Quote:
Originally Posted by Bookchin
...do PDF files adjust themselves in any way to fit a given screen's aspect ratio?
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PDF files do not "adjust themselves" to fit the screen, nor to any document or ebook files.
That said, some reading software can adjust files in some formats to fit the display. PDF files, though, are almost always fixed in their layout and no application can make them fit the display without distortion of the document's appearance, possibly compromising readability. On somewhat rare occasions you will encounter a PDF file that was built with support for reflowing the text and some applications can use this to reflow the text to fit the display shape and possibly allow font size changes. Reflowing is not something that the display application can "add" to the file, it has to be done by the application that originally generated the PDF.