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ImageMagick convert -blur option with a value of about 0.05 to 0.3 can be used to smooth the text.
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The first step is to extract PDF pages as images. Different approaches are required for coloured and bitonal PDF files. If the satisfactory results can't be achieved with the existing converters, the only working method may be to extract all pages of the original file as images and create a DjVu out of them. Splitting into images and assembling them into DjVu Programming challenge here: it is desirable that someone wrote a converter that could convert even Google Books PDF files to DjVu. In that case, the conversion can be done be extracting pages in a bitmap format and assembling them into DjVu (see below).
Djvu to pdf large file software#
![djvu to pdf large file djvu to pdf large file](https://d20eq91zdmkqd.cloudfront.net/assets/images/book/large/9781/4104/9781410491336.jpg)
If -о is not specified, pdftodjvu uses the name of the input PDF-file with the '.djvu' extension. However, it has been found to crash on certain files under some conditions.
Djvu to pdf large file windows#
![djvu to pdf large file djvu to pdf large file](https://www.lifewire.com/thmb/kxDr1wiMYFK2j_bpZO5I3-LJjhQ=/1002x668/filters:no_upscale():max_bytes(150000):strip_icc()/djvu-files-5a5e6528eb4d5200378cd059-8ab399e702c44a498bb44b2380723e12.png)
However, such a conversion tends to reduce quality, so we should do what's possible to keep the acceptable quality. See Help:Creating an outline for PDF and DjVu.