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Old 11-02-2011, 04:41 PM   #15
Starson17
Wizard
Starson17 can program the VCR without an owner's manual.Starson17 can program the VCR without an owner's manual.Starson17 can program the VCR without an owner's manual.Starson17 can program the VCR without an owner's manual.Starson17 can program the VCR without an owner's manual.Starson17 can program the VCR without an owner's manual.Starson17 can program the VCR without an owner's manual.Starson17 can program the VCR without an owner's manual.Starson17 can program the VCR without an owner's manual.Starson17 can program the VCR without an owner's manual.Starson17 can program the VCR without an owner's manual.
 
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Convert Images to Grayscale

For those who have grayscale only readers, this will convert images to grayscale. It saves between 8% and 20% of space. My tests on raw individual images showed 8%, but tests reported by others showed up to 20% reductions for the final ebook. YMMV

Spoiler:
Code:
from calibre.utils.magick import Image

    def postprocess_html(self, soup, first):
        #process all the images
        for tag in soup.findAll(lambda tag: tag.name.lower()=='img' and tag.has_key('src')):
            iurl = tag['src']
            img = Image()
            img.open(iurl)
            if img < 0:
                raise RuntimeError('Out of memory')
            img.type = "GrayscaleType"
            img.save(iurl)
        return soup

Last edited by Starson17; 11-04-2011 at 09:51 AM.
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