Quote:
Originally Posted by mike.foster
It worked.
-odpi 60 to get to 56kb. More blurry than Fine Tune, though. I would do -odpi 100 which generates a file of size 109. That's 3/4 reduction.
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I don't care about file size on my PRS-T1 that much, why is it so important to you ?
I care about flipping speed, visual quality, 100% text accuracy and ability to use handwriting on every page without the need to leave landscape zoom for normal view before.
Those I can get using k2pdfdopt's modes.
In your case I've used whitetreshold -wt 70 function to reduce the file size a bit before (usually I use it in a case of poor contrast because of darker backgrounds) then -cmax 3 for better contrast and then default landscape(fitwidth) mode for Kindle that is not too far from Sony's screen dimensions.
I am also usually able to find a sweet spot using Sony's native contrast controls (adjust view, custom) only.
For a reduced pdf size those with Adobe Acrobat should try ClearScan OCR (example 2 in attachment), after applying whitetreshold -wt 70, and then gamma -g 0.3 or lower if this (default 0.5) was not dark enough.