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Question
I'm exporting Indesign CS2 images to a PDF file. ALL images linked are 300 bpi
per Phogoshop CS2 and Bridge; however, a few of the images are showing up in
the PDF file lower bpi than 300 -- why? What am I possibly missing in the
conversion?
Hi Ellen, thanks for the question.
I'm a little confused on what you're calling "bpi." I'm familiar with ppi (pixels per inch), dpi (dots per inch) and lpi (lines per inch) but haven't come across bpi. So let's say we're both talking about a raster object's resolution. Here are some problems you might be having. First, when you import the images into InDesign, if you make them bigger, you're decreasing the Effective ppi of the image even though the Actual ppi doesn't change. You can check the image's Actual and Effective ppi by choosing Info under the Window menu. The Actual is the ppi you get in Bridge or Photoshop and the Effective is how it will output after you've scaled it in InDesign.
Another problem you could be having is in the Exporting process. I recommend always using the PDF/X-1a:2001 preset when exporting a document for print. Once selecting this preset from the list, choose the Compression tab on the left side and you'll see that it will downsample (or leave) your images at a nice 300 ppi.
I hope this helps. If it doesn't work, let me know and we can try something else. Good luck!
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| Rating(1-10) | Knowledgeability = 10 | Clarity of Response = 10 | Politeness = 10 |
| Comment | Thank you, thank you, thank you! Scott Pro. The answer was easily uderstood. You gave me two options and it so happened that both options were needed. I now have a preflight showing all the images on the pdf is equal to or greater than 300 (not much greater). . . ready to upload to the publisher. So happy! The bpi bit either comes from being old as in bytes per inch -- or dyslexia, an upside down p; whichever, at my age I'd rather blame it on the "d" word. thanks, again. | ||
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As a professional graphic designer, I use Adobe InDesign every day and can answer all of your InDesign-related questions. I will give you easy-to-understand and precise answers, along with many tips and tricks to save you time while working on every project. I have spent years helping beginners learn InDesign, as well as helping professionals master the many features of the world's most powerful page-layout software. Thank-you for your submissions. Please include your operating system (e.g., Mac OS X 10.5.x) and InDesign version (e.g., InDesign CS4) with your questions. Thanks!
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