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If DjVu document has color images, then they'll be usually placed on background layer in this case user can take advantage of tools like ddjvu (extract only background layer) and imagemagick (auto-crop) to output just images instead whole canvas, but it can't be automated for creating PDF outputĪnother saner, but slower approach is use of regular OCR GUI tools. Lengthy comments below discuss representing smaller images from DjVu document page as separate objects, which is not easily possible because DjVu document page is itself just a single image with optional text layer, with no "information" about smaller images as separate objects. Which is identical to input DjVu file and has text layer inside:
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The program provides features such as: Pdf 2 Djvu Converter is an open source. Then this nifty program takes care of everything that's inside this folder (HTML and TIFF files with same base name) and produces output PDF file with some by-products: sample.djvu Pdf 2 Djvu Converter is an open source program that enables you to convert PDF files to DJVU. This is where pdfbeads comes in play, and we simple execute: So that we end with these file in out work folder: sample.djvu DjVu (DjVu Image) is a compressed raster image format designed to store scanned documents, includes advanced compressors optimized for low-color images, one file may contain one or more pages, used as an alternative to the PDF format. Now we extract DjVu page to TIFF format with:ĭdjvu -format=tiff -page=10 sample.djvu pg10.tif Sed intervention corrects class names in output hOCR (which is just simple HTML file) We can use djvu2hocr command (from ocrodjvu package) to extract hidden text layer from DjVu file (it doesn't do any OCR or similar, it just extracts text layer with geometry), i.e.:ĭjvu2hocr -p 10 sample.djvu | sed 's/ocrx/ocr/g' > pg10.html DOCX to PDF EPUB to PDF CDR to PDF HTML to PDF DOC to PDF RTF to PDF FB2 to PDF JPG to PDF PPTX to PDF AZW3 to PDF DJVU to PDF ODT to PDF PNG to PDF. Because the format is not widely distributed, many users prefer to convert it to a popular format such as PDF when exchanging documents. pdfbeads, that has it's own requirements which can be found by Google DjVu (deja vu) is an open source file format currently maintained by Caminova.Here is one way, which would require some not so common tools: