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Old 06-09-2009, 01:03 PM   #1
cremofix
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calibre - very slow conversion, very slow on PRS

hello folks,

I found some interesting PDF-ebooks. Because PDF viewing on my PRS-700 is not very comfortable I tried to convert them the following way:

- extract the text from the PDF via copy/paste to a Word2007 file.

- Do some corrections

- safe as ebook.rtf

import with calibre and convert to epub.


The conversion for one book (about 500 pages on the PRS700) needs more than 3 hours.

The size of the epub-book is 0.7 MB

The ebook on the PRS700 is very slow, sometimes I need 2 or 3 minutes to change a page.


Is thee any efficient way to do this kind of conversion?
Where can be the reason for the very long conversion time (usually conversion is done within 10-20 seconds)

perhaps the fonts ?

please help, because I still have mor than 50 books in PDF format to be converted...

thanks
mario
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Old 06-09-2009, 01:46 PM   #2
kovidgoyal
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Save your RTF files as clean HTML to improve performance.
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Old 06-09-2009, 02:29 PM   #3
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Quote:
Originally Posted by kovidgoyal View Post
Save your RTF files as clean HTML to improve performance.
Yep, converting RTF to anything else is v-e-r-y s-l-o-w, compared to other input formats, although I haven't run into 3-hour conversions myself...

Any idea why that is, Kovid?
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Old 06-10-2009, 04:21 PM   #4
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Because the library calibre uses to convert RTF into HTML isn't the best, so you often get better results if you convert to HTML using another program
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