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Kovid Goyal 2011-06-17 18:52:14 -06:00
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src/calibre/manual/conversion.rst
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@ -657,6 +657,7 @@ Some limitations of PDF input are:
* Some PDFs store their images upside down with a rotation instruction, |app| currently doesn't support that instruction, so the images will be rotated in the output as well. * Some PDFs store their images upside down with a rotation instruction, |app| currently doesn't support that instruction, so the images will be rotated in the output as well.
* Links and Tables of Contents are not supported * Links and Tables of Contents are not supported
* PDFs that use embedded non-unicode fonts to represent non-English characters will result in garbled output for those characters * PDFs that use embedded non-unicode fonts to represent non-English characters will result in garbled output for those characters
* Some PDFs are made up of photographs of the page with OCRed text behind them. In such cases |app| uses the OCRed text, which can be very different from what you see when you view the PDF file
To re-iterate **PDF is a really, really bad** format to use as input. If you absolutely must use PDF, then be prepared for an To re-iterate **PDF is a really, really bad** format to use as input. If you absolutely must use PDF, then be prepared for an
output ranging anywhere from decent to unusable, depending on the input PDF. output ranging anywhere from decent to unusable, depending on the input PDF.