Does Calibre modify the epub file when I change something?

kelemvor · 02-25-2023, 08:04 PM

Hi,

I have a bunch of books that are part of a series. I've found some ereader apps that can see series info, but it isn't always accurate. If I import all my books into Calibre, and then take the time to set them in their proper series, does Calibre write that info back to the epub file or does it only store it in its own database?

E.g. I opened all my books in Readera. It sees Series info from most of the books, but for some it's not quite right. If I open all the books in Calibre, and set correct all the info, would Readera see the new data if I remove the books and rescan them?

I can try it out myself, but figured if someone already knew, it'd save e the time of experimentation.

Thanks.

Sirtel · 02-25-2023, 08:17 PM

Quote:

Originally Posted by kelemvor

Hi,

I have a bunch of books that are part of a series. I've found some ereader apps that can see series info, but it isn't always accurate. If I import all my books into Calibre, and then take the time to set them in their proper series, does Calibre write that info back to the epub file or does it only store it in its own database?

E.g. I opened all my books in Readera. It sees Series info from most of the books, but for some it's not quite right. If I open all the books in Calibre, and set correct all the info, would Readera see the new data if I remove the books and rescan them?

I can try it out myself, but figured if someone already knew, it'd save e the time of experimentation.

Thanks.

You can embed the changed metadata into an epub file with the Polish Books function.

DNSB · 02-25-2023, 10:17 PM

The altered metadata will also be embedded when you save to disk or send to device.

ownedbycats · 02-25-2023, 10:58 PM

Not the metadata itself. The default settings of ebook-viewer will embed (or update) a bookmark file for at least ePubs.

02-25-2023, 08:04 PM	#1
kelemvor Enthusiast Posts: 49 Karma: 10 Join Date: Jan 2013 Device: Android	Does Calibre modify the epub file when I change something? Hi, I have a bunch of books that are part of a series. I've found some ereader apps that can see series info, but it isn't always accurate. If I import all my books into Calibre, and then take the time to set them in their proper series, does Calibre write that info back to the epub file or does it only store it in its own database? E.g. I opened all my books in Readera. It sees Series info from most of the books, but for some it's not quite right. If I open all the books in Calibre, and set correct all the info, would Readera see the new data if I remove the books and rescan them? I can try it out myself, but figured if someone already knew, it'd save e the time of experimentation. Thanks.

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02-25-2023, 10:17 PM	#3
DNSB Bibliophagist Posts: 43,482 Karma: 165170834 Join Date: Jul 2010 Location: Vancouver Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos	The altered metadata will also be embedded when you save to disk or send to device.

02-25-2023, 10:58 PM	#4
ownedbycats Custom User Title Posts: 10,332 Karma: 73404781 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	Not the metadata itself. The default settings of ebook-viewer will embed (or update) a bookmark file for at least ePubs.

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