On 2022-12-15 20:03:51 +0000, Pat said:
Yesterday, I sent out a email to a mailing list that had a PDF file
attached. (It was the minutes of a condo board meeting.) One of the recipients said the pdf was all messed up when she read it but it
looked fine on my PC and my iPad. I experimented enough to figure out
that on her iPhone, all occurances of a bold capital N in my PDF were
being displayed as a capital I with a dot under it followed by a
space. As an example, the header "FINANCIALS" was displayed as "FII AI
CIALS" where the I's had a dot under them. No other letters were
affected. The then tried my own iPhone and saw that it had the same
problem. I had used an old program called WIN2PDF to create the pdf
file. It installs as a printer in Windows 11. When you print to it,
it instead creates a pdf file. I guessed it might be at fault and
upgraded from my very old 2008 version to the latest, but the problem
was still there. My phone had the latest version of iOS on it as of
last week, but I noticed that 16.2 was now available so I installed
it. It fixed the problem! After a lot of searching online, I have
been unable to find what they fixed that would have affected the
display of only bold capital N's in PDF files. I did find there
really is a unicode character called "Latin Capital letter I with dot
below", but not its intended use.
Any ideas? I'm just curious.
Pat
Obviously some sort of font corruption or font matching issue causing a
hiccup the older reader. The N character must be being mis-interpreted.
The easiest option could be to simply use a different font next time.
Fairly often I'll download a recipe PDF from a website for my mother
and all the "fl" characters come out as some strange single character
... which makes reading things like "flour" rather difficult if I don't
spot it and fix it first. :-\
Despite what many people like to claim, including Adobe themselves, PDF
is not the be-all and end-all of document consistency. Different OSes (including different versions), different creation apps, and different
readers can have all sorts of quirky issues displaying PDFs. Printing
the PDF can also add more issues.
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