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Images and OCR

Embedded images

--extract-images DIR writes images from PDF, Word, PowerPoint and EPUB into DIR and links them from the Markdown. With several inputs each file gets its own sub-directory.

OCR

The ocr feature needs Tesseract:

brew install tesseract              # macOS
sudo apt install tesseract-ocr      # Ubuntu/Debian
sudo pacman -S tesseract            # Arch Linux

mq-conv photo.png --format ocr
mq-conv photo.png --format ocr --ocr-lang jpn
mq-conv mixed.png --format ocr --ocr-lang eng+jpn   # combine with "+"

OCR defaults to English. Install the matching language pack for others (brew install tesseract-lang, or sudo apt install tesseract-ocr-jpn). With the feature enabled, image-only PDF pages also fall back to Tesseract.