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Author Topic: PDF: 300 dpi wanted, only 72 dpi  (Read 9276 times)

sebo

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PDF: 300 dpi wanted, only 72 dpi
« on: June 12, 2013, 07:16:36 pm »
Hey,

I searched the forum and Google for my problem but couldn't find a solution yet.

I am exporting a document as PDF. When I did this before (same computer, same scribus version), I got PDFs with 300 dpi.
However, I can't manage to this time, it always turns out as "Resolution: 72 x 72 dpi" (as ImageMagick's identify says). All pictures in the document have dpis > 1000.

Any suggestions?

Thanks!
Sebastian

GarryP

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Re: PDF: 300 dpi wanted, only 72 dpi
« Reply #1 on: June 12, 2013, 09:54:19 pm »
If the images in the PDF are at a resolution below that which you expected you can try checking the "Save as PDF..." Compression and Maximum Image Resolution settings.
You might have adjusted something by accident.

Boe

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Re: PDF: 300 dpi wanted, only 72 dpi
« Reply #2 on: March 29, 2014, 02:29:53 pm »
I have the same problem. I select File > Export > Save as PDF. All I have on the page is some text generated in Scribus and one jpg image which was 600 dpi when I got the image. When I go to export to PDF it creates a 72 dpi PDF. I want 300 dpi or more. I tried the suggested settings with compression such as 'None' ,  'Lossless - ZIP', etc. I also tried 'Embed as PDF & EPS files'. Every setting change I make still creates a 72 dpi PDF.

utnik

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Re: PDF: 300 dpi wanted, only 72 dpi
« Reply #3 on: March 29, 2014, 08:19:33 pm »
hi boe

what's the entry of the 'maximum image resolution' box in 'save as pdf'?
utnik

Boe

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Re: PDF: 300 dpi wanted, only 72 dpi
« Reply #4 on: March 30, 2014, 04:58:45 am »
Hi utnik,

'Maximum image resolution' is set at 300 dpi. I've tried it both ticked and unticked. That was the first thing I checked when I realised the dpi was defaulting to 72.

utnik

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Re: PDF: 300 dpi wanted, only 72 dpi
« Reply #5 on: March 30, 2014, 08:54:34 am »
could you upload a test file (.sla with image and .pdf) somewhere?

utnik

Boe

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Re: PDF: 300 dpi wanted, only 72 dpi
« Reply #6 on: March 30, 2014, 09:28:10 am »
I have been uploading the files to a site where they have an image wizard that tells you how many dpi the image is (its a tshirt manufacturer, so they provide an image wizard to check your image is the right size on the tshirt). According to every upload I do on this site, every change I make has resulted in a 72 dpi image.

utnik

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Re: PDF: 300 dpi wanted, only 72 dpi
« Reply #7 on: March 30, 2014, 09:37:52 am »
as long as you keep your files secret i'm not able to help!

a dummy file with an image would do, as long as it produces the same low resolution problem.

utnik

Boe

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Re: PDF: 300 dpi wanted, only 72 dpi
« Reply #8 on: March 30, 2014, 01:29:50 pm »
Sorry, you are talking with a complete beginner here, and I guess I did not take in the whole of what you said. I read "upload a test file" as yes, I have uploaded my files, and "somewhere" being, yes I have uploaded them to the tshirt manufacturer's site. I did not realise you wanted to scrutinize the files. What do you mean by "somewhere"?

BTW, I forgot to mention that when I export the files as images, whether as PNG or TIF, it creates the right resolution, i.e. I get a 300 dpi image. Does that help?

utnik

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Re: PDF: 300 dpi wanted, only 72 dpi
« Reply #9 on: March 30, 2014, 01:55:01 pm »
hi boe

What do you mean by "somewhere"?

if you have a dropbox account, it could be there – but almost every file hoster would do (like rapidShare, file-upload.net…)
if putting the link into this thread is too public for you, send a pm.

Quote
…when I export the files as images … it creates the right resolution … Does that help?

at least it tells me that the image resolution is ok.

utnik

Boe

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Re: PDF: 300 dpi wanted, only 72 dpi
« Reply #10 on: March 30, 2014, 02:58:26 pm »
Thank, utnik. PM sent.  :)

utnik

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Re: PDF: 300 dpi wanted, only 72 dpi
« Reply #11 on: March 30, 2014, 03:57:38 pm »
hi boe

i need the same image files you used.

your .sla file is searching for a fille called:
  • 'birdy2 yellow beak.jpg'.
i found the files:
  • hello.sla (the useful one)
  • hello-page001.png
  • hello.pdf
try the function: 'file' – 'collect for output'
btw. it's not scribus, its the  definitions por portable network graphics (.png) which doesn't support cmyk…

utnik


edit: i have extracted the image of the bird from your .pdf file. it is a 300ppi image in rgb! – where is this resolution problem now?
« Last Edit: March 30, 2014, 04:20:23 pm by utnik »

Boe

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Re: PDF: 300 dpi wanted, only 72 dpi
« Reply #12 on: April 07, 2014, 03:42:59 pm »
Do you mean ppi or dpi? I need 300 dpi. If you upload the PDF to this page, what is the dpi?
https://printaura.com/image-wizard/
« Last Edit: April 07, 2014, 03:57:44 pm by Boe »

Nermander

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Re: PDF: 300 dpi wanted, only 72 dpi
« Reply #13 on: April 07, 2014, 03:48:13 pm »
Well, the DPI can never be lower than the PPI.

During printing, each Pixel (as in PPI) is made up of one or more ink Dots (as in DPI).

Boe

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Re: PDF: 300 dpi wanted, only 72 dpi
« Reply #14 on: April 07, 2014, 04:00:04 pm »
Nermander, so 300 ppi can be made from a file smaller than 300 dpi? eg, 300 ppi can be a 72 dpi file?

 

palmate