Not all the languages are available

Why in the world does this not have all of the languages on the translate.google website? It only has Chinese, Dutch, English, French, German, Greek, Italian, Japanese, Korean, Portuguese, Russian, and Spanish. My target language, Arabic, is the sixth most commonly spoken language, and its not here! If its just a wrapper for the website, why would they only offer 12 out of the 53 languages translate.google offers?

E.TeeAy about Translation Widget