I too faced this task a few months ago, and I can say that the experience was quite interesting. I was looking for ways to
translate pdf to spanish and came across Translate, which offers such a feature. At first, I just uploaded my documents and the translation was pretty fast. However, you have to keep in mind that sometimes there can be formatting issues: text can lose its structure, especially if there are a lot of tables or images in the document. Plus, automatic translations often fail to cope with context. For example, if there are specific terms or jargon in your text, the service may not take into account their meaning, which can eventually distort the meaning. I would advise you to review the text after automatic translation and possibly correct it manually or even consult a native speaker, if available. This will help to avoid misunderstandings. In general, the service is good for the first stage, but you should be ready for additional editing. Hope this helps!