[poppler] (no subject)

[Yury G. Kudryashov]

shravan setty wrote:

> Hi,
> 
> I would like to use Poppler - PDFtoCairo to convert pdf documents to
> jpegs. I am interested in knowing the licensing information for commercial
> use. It would be great if you can provide me some information on it.
Disclaimer: I'm neither a poppler developer nor a lawyer. If my 
interpretation below is incorrect, I hope that one of the devs will comment.

Poppler is licensed under GPLv2+. Basically, this means the following:
- If you link to libpoppler, then your executable must be GPLv<n>, n >= 2. 
In particular, if you distribute the binary, you should provide the full 
source code on request.
- If you distribute a modified version of libpoppler, then you must provide 
all your patches on request.
- If you distribute an unmodified version of libpoppler with or without 
utils, then you should tell users that this utility is GPLv2+ and they can 
obtain source code from poppler.freedesktop.org.
- If you just use one of the utilities (pdftocairo or any other) for any 
purpose (commercial or non-commercial) on your own servers, then just use 
it.

There are some corner cases like using a modified version of pdftocairo 
inside a web-app. As far as I know, in this case you may hide your patches 
but it is better to send them upstream.

P.S.: Learn to use Subject: header in e-mail.
-- 
Yury G. Kudryashov,
mailto: urkud at mccme.ru