MobileRead Forums - View Single Post - Kobo Libra Color and Calibre

gisele · 10-22-2025, 06:04 PM

I recently purchased a Kobo Libra Color (firmware: 4.43.23418) to take advantage of the Calibre's Series and Collections. I have A LOT of books - all in both ePub and Mobi formats. When downloading from Calibre to Kobo I use auto-convert to KePub.

Everything looks fine on my PC - I've checked that the KePub has no issues. But on the Kobo - the first and occasionally second letter of every word is in Bold. I created a conversion rule to change all font-style: bold to font-style: regular. It doesn't help.

I've edited the Amazon Ember font to change weight, etc. Loaded several other Kobo recommended fonts (like Minion Pro). Every font gives the same result in
every book.

I've been using Calibre almost since it came out. I had a Kindle Version 1 which I loaded exclusively via Calibre. I've had almost every Kindle version since and have never had any problem with behavior of Calibre-converted books.

Has anyone else encountered this? Suggestions to fix please? I've searched forums and couldn't find this particular bug, but please excuse if this is a duplicate and I simply used the wrong search terms.

10-22-2025, 06:04 PM	#1
gisele Junior Member Posts: 7 Karma: 10 Join Date: Oct 2011 Device: Kindle	Kobo Libra Color and Calibre - all 1st letters bold I recently purchased a Kobo Libra Color (firmware: 4.43.23418) to take advantage of the Calibre's Series and Collections. I have A LOT of books - all in both ePub and Mobi formats. When downloading from Calibre to Kobo I use auto-convert to KePub. Everything looks fine on my PC - I've checked that the KePub has no issues. But on the Kobo - the first and occasionally second letter of every word is in Bold. I created a conversion rule to change all font-style: bold to font-style: regular. It doesn't help. I've edited the Amazon Ember font to change weight, etc. Loaded several other Kobo recommended fonts (like Minion Pro). Every font gives the same result in every book. I've been using Calibre almost since it came out. I had a Kindle Version 1 which I loaded exclusively via Calibre. I've had almost every Kindle version since and have never had any problem with behavior of Calibre-converted books. Has anyone else encountered this? Suggestions to fix please? I've searched forums and couldn't find this particular bug, but please excuse if this is a duplicate and I simply used the wrong search terms.