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Old 11-29-2014, 11:49 AM   #1
michelev
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help in improving readability of a pdf file
I have a pdf file that, when transferred to my kindle looks more "washed out" as opposed when I open on my pc screen: whites look a bit greyer and especially black text turn towards a lighter and thinner black, resulting in worse readabilty.

I cannot convert it to another format because the pdf is full of screenshot and imaged, which would not convert well in calibre.

Do you have any hint?

Thank you
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Old 11-29-2014, 04:25 PM   #2
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Try changing the font to something a bit darker. Make sure that the text color is black, and not some shade of gray.
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Old 11-29-2014, 04:58 PM   #3
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Quote:
Originally Posted by michelev View Post
I have a pdf file that, when transferred to my kindle looks more "washed out" as opposed when I open on my pc screen: whites look a bit greyer and especially black text turn towards a lighter and thinner black, resulting in worse readabilty.

I cannot convert it to another format because the pdf is full of screenshot and imaged, which would not convert well in calibre.

Do you have any hint?

Thank you
Kindle 4 (The latest Kindle I have) has a contrast setting for PDF.

While the PDF is open, you should be able to bring up a menu that has an entry labeled something like: "Zoom & Contrast" Selecting that should bring up a dialog with zoom, contrast, and rotation settings. If you contrast is default, there should be 2 darker setting labeled "darker" and "darkest".

Presumably more recent Kindles have similar capability.
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Old 11-30-2014, 06:40 AM   #4
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Old 11-30-2014, 08:52 AM   #5
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Try holding the device in landscape mode.

If that doesn't work, convert the PDF into a bunch of images and then save those images as a .mobi (e.g. using Kindle Comic Converter). It won't be search-able (just like a real paperback book), but hey, at least it's readable.
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Old 11-30-2014, 01:49 PM   #6
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Quote:
Originally Posted by susan_cassidy View Post
Try changing the font to something a bit darker. Make sure that the text color is black, and not some shade of gray.
That's not going to work in this case since these are scanned "pictures" of the text, so changing the font won't help.
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