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New User
pix123
Posts: 1
Registered: ‎11-30-2010
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problems with text size on some PDF's

I have a small problem with some of the PDF's I save onto my nook.  Most files I can adjust the font size, but some of my PDF files don't let me adjust the font size at all, thus leaving me with tiny 4-6 font text, which is difficult to read.

 

Anyone have any ideas on why I can't adjust the font size on some of the PDF files?  Any suggestions on what I can try to do to correct the font size issue?

 

Thanks.

Doug_Pardee
Posts: 5,504
Kudos: 3,957
Registered: ‎03-09-2010
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Re: problems with text size on some PDF's

Some PDFs are just graphical scans of pages. There's no text to be expanded. NOOK doesn't provide any way to deal with those.

 

Inspired Contributor
withfeeling
Posts: 756
Registered: ‎11-16-2010
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Re: problems with text size on some PDF's

PDF is a quite complicated format internally. It was never really intended to be "reflow'd" in the way that viewers do it to make the text readable on small screens instead of full-size paper. Different PDF creation methods provide different amounts of help to the app reflowing the text. In short, Your Mileage May Vary.

New User
francicFC
Posts: 2
Registered: ‎07-07-2011
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Re: problems with text size on some PDF's

I have a bit different problem: with a PDF file, if I choose small cxharacter, he pages are OK, with lines as in the library of ADE, but, if I choose a more readable size (medium or large), lines are continuing below without spaces for half line and interruption of words very random, so that readability is very poor. Can anyone suggest how to get better look and readabilirty? Thanks

Doug_Pardee
Posts: 5,504
Kudos: 3,957
Registered: ‎03-09-2010
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Re: problems with text size on some PDF's

The only way to get better readability is: don't read PDFs on your NOOK.

 

As noted in the post above yours, PDF is a page-layout format, not an e-book format. At the "small" size, NOOK shows you the page as laid out. At larger sizes, NOOK roots around in the page layout data, locating glyph sequences that probably are text fragments, then tries to decipher the glyphs into text and piece them together into something that may or may not be right. Dealing with line breaks, paragraph breaks, and page breaks is very tricky, since there's no way to tell if they're real or just an accident of the layout. Also, page headers and footers usually look like text, too.

 

It's a mess, and NOOK does about the best it can with reflow, which really is only useful "if you're desperate." Some other readers allow zoom and pan, which can be somewhat useful if they also allow landscape mode. NOOK doesn't do any of that.

 

I've used a professional PDF-to-e-book conversion program, and it's a nightmare trying to get everything set up correctly to get something even halfway decent. "Oh look, there's an fl ligature glyph, in some font that I think is an italic font, so I guess I'll tell the program to convert that to fl in italics." Yuck.

 

New User
francicFC
Posts: 2
Registered: ‎07-07-2011
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Re: problems with text size on some PDF's

Thank you for your exhaustive explanation. I too late realized I bought a PDF file and not the usual e-pub one. I partially solved my problem copying all and pasting on word, changing character size, then I saved it as PDF. Now I have a text with 2 mixed fonts, not so nice to be observed, but READABLE and with correct breaks (by the way, in Italian breaking rules are much stricter than in english... ). Ciao!

Francesco

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