Contrast
Embolden: only embolden text in PDF
Sharpen Img: Make blur image
sharper
Watermark Bleaching: Bleach the
light-color images or background on the page
Dark Color Enhancement: Adjust for the whole page or only the
text, making the display darker;
Picture dithering: Optimize the display effect of pictures with
gradient colors;
Navigation
This section includes Comic Mode, Article Mode, Reflow, and more
custom settings. You can crop a scanned PDF, divide it into
columns, and set its browsing orders.
Navigation / More
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