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igorius · 04-11-2026, 06:03 AM

Today i encountered a really strange problem when embedding Metadata in a PDF:

The source pdf has a size of ~4MB. After embedding metadata the same file has a size of 60MB How is that possible?

I didnt have this problem with other PDFs, so its strange in this case.
My calibre is 9.7 on Mac.

04-11-2026, 06:03 AM	#1
igorius Zealot Posts: 130 Karma: 34 Join Date: Jun 2015 Device: ipad & inkpad X	Embed Metadata Problem Today i encountered a really strange problem when embedding Metadata in a PDF: The source pdf has a size of ~4MB. After embedding metadata the same file has a size of 60MB How is that possible? I didnt have this problem with other PDFs, so its strange in this case. My calibre is 9.7 on Mac.