MobileRead Forums - View Single Post - "Polish Book" causing ToC to disappear in ePub?

stasiana · 11-15-2023, 10:21 AM

I am getting strange behavior when using polished epubs with a Kobo Sage. You access this feature by pressing "P" in Calibre. I've tried many different combinations of options in this menu but the latest is "update metadata", "update cover", "remove book jacket", "upgrade book internals" checked.

I get an original ePub. View it on the Kobo reader. The ToC shows properly.

I polish the ePub and send the polished version to Kobo reader. The ToC is now gone. But the Calibre reader still shows the ToC properly. So it seems like the polish process is corrupting the ToC in the way that fails on the Kobo.

If I then convert the polished ePub to a kepub and send that to the Kobo reader, the ToC shows up properly again.

Polish books does something with the ToC that makes it fail on the Kobo, it seems. Is this a bug? Anyone else seen this?

11-15-2023, 10:21 AM	#1
stasiana Member Posts: 10 Karma: 10 Join Date: Nov 2023 Device: Kobo Sage	"Polish Book" causing ToC to disappear in ePub? I am getting strange behavior when using polished epubs with a Kobo Sage. You access this feature by pressing "P" in Calibre. I've tried many different combinations of options in this menu but the latest is "update metadata", "update cover", "remove book jacket", "upgrade book internals" checked. I get an original ePub. View it on the Kobo reader. The ToC shows properly. I polish the ePub and send the polished version to Kobo reader. The ToC is now gone. But the Calibre reader still shows the ToC properly. So it seems like the polish process is corrupting the ToC in the way that fails on the Kobo. If I then convert the polished ePub to a kepub and send that to the Kobo reader, the ToC shows up properly again. Polish books does something with the ToC that makes it fail on the Kobo, it seems. Is this a bug? Anyone else seen this?