Blurry PDF Rendering in Preview

Discussion in 'macOS High Sierra (10.13)' started by CMT, Oct 2, 2017.

  1. CMT macrumors regular

    CMT

    Joined:
    Aug 24, 2009
    #1
    Since I updated to High Sierra reading PDFs on Preview is basically impossible. The program renders lines and fonts in a very blurry manner.

    I also found this reddit discussion:
    https://www.reddit.com/r/apple/comments/72lxjx/macos_high_sierra_blurry_pdfs_in_preview/

    Is anyone else experiencing it? I'm on a 2012 MacBook Pro.

    I downloaded 10.13.1 public beta with hopes of fixing but it did not happen. I'm really annoyed by this. Makes it unusable.

    As a comparison, here is the same PDF in Preview and Adobe Reader, side by side:

    [​IMG]
     
  2. Transgredi macrumors newbie

    Joined:
    Sep 28, 2017
    #2
  3. ashleykaryl, Oct 3, 2017
    Last edited: Oct 3, 2017

    ashleykaryl macrumors regular

    ashleykaryl

    Joined:
    Jul 22, 2011
    Location:
    UK
    #3
    I've seen this problem with previous versions of Preview and OS X as well, but it's back for me with High Sierra. I don't really want to have Adobe Reader on my computer but Preview clearly has rendering issues.
     
  4. CMT thread starter macrumors regular

    CMT

    Joined:
    Aug 24, 2009
    #4
    Thank you for your reply, Transgredi. And sorry for kind of duplicating your post. I searched but somehow missed it.

    Well, if it helps, I filled another bug report. Hopefully if they see more of these they will give this the attention that's necessary. I will keep you updated if they reply.
    --- Post Merged, Oct 5, 2017 ---
    That's my opinion as well, I just installed adobe reader to compare. But Preview on Sierra was perfect, has always been perfect.

    Yes, searching I found reports of this happening in previous systems as well. This is disgusting, and terrible. I'm deeply annoyed by the bad quality of this system overall.
     
  5. ashleykaryl macrumors regular

    ashleykaryl

    Joined:
    Jul 22, 2011
    Location:
    UK
    #5
    I'm inclined to think that Apple rushed out this update to meet an arbitrary deadline, rather than waiting until it was ready. I just see too many basic issues that should have been fixed. More optimistically, there is no reason why most of these glitches cannot be fixed over the next month or two.
     
  6. CMT thread starter macrumors regular

    CMT

    Joined:
    Aug 24, 2009
    #6
    Just a small update:

    Apple marked my bug report as duplicate. However, it's not a duplicate of the same Transgredi had. Mine says "DUPLICATE OF 32297343".

    They didn't post any reply, not sure if they will.
     
  7. inarush macrumors member

    inarush

    Joined:
    Sep 20, 2016
    Location:
    Ann Arbor MI
    #7
    I was just wondering if by any chance a fix (or workaround) has ever been found for this very annoying issue? It's been a while since it's been reported to Apple...
     
  8. Infrared macrumors 68000

    Infrared

    Joined:
    Mar 28, 2007
    #8
    The kerning also seems questionable:

    Preview (OS X):

    Screen Shot 2018-05-22 at 10.50.49.png

    Foxit Reader (Ubuntu Virtual Machine):

    Screen Shot 2018-05-22 at 10.57.21.png

    Note the spacing between "y" and "t".
     
  9. Infrared, Jul 6, 2018
    Last edited: Jul 6, 2018

    Infrared macrumors 68000

    Infrared

    Joined:
    Mar 28, 2007
    #9
    Is this issue related to non-retina displays in particular?

    [EDIT] Here's another example:

    Screen Shot 2018-07-06 at 11.34.50.png
    Two consecutive lines in the viewed document begin with the same word. The rendering of the two instances is markedly different.

    For comparison:

    [​IMG]
     
  10. w4z macrumors newbie

    w4z

    Joined:
    Jun 17, 2018
    #10
    i wrote a post a while ago, but nobody interested.

    https://forums.macrumors.com/threads/macos-pdf-issues.2123611/

    test pdf; https://www.dropbox.com/s/ucv0i2gpcdlq7ah/macos_test_pdf.pdf?dl=1

    i created a pdf file for testing. you can compare that with preview and acrobat reader, acrobat reader has no differences between converted and unconverted text but if you open in preview unconverted text looks bolder ( in sierra too )

    i think its not just related to high sierra, i found similar issues on el capitan on my search

    they changed pdfkit and anti-aliasing system, this caused too many issues. Also my pdf pages loading slower than sierra, images and backgrounds loading piece by piece like slow loading web page
     
  11. Infrared macrumors 68000

    Infrared

    Joined:
    Mar 28, 2007
    #11
    Thanks for your comment, w4z.

    After posting yesterday I checked some PDF documents on an iPhone 5S. I found that the same or a similar rendering issue is present there, but it seems to particularly affect small text. On the 5S this text is too small to be read (it really is tiny) and the issues with rendering can only be properly seen after a screenshot is magnified. For text that is presented at a size that is normally legible, the rendering seems to be acceptable.
     
  12. epetrovski macrumors newbie

    epetrovski

    Joined:
    Aug 29, 2017
    Location:
    Copenhagen, Denmark

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