OH - the original file didn't have a trailer either???
Leonard
On 6/11/09 3:28 PM, "Paul Gatewood" <[email protected]> wrote:
Hi Leonard,
Thanks for the very speedy feedback.
I am using Adobe Acrobat 9 Pro, Version 9.1.1 on Windows XP.
I am going to repeat my steps here, just to be sure.
1) Start Acrobat
2) Open original file (without trailer) (sorry I can not supply this --
it has confidential information from a 3rd party)
3) Choose TouchUp Object tool (this PDF only has 2 images)
4) Right click each of the 2 images, and choose "delete"
5) Choose File -> Save As
6) Enter "leonard.pdf" for the file name (Save as type: Adobe PDF File)\
7) Exit
The file I just produced is attached.
Thanks,
-Paul
Yes, I produced the file as follows:
Leonard Rosenthol wrote:
> Yes - without the trailer you can't find anything else in the PDF.
>
> I find it VERY hard to believe that you saved that file from Adobe
> Acrobat 9.x - it would have a trailer. Please provide the file that you
> opened originally in Acrobat 9 and then any information about the saving
> process. Did you just do File->Save? Save As? Other? Is this 9.0,
> 9.1, 9.1.1 or 9.1.2? On what OS platform?
>
> Leonard
>
>
> On 6/11/09 2:19 PM, "Paul Gatewood" <[email protected]> wrote:
>
> Is the trailer element always required in a PDF document?
>
> I have recently encountered documents without the trailer (IOException
> "trailer not found" when instantiating PdfReader).
>
> In the past, the "save as" feature of Acrobat produced a PDF with the
> trailer.
>
> Now I am using Acrobat 9 and the "save as" does not add the trailer (at
> least to the files I am encountering at the moment).
>
> Looking at the PDF specification at
> http://www.adobe.com/devnet/acrobat/pdfs/PDF32000_2008.pdf (I hope this
> is the right location), I see at the end of section 7.5.8.1 the
> following:
>
> "The value following the startxref keyword shall be the offset of
> the cross-reference stream rather than the xrefkeyword. For files that
> use cross-reference streams entirely (that is, files that are not
> hybrid-reference files; see 7.5.8.4, "Compatibility with Applications
> That Do Not Support Compressed Reference Streams"), the keywords xref
> and trailer shall no longer be used. Therefore, with the exception of
> the startxref address %%EOFsegment and comments, a file may be entirely
> a sequence of objects."
>
> I am in no way a PDF expert, so I don't know whether this is apropos to
> this situation or not, but I am trying to do homework before asking for
> help :-)
>
> I can not supply the PDF I received, due to its confidential content.
> I have, however, edited it with Acrobat 9 to remove all the content I
> could see, then saved it ("save as") to a file called
> test-saved-from-acrobat-9.pdf, which I am attaching.
>
> So, does anyone know more about this, i.e. whether in this situation it
> really is legitimate that the trailer is omitted?
>
> And if so, is there a way to deal with this in iText? I am currently
> using iText 2.1.4.
>
>
> --
> Leonard Rosenthol
> PDF Standards Architect
> Adobe Systems Incorporated
>
>
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--
Leonard Rosenthol
PDF Standards Architect
Adobe Systems Incorporated
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