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I have an odd smoothing issue with Preview in MacOS Sierra 10.12.6 on my retina MBP. Every right-hand (odd-numbered) page is very blurry, almost unreadable, while the left hand pages are somewhat blurry, but not quite as badly so (see screen capture below).

This happened suddenly, in the middle of a work session, there were no problems just moments before the issue suddenly occurred. I do not see similar blurriness on other viewers (Acrobat, Skim). The blur occurs both on the built-in retina screen and on my 1920x1200 monitor.

I decided to turn off font smoothing, but that option is now gone from the Settings window (when did this happen?)

What can be causing this weird behaviour?

enter image description here

Update: The smoothing issue persisted through several reboots, but has now disappeared.

  • 2
    Not to be an Apple naysayer, but I feel like Preview has become increasingly buggy recently (High Sierra even moreso, but not relevant here.) This occurs for all documents, correct? – JMY1000 Jan 5 '18 at 9:50
  • Yes, at least for the few that I've tried. – DNF Jan 5 '18 at 9:52
  • Weird, it almost looks like the right half just isn't scaled properly to the display. – JMY1000 Jan 5 '18 at 9:53
  • Yes, it almost looks worse than just a smoothing thing. – DNF Jan 5 '18 at 9:55
  • Have you tried viewing it in single page mode? – jmh Jan 10 '18 at 19:52

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