PDF Image Quality 77 Responses

Last post: 2 years ago | Thread started: Jan 12, 10, 7:54 a.m.

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• seed

  How do you create a PDF from image files and not have it look blurry? I am using good quality png files and they come out looking like blurry jpgs at any zoom level.

  Jan 12, 10, 7:54 a.m. – Permalink

• baseline_shift

  are you creating them in Idd?

  • cause its the export settings, not the file types in the doc that effect the outcome of the pdf.– baseline_shift

  

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  Dog-earJan 12, 10, 7:56 a.m. – Permalink

• seed

  No in Acrobat Pro. I have InDesign but never use it. Is there a decent way in Acrobat though?

  • I'm just merging some UI screens into one file.– seed1/3

    tough to say. the best bet would be to crate a doc in ID with those screens, and export a pdf at whatever level you require.– baseline_shift2/3

    level you require .– baseline_shift3/3

  

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  Dog-earJan 12, 10, 7:57 a.m. – Permalink

• seed

  Thanks for the info. So there's a setting in Acrobat - Convert to PDF. under PNG there are it's own settings where it is defaulted to JPG Medium. There are only JPG options but Maximum is obviously better.

  

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  Dog-earJan 12, 10, 8:16 a.m. – Permalink

• seed

  Can you control the scaling in InDesign better? No matter what the PDF quality I always feel like they are blurred or not scaled right even at 100%.

  • On mine 100% is blown up and 65% is about right - and sharp.– seed1/2

    Unfortunately other people have different settings and even screen DPIs in Acrobat and Reader.– monospaced2/2

  

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  Dog-earJan 12, 10, 8:17 a.m. – Permalink

• monospaced

  The PDF will always be scaled, unfortunately, and Adobe Reader/Acrobat doesn't have the best image scaler. The best you can do is use InDesign and output a higher quality/higher resolution PDF. I don't use Acrobat to create PDFs that often, but there must be a way to not compress the images. If you start with high resolution pngs, as you claim, and don't compress them, then the PDF should be close to the original.

  

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  Dog-earJan 12, 10, 8:20 a.m. – Permalink

• seed

  Its weird 100% is 'actual' size but it's really blown up. It actually looks sharp and normal size around 60%. I guess it may just be like you said it's not the best image scaler'. I always seem to have to resize PDFs to something that is more legible and it's usually not 100%.

  I'll have to try InDesign. If anyone has a quallity PDF portfolio for an example please post it.

  • That's because Acrobat defaults at 96dpi and most screen images are 72dpi. It's very f'd up.– monospaced

  

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  Dog-earJan 12, 10, 8:42 a.m. – Permalink

• elahon

  Are you using screenshots? You mentioned "UI screens ". Screenshots are always going to be low-res to begin with, 72 DPI. No real way around it. I ran into this a while back and I needed some high-res versions, so I ended up re-creating what I needed in PS and using those.

  • They are from PS but Saved for Web.– seed

  

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  Dog-earJan 12, 10, 8:53 a.m. – Permalink