Tesseract language codes for scanned pages, joined with '+', e.g. eng+deu (up to 5). 50 languages: eng (English), rus (Russian), deu (German), fra (French), spa (Spanish), por (Portuguese), ita (Italian), pol (Polish), lav (Latvian), ukr (Ukrainian), nld (Dutch), swe (Swedish), dan (Danish), nor (Norwegian), fin (Finnish), ces (Czech), slk (Slovak), hun (Hungarian), ron (Romanian), tur (Turkish), ell (Greek), ara (Arabic), heb (Hebrew), fas (Persian), urd (Urdu), hin (Hindi), ben (Bengali), tam (Tamil), tel (Telugu), mar (Marathi), tha (Thai), vie (Vietnamese), ind (Indonesian), msa (Malay), chi_sim (Chinese (Simplified)), chi_tra (Chinese (Traditional)), jpn (Japanese), kor (Korean), bul (Bulgarian), srp (Serbian (Cyrillic)), hrv (Croatian), slv (Slovenian), lit (Lithuanian), est (Estonian), cat (Catalan), glg (Galician), eus (Basque), afr (Afrikaans), swa (Swahili), fil (Filipino). All are built in. Pick only the languages present in your scans: each extra language makes OCR slower. If OCR confidence is low, the page's script is detected automatically (Latin, Cyrillic, Greek, Arabic, Hebrew, Devanagari, Bengali, Tamil, Telugu, Thai, Chinese, Japanese, Korean) and the page is re-read with that script's language added. Pages OCR'd with low confidence (below 60%) are flagged in warnings and not charged.