present document is a faithful and complete translation into (destination language) of a document originally written in (language of the original). In (location), on (date).