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.. _lang-packs:
Installing additional language packs
====================================
OCRmyPDF uses Tesseract for OCR, and relies on its language packs for languages other than English.
Tesseract supports `most languages <https://github.com/tesseract-ocr/tesseract/blob/master/doc/tesseract.1.asc#languages>`_.
You can often find packages that provide language packs:
.. code-block:: bash
# Display a list of all Tesseract language packs
apt-cache search tesseract-ocr
# Install Chinese Simplified language pack
apt-get install tesseract-ocr-chi-sim
You can then pass the ``-l LANG`` argument to OCRmyPDF to give a hint as to what languages it should search for. Multiple
languages can be requested using either ``-l eng+fre`` (English and French) or ``-l eng -l fre``.
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