Hindi OCR: Image to Hindi Text

Hindi is written in Devanagari, which Article 343 of the Constitution of India names as the script of the Union's official language. Unicode assigns it the block U+0900 to U+097F, and every modern phone and computer can display and type it. Recognizing it from a picture is a different matter from reading Latin print, because the script is built differently.

Words hang from a continuous top line, the shirorekha, so letters touch each other and cannot be cut apart by looking for gaps. Vowels after the first one are written as matras attached to the consonant. Two or more consonants without a vowel between them merge into a conjunct such as क्ष, त्र or श्र. Modern OCR engines handle this by reading whole lines with neural networks trained on Hindi text; the open-source Tesseract engine, for example, ships a dedicated Hindi model alongside a general Devanagari one.

That is why choosing Document language matters more for Hindi than for most European languages. With English selected, a Hindi page produces nonsense; with Hindi selected, the engine expects Devanagari shapes, applies Hindi spelling patterns and writes the result in the correct Unicode order. For a broader overview of languages and outputs, see the image to text converter.

Small marks decide accuracy in Hindi. A nukta or a chandrabindu is only a few pixels tall, and it is the first thing to vanish in a blurry or heavily compressed photo. Scan at 300 DPI or photograph the page so it fills the frame, and send the original file rather than a copy forwarded through a chat app.

Straighten pages matters more than usual, because a tilted headline breaks the line the engine follows. Keep it on, and turn on Enhance contrast for faded newsprint, old government forms or photos taken in dim light. Leave Also recognise on none for pages that are Hindi only; a second language slightly lowers accuracy when it is not needed.