Dictionary support - surefish/koreader GitHub Wiki

KOReader supports dictionary lookup in EPUB and even in scanned PDF/DJVU documents. In order to use dictionary lookup function, you first need to install one or more dictionaries in the StarDict format.

Dictionary lookup

  • install Stardict dictionary - copy the directory containing the StarDict format dictionary files (*.idx, *.ifo, *.dict) into :

    • koreader/data/dict directory for Kindle,

  • /sdcard/koreader/data/dict directory for Android,

  • applications/koreader/data/dict directory for Pocketbook.

  • some freely available dictionaries can be converted to the StarDict format with stardicter

KOReader has a build-in OCR engine for recognizing words in scanned PDF/DJVU pages. In order to use OCR in scanned page, you need to install tesseract trained data for your document language.

  • install Tesseract language data
    • copy language data files for Tesseract 3.02 (e.g. eng.* in tesseract-ocr-3.02.eng.tar.gz for English and spa.* in tesseract-ocr-3.02.spa.tar.gz for Spanish) into koreader/data/tessdata