Koreader is poor in handling Internet Archive books

MaxStirner · 10-19-2022, 11:04 AM

And it seems to be non device speciffic. Doesn't matter whether it is a flagship phone, Kobo Aura, Kindle pw 4 Hangs up or crashes pretty much everytime I open one of these books. Can anything be done about it?

pazos · 10-20-2022, 07:05 AM

Quote:

Originally Posted by MaxStirner

And it seems to be non device speciffic. Doesn't matter whether it is a flagship phone, Kobo Aura, Kindle pw 4 Hangs up or crashes pretty much everytime I open one of these books. Can anything be done about it?

Internet Archive Books is not a mimetype the app understand. I'm assuming you're talking about epubs.

In that case please put a link here pointing to one of the files that make the app hang/crash. Since you're talking about IA I'm assuming you're downloading books in the public domain.

Most probably are broken documents but it is always interesting to learn from somebody else's errors

MaxStirner · 10-20-2022, 04:19 PM

No I am thinking about pdfs And even if Koreader does not ultimately crash or hang up, it takes ages tobrender a page

JSWolf · 10-20-2022, 04:20 PM

Quote:

Originally Posted by MaxStirner

No I am thinking about pdfs And even if Koreader does not ultimately crash or hang up, it takes ages tobrender a page

Aren't Internet Archive PDF just images? If so, then that's why they are so slow.

MaxStirner · 10-20-2022, 04:32 PM

Quote:

Originally Posted by JSWolf

Aren't Internet Archive PDF just images? If so, then that's why they are so slow.

Ok, but then my reasoning is this - even if eink devices do not have the resources to manage such files (not enough ram, too weak processor etc), could the process be made somehow faster on other decices like tablets or phones? They have tons of memory and should be able to deal with that..

pazos · 10-20-2022, 05:10 PM

Ok, so broken documents

Use any pdf reader based on Pdfium (like anything based on Chrome or mostly anything based on android). They can help as they spawn multiple threads to render a single document and can handle multiple documents spawing multiple processes (each one with multiple threads).

That doesn't fix the nature of the documents. They will be still broken, will be still slow to navigate them or to jump pages.

If you want to read them using KOReader your best bet is to convert them to djvu. Or just reprint them with ghostscript tweaking some parameters. Or maybe there's a tool that's able to fix utterly big images on them automagically or, at least, fix/convert the color space.

MaxStirner · 10-21-2022, 01:52 PM

Yes, i did a quick search on Koreader issues, turns out someone has already noticed the problem, and has a possibble soulution, happy to see that I am not alone. To bad that it looks like the issue is frozen
https://github.com/koreader/koreader/issues/7992

10-19-2022, 11:04 AM	#1
MaxStirner Connoisseur Posts: 71 Karma: 18500 Join Date: Apr 2013 Device: Kindle Touch, Paperwhite	Koreader is poor in handling Internet Archive books And it seems to be non device speciffic. Doesn't matter whether it is a flagship phone, Kobo Aura, Kindle pw 4 Hangs up or crashes pretty much everytime I open one of these books. Can anything be done about it? Last edited by MaxStirner; 10-19-2022 at 11:58 AM.

10-21-2022, 01:52 PM	#7
MaxStirner Connoisseur Posts: 71 Karma: 18500 Join Date: Apr 2013 Device: Kindle Touch, Paperwhite	Yes, i did a quick search on Koreader issues, turns out someone has already noticed the problem, and has a possibble soulution, happy to see that I am not alone. To bad that it looks like the issue is frozen https://github.com/koreader/koreader/issues/7992 Last edited by MaxStirner; 10-21-2022 at 01:56 PM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Internet Archive	tubemonkey	Audiobook Discussions	0	08-30-2014 02:27 PM
Internet Archive preserves paper books	wallcraft	General Discussions	24	06-18-2011 02:17 PM
Shortcovers (Kobo?) adds 1.8 million scanned books from The Internet Archive	anurag	News	11	06-15-2011 06:15 AM
ARTICLE: Internet Archive BookServer	ekaser	News	3	10-20-2009 10:20 PM
Images from Google Books, Internet Archive, etc.	vivaldirules	Upload Help	18	09-17-2009 10:00 AM

10-20-2022, 04:19 PM	#3
MaxStirner Connoisseur Posts: 71 Karma: 18500 Join Date: Apr 2013 Device: Kindle Touch, Paperwhite	No I am thinking about pdfs And even if Koreader does not ultimately crash or hang up, it takes ages tobrender a page

10-20-2022, 05:10 PM	#6
pazos cosiñeiro Posts: 1,271 Karma: 2200049 Join Date: Apr 2014 Device: BQ Cervantes 4	Ok, so broken documents Use any pdf reader based on Pdfium (like anything based on Chrome or mostly anything based on android). They can help as they spawn multiple threads to render a single document and can handle multiple documents spawing multiple processes (each one with multiple threads). That doesn't fix the nature of the documents. They will be still broken, will be still slow to navigate them or to jump pages. If you want to read them using KOReader your best bet is to convert them to djvu. Or just reprint them with ghostscript tweaking some parameters. Or maybe there's a tool that's able to fix utterly big images on them automagically or, at least, fix/convert the color space.