MobileRead Forums - View Single Post - Why is Calibre modifying every PDF that it imports?

MelBr · 03-13-2013, 02:01 AM

Hi guys,

I've discovered today that Calibre actually modifies every single PDF file that it imports. I got a nasty surprise when I was double checking files and was performing backup and all of the imported files were being scheduled for a backup when a simple inode change on my backup server should have been sufficient.

I double checked with diff and md5 and the files are indeed different!

This is before I did any metadata lookup or anything. Files were imported without metadata lookup selected and only ISBN field was populated using regexp option.

I find this behavior troubling. Calibre shouldn't be messing with PDF files. It's not modifying mobi/epub/djvu... but it's modifying PDF.

Melanie

Calibre 0.9.22 running on Mountain Lion.

03-13-2013, 02:01 AM	#1
MelBr Zealot Posts: 105 Karma: 414068 Join Date: Feb 2013 Device: iPad Pro, Kobo Aura One	Why is Calibre modifying every PDF that it imports? Hi guys, I've discovered today that Calibre actually modifies every single PDF file that it imports. I got a nasty surprise when I was double checking files and was performing backup and all of the imported files were being scheduled for a backup when a simple inode change on my backup server should have been sufficient. I double checked with diff and md5 and the files are indeed different! This is before I did any metadata lookup or anything. Files were imported without metadata lookup selected and only ISBN field was populated using regexp option. I find this behavior troubling. Calibre shouldn't be messing with PDF files. It's not modifying mobi/epub/djvu... but it's modifying PDF. Melanie Calibre 0.9.22 running on Mountain Lion. Last edited by MelBr; 03-13-2013 at 02:16 AM.