I believe the PDF document or eBook in question was a scanned
book of text images. The parsing or rendering of these kinds of
books should be viewed at the default font size (s)
Only then can you use the ZOOM function properly. Otherwise, what
will happen is you will get missing pages as you read the book due to
un-even scanned images. ie. Page 1 will take 3 page turns to view
vs. page 2 only 1.5 page turns etc etc.
Solution #1. Find a good OCR app and capture all text and then
re'print' or output back to PDF.
Solution #2. NitroPDF is very good at recompiling, you might want to
check it out.
Solution #3. Find the same ebook or document online that does not
use scanned images for texts.
hope this helps.
p.s. still waiting on the upload
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