This is one of the questions that causes the most hesitation, since "official" has traditionally been associated with an ink stamp and a handwritten signature. The answer, however, is clear: a sworn translation delivered as a PDF with an electronic signature carries exactly the same legal validity as one delivered on paper with a stamp and a handwritten signature.
What the regulations say
Sworn translators and interpreters appointed by the Spanish Ministry of Foreign Affairs, European Union and Cooperation may certify their translations with an electronic signature, in accordance with current electronic signature regulations and the instructions of the Office of Language Interpretation. The resulting signed PDF holds the same status as a public document as a paper version: it is not a copy or a "provisional" version, it is the sworn original.
What exactly does the electronic signature guarantee?
- Translator identity: it confirms that the translation was certified by the sworn translator appointed by the Ministry.
- Document integrity: any alteration made after signing is detectable — a signed PDF cannot be modified without it being noticed.
- Validity before third parties: public authorities, universities, notaries and official bodies, both in Spain and abroad, are required to accept it on equal terms with a handwritten signature.
The format of delivery (paper or PDF) does not change the legal value of the translation. What gives it validity is the official appointment of the sworn translator, not the physical medium.
Can an authority reject it for being digital?
In practice, if the document is submitted correctly (a PDF with a visible and verifiable electronic signature, unaltered), there is no legal basis to reject it solely for not being on paper. If an official is ever unfamiliar with this format, documentation confirming the sworn translator's appointment and the validity of the electronic signature can be provided to resolve any doubt.
Can I print the translation if it is requested on paper?
Yes, without issue. An electronically signed PDF can be printed as many times as needed — it retains full validity, just as with any officially signed digital document (invoices, certificates, contracts).
Does it work for procedures outside Spain?
Yes. It is common to work with clients living abroad — the United Kingdom, the United States, and other countries — who need to submit their sworn translations to consulates, universities or local authorities. The digital format, in fact, makes delivery considerably easier when the recipient is outside Spain.
Not sure whether your authority will accept it?
Explain what the translation is for and confirmation will be given on how to submit it correctly.