[reportlab-users] Generate a Jpeg image from a PDF File done by reportlab

Carl Karsten carl at personnelware.com
Wed Dec 2 11:31:17 EST 2009

On Wed, Dec 2, 2009 at 10:07 AM, Dani Reguera <drbakhache at gmail.com> wrote:

> Hi everybody,


> I have a problem with a pdf file generated with reportlab, maybe anyone

> could help me. I have generated a file in reportlab, and now I want to make

> a thumbnail image, the format doesn't  matter (png or jpeg) and I'm trying

> with ghostscript (GS) and ImageMagick, but the problem is that GS tells me

> that it's and error. Seems that the pdf generated by reportlab is

> corrupted... could be that the pdf format is PDF-1.3?


> Is in reportlab a way to generate a jpg image or export apdf file to a jpg

> image?


> Any suggestion or help will be appreciated.


it is easier if you create files, but here is how I do it all in memory:

# get pdf
pdf = mkpdf(ds,sample=True)

# render pdf onto pixbuf
pixbuf = Pixbuf(COLORSPACE_RGB,False,8,286,225)
doc = poppler.document_new_from_data(pdf,len(pdf),password='')

# save pixbuf as png
# There has to be a better way to get the image?
pixbuf.save_to_callback(lambda b,l: l.append(b), 'png', user_data=lst)

return png


Works, but that .join() bothers me. I think it is because I feel like
I am using string/char functions on bytes. which are the same thing,
mostly.. but... I have issues.

Carl K

More information about the reportlab-users mailing list