Calibre 5.0 annotations follow standard patterns for EPUB format?

felipehw · 09-28-2020, 09:40 AM

Sorry, if I'm completely wrong. But I was searching if there is a standard way to implement annotations in EPUB format and I found this: http://idpf.org/epub/oa/

Calibre follows this pattern (or any other)?

In the case of annotations for education purposes, many people will search for "future proof" solutions. Solutions that they know will enable them to carry their annotations between software along the years to come.

kovidgoyal · 09-28-2020, 11:50 AM

That's a draft, not a standard. And no calibre does not follow it. If you want to see how annotations are serialized in calibre, use the export tool. The positions are encoded using EPUB CFI

felipehw · 09-28-2020, 12:36 PM

Thanks for your attention.

Is there no pattern yet? (It's so weird to me that a so important feature isn't standardized yet.)

Do Calibre annotations work at any other readers?

kovidgoyal · 09-28-2020, 12:49 PM

No, there is no standard, and no common pattern. And no calibre annotations dont work in any other reader.

felipehw · 09-28-2020, 01:48 PM

Thanks!

rantanplan · 09-29-2020, 02:37 AM

It's to be expected that no company wants their customers to leave their platform so Amazon/Kobo/Pocketbook/Tolino have no incentive to either create a standard or adhere to a draft.

09-28-2020, 09:40 AM	#1
felipehw Junior Member Posts: 3 Karma: 10 Join Date: Sep 2020 Device: Kobo Aura Edition 2	Calibre 5.0 annotations follow standard patterns for EPUB format? Sorry, if I'm completely wrong. But I was searching if there is a standard way to implement annotations in EPUB format and I found this: http://idpf.org/epub/oa/ Calibre follows this pattern (or any other)? In the case of annotations for education purposes, many people will search for "future proof" solutions. Solutions that they know will enable them to carry their annotations between software along the years to come.

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09-28-2020, 11:50 AM	#2
kovidgoyal creator of calibre Posts: 43,826 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	That's a draft, not a standard. And no calibre does not follow it. If you want to see how annotations are serialized in calibre, use the export tool. The positions are encoded using EPUB CFI

09-28-2020, 12:36 PM	#3
felipehw Junior Member Posts: 3 Karma: 10 Join Date: Sep 2020 Device: Kobo Aura Edition 2	Thanks for your attention. Is there no pattern yet? (It's so weird to me that a so important feature isn't standardized yet.) Do Calibre annotations work at any other readers?

09-28-2020, 12:49 PM	#4
kovidgoyal creator of calibre Posts: 43,826 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	No, there is no standard, and no common pattern. And no calibre annotations dont work in any other reader.

09-28-2020, 01:48 PM	#5
felipehw Junior Member Posts: 3 Karma: 10 Join Date: Sep 2020 Device: Kobo Aura Edition 2	Thanks!

09-29-2020, 02:37 AM	#6
rantanplan Guru Posts: 606 Karma: 8589150 Join Date: Nov 2019 Location: Wuppertal, Germany Device: Paperwhite (2021), Boox Note Air 2+, Kobo Clara 2E, Tolino Vision 6	It's to be expected that no company wants their customers to leave their platform so Amazon/Kobo/Pocketbook/Tolino have no incentive to either create a standard or adhere to a draft.