Hi,
Could you upload the image that you got? Here's my first page:
Tilman
Am 02.08.2022 um 18:09 schrieb Daniel Earwicker:
Cool, thanks - that has made it crop the pages as expected but the colour is
still as before. I tried specifying each of the documented color depths with
the -color option and none of them resulted in the expected/normal appearance
of the test PDF. (Also how would I know which option to pass for a random PDF?)
Is there anything I can do to get an image automatically rendered how it is
intended to look, in the same way that Ghostscript can? (I just tried gs with
the same tests pdf and it renders it essentially the same as the Chrome viewer).
-----Original Message-----
From:sahy...@fileaffairs.de <sahy...@fileaffairs.de>
Sent: 02 August 2022 16:36
To:users@pdfbox.apache.org
Subject: Re: ExtractImages command test - images appear different
Hi Daniel,
the command you are using extracts images contaoined in the PDF but doesn't
render the PDF into an Image.
Usehttps://pdfbox.apache.org/2.0/commandline.html#pdftoimage
BR
Maruan
Am Dienstag, dem 02.08.2022 um 15:31 +0000 schrieb Daniel Earwicker:
Hi, this project looks perfect for my needs - converting PDF pages
into images for easy rendering elsewhere. This is very much my first
try so apologies in advance if this is a stupid question, but in the
docs athttps://pdfbox.apache.org/2.0/commandline.html I can't see any
options that might improve the output.
Here's a side-by-side comparison, ExtractImages output on the left,
and the PDF opened in chrome on the right:
https://imgur.com/a/KgNAZQ2
The PDF is an example I got from:
https://www.ets.org/Media/Tests/GRE/pdf/gre_research_validity_data.pdf
Just in case this is relevant, I ran it a clean debian container:
docker run -it -v c:/Users/me:/external debian:bullseye-slim
apt update
apt install openjdk-17-jre -y
apt install wget -y
wgethttps://dlcdn.apache.org/pdfbox/2.0.26/pdfbox-app-2.0.26.jar
and then tested with:
java -jar pdfbox-app-2.0.26.jar ExtractImages -prefix
/external/extract-test /external/gre_research_validity_data.pdf
The screenshot is of the resulting extract-test-2.jpg file.
There's obviously some problem with the colours, and also there's a
lot of extra stuff in the page margins that Chrome somehow knows it
ought to hide. Is there any way to configure this extraction process
so the image to look like how Chrome displays it? And for this kind of
accurate rendering to work for the majority of PDFs? (this being the
first one I tried). Thanks!
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