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  • Tom Gewecke Level 9 (77,185 points)

    thedvguy wrote:


    opening in Preview and saving as a JPEG



    With an app like GraphicConverter you can set the resolution to whatever you want when you open and convert your pdf to a graphic format.   Whether that will accomplish what you think you need to do I don't know.

  • thedvguy Level 1 (0 points)

    that was actually quite simple and straightforward

    the image resolution is determined by imported or placed images


    no, your advice is good as far as saving as tiff, except that we are using email and the detail loss is seriously unnoticable. we put out a glossy magazine that looks really good and I've been using jpegs for a the last four years. tiffs are just too large. if we were working in the same office, it would be great advice. but, working from afar, this is the easiest way to go.


    PDF is too large to send, as are TIFFs. as far as 150, that is what I'm trying to avoid. it's not what I'm trying to do. I'm trying to create a 300 DPI jpeg. for some reason, that seems to be impossible.


    I used to use InDesign and Photoshop and all of this was very simple. this new computer doesn't have any Adobe products so, I'm using the Apple products. amazingly, I'm able to recreate the ads just as they looked in InDesign, with a bit of fenagleing. but, getting the final hi res jpeg has proven to be a challenge.

  • thedvguy Level 1 (0 points)

    downloading GraphicConverter now.



    here's the magazine

  • Walt K Level 4 (2,905 points)

    Maybe this will give you what you want. Open the JPEG in preview and in the Tools menu select Adjust Size… and in the Resolution pane change 150 to 300 and click OK


    Picture 3.png

    Picture 4.png



  • Jeff Shenk Level 4 (2,737 points)

    Respectfully, you are the one complicating things. Pdfs don't have a dpi setting unless they have images in them. Text and shapes are vector quantities which are resolution independent.


    I see from one of your later posts that you don't even want a pdf; apparently you want a jpg (even though the pdf should probably be much smaller than the jpg). So I guess at this point you are talking about the dpi resolution you get when you use Preview to convert the vector pdf from Pages to a bitmap jpg. That has nothing to do with Pages, though.

  • thedvguy Level 1 (0 points)

    YES! Adjust size works fiine

    I was hoping to get something that would interpolate the image so I wouldn't lose to much quality

    but, this does work

    also, I downloaded GraphicConverter which may help me keep the quality up

    but, Preview is free, and that's always nice


    Jeff, you are missing some points

    the ad is created in Apple Pages

    I can export as a PDF

    I cannot export as a JPEG

    otherwise, I wouldn't need the intermediary step

    I need a JPEG at 300 DPI of a document created in Pages

    can you uncomplicate that for me?

  • fruhulda Level 6 (15,120 points)

    You will not loose image resolution if it is 300 dpi when you import it to Pages. As said before don't you transparency or shadows as it will only show in 72 dpi. The application Preview can change the pdf to a jpg as Walt states.

  • Jeff Shenk Level 4 (2,737 points)

    If all the images in your Pages document are 300 dpi, the pdf output from Pages will be at 300 dpi. There is nothing complicated to this point, and that is what you originally asked about.


    The complication arises because you feel a need to convert the pdf to jpg. (I don't understand why, since the pdf should be a smaller file and all the vector elements in it will be of much better quality than in a jpg, but if that's what you need, fine.) Several solutions for doing this have been mentioned by other posters.

  • Henrik Holmegaard Level 3 (575 points)

    > I'm trying to create a 300 DPI jpeg.


    If you convert type (vector objects), tone and tint boxes (vector objects), and photographic images (raster objects) into 300DPI JPEG the application is likely to apply the following implicit logic unless you take actions yourself to explicitly declare what you intend -


    1. There is one and only one colourant format possible, so probably all objects should get converted to RGB by default.


    2. There is one and only one colourimetry space possible, so probably all should get converted to Generic RGB Profile by default (unless you assign another ICC profile in the UI of the conversion software).


    3. You would probably want to check how transparencies are flattened / rendered in your chosen process.


    Try saving out your JPEG 300DPI from the converter of your choice, open in Apple Preview, and check the resolution and the ICC profile in the Get Info dialogue. Preview will provide this information for raster files (e.g. JPEG), but not for mixed raster and vector files (e.g. PDF).



  • thedvguy Level 1 (0 points)

    I think we're getting complicated again


    people send their head shots at many different resolutions. I'll be checking their res before importing from now on and change the resolution, if necessary, in Preview.


    I do use shadows. they are necessary to the style of the ad. it has never affected the outcome befofe.


    I've been using Preview to convert to JPEG for quite some time. it's only recently that I've tried to change the resolution and didn't know there was a way in Preview. I know how to do that now, thanks to Jeff.


    Jeff, you don't have to understand. it's what I need and I've been doing it for years. the PDFs do seem to get larger when you have many layers. the JPEG flatens those layers


    we always go to RGB because we started as an online only magazine. the ONLY question was resolution. that was it. the printer converts to CMYK and it comes out fine.


    the question was answered and I have a game plan for the next issue. thank you all for your input. I never expected to get so much help. I really appreciate it

  • Henrik Holmegaard Level 3 (575 points)

    > people send their head shots at many different resolutions. I'll be checking their res before importing from now on and change the resolution, if necessary, in Preview.


    Not quite: If Henrik were to send you a photograph in 72DPI, you would have to ask Henrik to send you the same photograph in 300DPI. Apple Preview can't add the detail that was cut away, so changing the resolution from 72DPI to 300DPI won't help. Principle of GIGO Garbage In, Garbage Out.


    > the PDFs do seem to get larger when you have many layers. the JPEG flatens those layers


    Not quite: The better way to do what you want is to send PDF 1.4 with live transparency and no layers or PDF 1.3 with flattened / rendered transparency and no layers from Pages / OS X. If your printer prefers JPEG, it sounds like it's a workaround to stop you posting unprintable page descriptions.


    > we always go to RGB because we started as an online only magazine. the ONLY question was resolution. that was it. the printer converts to CMYK and it comes out fine.


    There is a HUGE difference in the colour gamut of RGB captures, and indeed there is also a HUGE difference in the colour gamut of CMYK conversions. The colour gamut is not defined by the colourants, it's defined by the ICC profile cf the gamut comparison window in the ColorSync Utility.


    There are various authors you might want to try reading. I believe some of Mattias Nyman's writing has been translated from Swedish into English. He won the Benjamin Franklin award for his first book on colour separation basics.



  • Walt K Level 4 (2,905 points)

    Picture 5.png


  • thedvguy Level 1 (0 points)

    Henrick, it all sounds good and I've heard it all before. when you can show me how horrible my magazine is, then I'll listen. but, when it has been coming out fine for over four years, I have no problem continuing with my methods. I am a filmmaker and do this on the side. I don't really have time to be reading a bunch of stuff on something that doesn't really interest me. you're complicating it again. my simple methods work.


    I really thought we were done with this.


    I udnerstand the resolution thing, which is why I mentioned getting something that would interpolate, like photozoom, instead of using Preview. I'll be doing tests before the next issue to see what I need to do. I think photozoom is about $200. so, if I can get away with doing the free thing, I will. and if they have a 300 DPI image, I will definitely get that from them, which they really should have. we're talking about the Stand-Up Live comedy ad, and these are professionals. they should have hi res photos on hand.


    usually we're trying to do things really fast because they send us stuff so late. such is the magazine business.


    again, I really appreciate your help and input. I've been in photography, graphic design, printing and video for many years. worked for quickprint shops, book manufacturers and commercial shops after high school. I really do understand the resolution thing. I know things can get fuzzy or pixelated pretty quickly. and we do NOT llike that. so, like I said, I'll be doing some tests and see what I can get away with. but, we do put out a quality magazine. we won't be printing anything that doesn't measure up. there have been times that I sent something that wasn't quite there and our graphic designer sent it back. the printer will never see anything that won't look good in print.


    also, I know about color gamut. but, somehow, it always looks great. and we've used different printers. only two in four years. but, things came out great at both places.


    one more time, THANKS for all the time you put into answering my question. I think I've got it

  • fruhulda Level 6 (15,120 points)

    You could ask Alexander who have this blog  and is publishing magazines too.

  • thedvguy Level 1 (0 points)


    Great resource