Is there any way to remove the rounded corners of the image preview in Quick Look? Maybe some hidden preference?

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I have to preview large amount of small images (assets for the applications I develop), and these rounded corners interfere a lot. For example compare the QuickLooked (left) with the actual image (right).

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  • I think not. Try some photo viewing apps.
    – Gilby
    Apr 11 at 6:33
  • 1
    I don't think so unfortunately, but you can use full-screen quicklook without the rounded corners... You just need to press Option+Command+y
    – AVelj
    Apr 11 at 8:32
  • Those images must be really small. Another option would be to use the qlmanage command-line tool to generate thumbnails.
    – red_menace
    Apr 12 at 23:23

1 Answer 1


Someone else had this problem, and did quite a bit of reverse engineering to fix Apple's incompetence.

You can find the script here: https://github.com/rogual/fix-quicklook

Full warning, this involves disabling SIP and essentially modifying the code of a running process. I'd strongly recommend reading through the script before running it.

If you can, I'd highly suggest you send feedback to Apple encouraging them to add a setting to enable or disable this "feature"

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