PDF Translator lets you upload a PDF, pick the source and target languages, and get back a translated file that keeps its formatting. It runs in the browser and does not ask you to create an account before you start.
The free allowance covers 600 pages each calendar month, with files up to 20MB and up to three jobs running at once. You can also choose a translation style. It suits anyone who regularly receives reports, papers or forms in a language they do not read well.