Repair of epub - fixing fonts

nindotza · 10-16-2020, 12:52 AM

I have been editing and fixing epub books that I have downloaded. One of the issues I have not been able to handle is when fonts are broken. This is probably a terribly complex issue with no quick answers, but I could use a tip when a font .oft file shows up in the calibre file broswer with an exclamation point and when running the "check book" function gives this error:

ERROR: Not a valid font: unpack_from requires a buffer of at least 52092 bytes for unpacking 16 bytes at offset 52076 (actual buffer size is 52080)****[OEBPS/Fonts/font00292.otf]

Note i am on macos

Thanks

kovidgoyal · 10-16-2020, 02:14 AM

Delete the font or replace it. there's no way to repair a broken font file.

10-16-2020, 12:52 AM	#1
nindotza Member Posts: 20 Karma: 10 Join Date: Mar 2020 Device: Moon+ Reader	Repair of epub - fixing fonts I have been editing and fixing epub books that I have downloaded. One of the issues I have not been able to handle is when fonts are broken. This is probably a terribly complex issue with no quick answers, but I could use a tip when a font .oft file shows up in the calibre file broswer with an exclamation point and when running the "check book" function gives this error: ERROR: Not a valid font: unpack_from requires a buffer of at least 52092 bytes for unpacking 16 bytes at offset 52076 (actual buffer size is 52080)****[OEBPS/Fonts/font00292.otf] Note i am on macos Thanks

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
fixing embedded links in EPUB	helpplease	Editor	0	09-06-2020 10:22 PM
Fixing an epub	HowardBrazee	Calibre	1	11-23-2017 09:42 AM
Fixing an epub from KindleImport	dhdurgee	Sigil	1	02-04-2016 02:25 PM
Fixing fixed layout Epub for Ibooks ?	Firebrand007	ePub	2	12-15-2014 01:41 PM
How is fixing EPUB errors going	seonj	Introduce Yourself	3	09-02-2011 05:31 PM

10-16-2020, 02:14 AM	#2
kovidgoyal creator of calibre Posts: 45,341 Karma: 27182818 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Delete the font or replace it. there's no way to repair a broken font file.

Advert