Diacritize Arabic text is a free online tool that adds diacritics to characters and words of Arabic text such as fathatan, dammatan, kasratan, fatha,damma,kasra, sukun, shadda. Arabic diacritics are usually omitted in writing because native speakers can guess the meaning of words from the context. However, for non-native speakers, tashkeel symbols are very important to define the proper pronunciation of words, and hence disambiguate their meanings. If you seek to add harakat, diacritics, or tashkeel to Arabic text, then this is your tool. With this free online Arabic tashkeel tool, you can quickly and easily add missing tashkeel to Arabic text files online.