Thread: New firmware
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Old 07-31-2022, 04:07 AM   #927
rcentros
eReader Wrangler
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Join Date: Mar 2013
Location: Boise, ID
Device: PB HD3, GL3, Voyage
Quote:
Originally Posted by tomsem View Post
I did an experiment: I converted a DRM free ePub to AZW3. This AZW3 opens on my Era.

Then I took an AZW3 imported from Amazon (w deDRM applied), and did a AZW3 -> AZW3 conversion. This also opens on my Era.

So there is some additional tweak needed to the AZW3 download before it will open without an error.

But I also converted the imported AZW3 directly to ePub and compared it with the AZW3 converted from the same file. The ePub looks better to me.

It's possible that calibre's conversion to AZW3 could be improved (but if it is perfectly fine for Kindle why do anything?), or some tweak could be done on the initial import to obviate the need for this, but that will require some additional investigation...
I'm almost positive Calibre not is the culprit. I think PocketBook doesn't really handle AZW3 files correctly. I did as you suggested, converted a Kindle AZW3 DRM file to AZW3 and I was able to copy the converted file to my Touch HD 3. I could read it, but all italics, bold and chapter heading styles was lost. (Just as shown in my post with samples, above) I then looked at the converted AZW3 file in Calibre, all italics, bold chapter heading, etc., were retained. Not exactly the same as the original, but really close.

I've attached two images (3 screens). On the left is the original after being read into Calibre. On the right is the AZW3(from Amazon) to AZW3 conversion. As you can see they are pretty close, the converted uses a slightly smaller Chapter title font, but all the styling is retained. The AZW3 on the right is how the second file (middle one) displays on the PocketBook. So Calibre is doing a good job, it's PocketBook that has issues with AZW3s. (I haven't test ePubs converted to AZW3.)
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Last edited by rcentros; 07-31-2022 at 04:15 AM.
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