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Old 06-16-2022, 08:25 AM   #1
dragoworld235
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Question No calibre metadata in epub opf file when exporting
Hi everyone,
Is there a way to configure calibre to remove calibre metadata (and bookmark file) when exporting an epub?
Or a plugin that would do the job?
I don’t like my library data, like custom columns, leaking outside.
Thanks.
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Old 06-16-2022, 10:44 AM   #2
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Turn off updating metadata in epub files if you dont want metadata written to them. Preferences->plugins->disable the epub metadata writer plugin. And turn off saving bookmarks inside epub file in the viewer preferences.
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Old 06-16-2022, 11:26 AM   #3
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Quote:
Originally Posted by kovidgoyal View Post
Turn off updating metadata in epub files if you dont want metadata written to them. Preferences->plugins->disable the epub metadata writer plugin. And turn off saving bookmarks inside epub file in the viewer preferences.
Thanks for the answer.
I think I did as you said but I’m still getting the data when writing to disk. What did I missed?
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Old 06-16-2022, 11:31 AM   #4
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The Modify Epub plugin can remove all non-dc (non-standard) metadata from the opf in an epub.
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Old 06-16-2022, 11:45 AM   #5
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Quote:
Originally Posted by dragoworld235 View Post
Thanks for the answer.
I think I did as you said but I’m still getting the data when writing to disk. What did I missed?
You have to change the option in the viewer to not have the bookmark saved inside the ePub. Also, have you edited any of these eBooks? You again have to set the editor to not update the metadata. I've not disabled any metadata plugins.

I've turned off the metadata updates in Calibre main and the editor. Also, I've turned bookmarks being saved in ePub from the viewer. When I save to disk, I have no problems. Nothing gets updated.

You turn this off in Preferences > Saving books to disk.
For the editor you do this in Edit > Preferences > Integr... with calibre.
For the viewer you do this in Preferences > Miscellaneous.
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Old 06-16-2022, 11:50 AM   #6
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If you've disabled them there is no way they are being added. Start with a fresh epub and test.
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Old 06-16-2022, 12:00 PM   #7
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Quote:
Originally Posted by chaley View Post
The Modify Epub plugin can remove all non-dc (non-standard) metadata from the opf in an epub.
Quote:
Originally Posted by JSWolf View Post
You have to change the option in the viewer to not have the bookmark saved inside the ePub. Also, have you edited any of these eBooks? You again have to set the editor to not update the metadata. I've not disabled any metadata plugins.

I've turned off the metadata updates in Calibre main and the editor. Also, I've turned bookmarks being saved in ePub from the viewer. When I save to disk, I have no problems. Nothing gets updated.

You turn this off in Preferences > Saving books to disk.
For the editor you do this in Edit > Preferences > Integr... with calibre.
For the viewer you do this in Preferences > Miscellaneous.
Thanks, now I have understood the problem and how to fix it.
Calibre keeps the metadata outside of the books.
I nearly always edit the book epub to clean it. The editor was saving the calibre metadata into the epub.
When viewing books, it was also adding the bookmark to the epub.
These settings are now set as I wanted.

I just have to clean my existing epub using the Modify Epub plugin.
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Old 06-16-2022, 12:03 PM   #8
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Quote:
Originally Posted by kovidgoyal View Post
If you've disabled them there is no way they are being added. Start with a fresh epub and test.
I was not using a clean epub, that was the problem.
(My full answer is awaiting moderation)
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Old 06-17-2022, 11:48 AM   #9
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I'm curious about something. Why the paranoia about removing identifications / watermarks from books which have been licensed to you?

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Old 06-17-2022, 11:56 AM   #10
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I'm curious about something. Why the paranoia about removing identifications / watermarks from books which have been licensed to you?
I share my library with friends and once shared, you never know where a copy could end. Better safe than sorry.
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Old 06-17-2022, 01:46 PM   #11
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Originally Posted by dragoworld235 View Post
I share my library with friends and once shared, you never know where a copy could end. Better safe than sorry.
If you cannot trust your friends not to give away these eBooks, then you should not share with them.
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