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Old 11-08-2010, 06:59 PM   #1
Giuseppe Chillem
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Does changing PDF tag modifies file size

The tittle says all: If I modify the TAGS of a PDF (or DJVU) does its file size change ? (I mean: TAG, Tittle, Author, Year, Series)

Are they written back to PDF or they are only stored in METADATA DB ?
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Old 11-08-2010, 07:25 PM   #2
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They are written to the file at least on export from the library (send to device/save to disk). That ought to change the file size, although not by very much. I doubt it would be, in any practical sense, noticeable.
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Old 11-08-2010, 09:14 PM   #3
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I mean: changing TAG and other info, does phisically change the file size of the file in the directory of the library ? I mean even 1 byte. I am not interested if it changes on export.
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Old 11-09-2010, 04:23 AM   #4
Manichean
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I was talking about physical file size changes. I don't know if calibre writes metadata into the file while it still resides in the library. However, should it do, the same argument about the size added being practically irrelevant applies.
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Old 11-09-2010, 11:47 AM   #5
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metadata is not written to files in the library.
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