[Poppler-bugs] [Bug 103446] syntax errors reported on PDFs created by xsane

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103446

--- Comment #3 from Adrian Johnson <ajohnson at redneon.com> ---
(In reply to Larry Myerscough from comment #2)
> Is there an easy way (with poppler tooling?) to re-style my PDFs to use a
> more standard construction without changing the actual image part of the
> data. (I would prefer our official archive to contain unarguably valid PDFs
> with no bending of the standard.)

I tried running it through ghostscript:

$ pdf2ps African-Symphony-Baritone-C.pdf out.ps
$ ps2pdf out.ps out.pdf
$ pdfimages -list out.pdf
page   num  type   width height color comp bpc  enc interp  object ID x-ppi
y-ppi size ratio
--------------------------------------------------------------------------------------------
   1     0 image    4800  6959  gray    1   1  ccitt  no         8  0   600  
600  105K 2.6%
   2     1 image    4800  6959  gray    1   1  ccitt  no        14  0   600  
600 86.4K 2.1%

Not only has it converted it to a standard image, it has also encoded the
images with CCITT which gives better compression for 1 bpc images compared with
Flate.

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