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Re: [Fwd: Re: Question - Adobe Products - Acrobat]
On Tue, 30 Jul 1996, Udi Finkelstein wrote:
>On Tue, 30 Jul 1996 19:37:02 +0300 (IDT), Meir Litmanovich
><mlitmano@sunbeam.cs.biu.ac.il> wrote:
>>Hmm ! I think I saw it at Infomagic CDROMs .As I understand Ira
>>also .May be it's secret ? Or in Adobe the right hand doesn't
>>know what left hand does ? Anyway ,try Ira's ftp , and I'll try this
>>night my copy and we'll see what's going on .
>You might have seen XPDF which is a freely redistributable PDF viewer. I'm not
>sure it can view all PDF types (yes, there are a few versions and types of PDF
>files).
>Check:
>http://www.contrib.andrew.cmu.edu/usr/dn0o/xpdf/xpdf.html
It seems there is some encryption information that Adobe is
withholding. Here is what I get when I run xpdf against a sample file
-----------------------
> xpdf 2864iman.pdf
xpdf version 0.5
Copyright 1996 Derek B. Noonburg
Error (0): PDF file is encrypted and cannot be displayed
Error (0): * Please send email to devsup-person@adobe.com and ask
Error (0): * them to prove that PDF is truly an open standard by
Error (0): * releasing the decryption specs to developers. Also,
Error (0): * please send email to the person responsible for this
Error (0): * file (webmaster@... might be a good place) and ask
Error (0): * them to stop using encrypted PDF files.
-----------------------
On other files, I get
-----------------------
>xpdf 1450.pdf
xpdf version 0.5
Copyright 1996 Derek B. Noonburg
Error (0): Kid object (page 1) is wrong type (dictionary)
Error (0): Couldn't read page catalog
-----------------------
and no pictures as well
Needless to say, Adobe Acrobat has no problem handling the files.
But when it works, xpdf works quite well
alex
References: