Talk:DjVu/Archive 2

Open format?
With patents? It might be a good idea to mention that in case anyone reading this article is thinking of adopting the format. For a user it makes little difference since they can just use the free viewers (even Irfanview can show them), but for people wanting to write encoder/decoder support into their own (commercial) software this is a very big deal. This effectively makes it no more or less open a format than PDF or Postscript. 71.196.246.113 (talk) 15:31, 9 February 2013 (UTC)
 * What patents? DjVu is generally considered an open format and has very good free software tools for producing it, although not as good as some commercial ones by the original producers. I've not investigated but I've always thought this was just about software source and licenses rather than patents? It would be very nice if you could add more references. Thanks, Nemo 18:05, 9 February 2013 (UTC)
 * http://djvu.org/forum/phpbb/viewtopic.php?t=727 5900953, 6058214, 6188334, 6281817, 6343154, 6476740, 6587588, 6728411, 6901169 (USA)  This is just from the 3rd link on 'djvu' and 'patents' using Google.  In case that page disappears, I put the list of numbers here.
 * Fortunately the page is available in the Internet Archive: https://web.archive.org/web/20101122094547/http://djvu.org/forum/phpbb/viewtopic.php?t=727 — Preceding unsigned comment added by Jsbien (talk • contribs) 04:34, 7 August 2020 (UTC)
 * http://djvu.sourceforge.net/licensing.html More info. 71.196.246.113 (talk) 08:47, 22 February 2013 (UTC)

broken link
The second external link at the bottom of the page is broken. Maybe it should be http://djvulibre.sourceforge.net/ but I am not sure. — Preceding unsigned comment added by 2001:6B0:E:2018:0:0:0:207 (talk) 15:47, 12 February 2013 (UTC)
 * Works fine - it was just down for a while I guess. Next time try a "is it down" or "downforeveryoneorjustme" website.  They generally tell roughly the last time the site was reachable. 71.196.246.113 (talk) 08:54, 22 February 2013 (UTC)

Misleading statement on PDF
The second paragraph in the history section suggests that djvu is a superior format to PDF because it is an open file format probably because in the referenced audio file Brewster Kahle states that PDF is a proprietary format. But this is incorrect. As PDF is a published specification (ISO32000) maintained by a standards organization it is also an open file format. — Preceding unsigned comment added by 14.2.24.218 (talk) 12:33, 29 July 2013 (UTC)

Also, are the statements regarding DjVu being more compact than PDF still accurate? When DjVu was first developed, PDF did not support JBIG2 or JPEG 2000, but both are in PDF versions ≥ 1.5, released in 2003. Since the tools to manipulate DjVu have stagnated, it might be worth revisiting the widespread use of DjVu instead of ISO 32000 files. --scruss (talk) 00:38, 25 December 2014 (UTC)


 * Thanks to an unregistered user's edit earlier, we now have some more context on integration with FLOSS and other historical notes.
 * On the openness of PDF: there's still a legitimate concern with the fact that a lot of the PDF specifications are only supported by some Adobe or proprietary software, that DjVu is supported by (more) free software low-level editing (e.g. for text layer), and so on. I've not searched such source and I believe the unregistered user's point about fonts is likely to have been the main source of concern at the time. --Nemo 20:31, 21 August 2018 (UTC)

Djvu vs. DjVu?
This article uses both at the moment, but I believe that DjVu is correct. Dmoerner (talk) 09:30, 3 June 2014 (UTC)

External links modified
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Etymology
Why the DjVu would be spelled like "deja vu"? What is the etymology of DjVu? —Yours sincerely, Soumyabrata 04:30, 19 July 2019 (UTC)