Which website provides an accurate, downloadable English translation of the Holy Quran?

You can visit the Islamweb website; it has a translation of the Holy Quran in English and other languages, with the caveat that the translation serves as an interpretation and cannot convey the meanings of the Quranic words with absolute precision, nor can it convey its splendor and eloquence. Rather, it is an interpretation, even though it is generally not free from errors.