The order matters, and it is the reverse of what seems logical.
Apostille first, translation second. A document translated before legalisation may be rejected by the authorities. Croatia follows the same logic and adds one more step: the text of the apostille itself must also be translated — something people forget constantly.
Only a sworn translator from the official register may translate. Not a translation agency, not a native speaker, not a friend who knows the language well. In Croatia that is an ovlašteni sudski tumač; in Slovakia, a translator from the Ministry of Justice register. An ordinary agency charges less, but such a translation will not be accepted.
A typical story: someone finds an agency three times cheaper, translates the whole set, files it — and gets a refusal stating that the translation was not done by a sworn translator. Money and weeks lost, documents to be redone.
What cannot be apostilled at all: laminated documents, documents with a photograph (passports, ID cards) and certified copies — originals only.
Ministry of Justice of Slovakia
The primary source on apostilles: which authority certifies what, when an apostille suffices and when consular legalisation is required. Phone numbers for consultations are listed.
The split matters: different categories of documents go through different authorities, and you cannot send everything to a single window.
Where to look: Medzinárodné právo → Verification of documents
Ministry of Justice of Slovakia
The Ministry of Justice's official translator database. It is in Slovak only, but searching is straightforward — you need the language-pair filter.
A translation by a translator from this register requires no further certification and is accepted by the authorities directly.
Where to look: Registre → Zoznam prekladateľov
Ministry of Education of Slovakia
A separate route for diplomas, school certificates and study records. They are certified by the Ministry of Education, and without this first step the Ministry of Foreign Affairs will not legalise them further.
Relevant to anyone going to study or having qualifications recognised.
Where to look: Apostille / superlegalizácia
SAIA — a state agency
The whole procedure broken down step by step in English — useful when the authorities' own pages read too bureaucratically.
One point stands out: Slovak embassies sometimes produce translations themselves for use inside the country, in which case no further certification is needed. The service is rare, but where it is available it saves both time and money.
Where to look: Authentification of documents