The language Paraguay requires
A certified translation into Spanish is required for documents used in Paraguay, so an English record from Northern Ireland needs a Spanish version filed with it. A certified translation into Spanish in Belfast leaves the source alone: no stamp goes on it, no wording is touched, and it keeps precisely the standing it had before the work began.
What people expect to see
The picture in most heads is a raised seal, a coloured ribbon, or a rubber stamp in the corner of the page. None of that appears. What arrives is plain: the Spanish text, and a short page signed and dated by the person who wrote it. The first reaction is often that something has been left out, when nothing has.
Why a signature is the form it takes
A stamp says an office was involved. A signature says a named person is answerable for the wording and can be pointed to afterwards. That is the claim on this route, and it is a narrow one: the translator vouches for the Spanish matching the English, and for nothing beyond it. An official Spanish translation in Belfast makes no wider promise than that, which is a strength rather than a gap.
Where the Belfast source comes from
Northern Ireland runs its own civil registration, so a birth, marriage or death registered in Belfast is issued by the General Register Office for Northern Ireland (GRONI) at Colby House, Stranmillis Court, Belfast BT9 5RR rather than by a registry in England, Wales or Scotland. That office works by post, and the copy it sends is a certified record in its own right, which is why it can go to the translator in place of your own sheet.
Cost and pace
The rate is about £25 for each page as issued, and standard production takes 2–3 business days once readable scans exist. A 24-hour route is available where a date is close. A certified translation for Paraguay is quoted on the page count, so how plain the finished article looks has no bearing on the figure — only the sides of paper do.