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User profile for user: AceSkyLight
AceSkyLight Author
User level: Level 1
14 points

Change background colour of Quick Look

I am currently working with lots of transparent .png files which only have black text and diagrams. When I open the file in Quick Look by using "SpaceBar" key, I have difficulty in reading the file as the background is very dark grey. I want to change the background of Quick Look to something lighter like white. I have been able to change the background in "Preview" but that does not allow me to cycle through the photos. Any ideas on how I can change the background colour to of Quick Look to white?

MacBook Air 13″, macOS 11.2

Posted on Jan 12, 2023 2:31 PM

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User profile for user: VikingOSX
VikingOSX
Community+ 2024
User level: Level 10
117,227 points

Posted on Jan 13, 2023 4:18 AM

The Quick Look background cannot be changed directly for images with transparency. However, there are some adaptations you can use to lighten the otherwise stygian transparency background of Quick Look.


  • Switch from a System Dark mode appearance to a Light mode which makes a big difference in the Quick Look transparency view.
  • Use lighter Desktop wallpaper to improve transparency viewing without invoking a document as a backlight.
  • Open a blank or low-text PDF and enlarge it as necessary, positioned where Quick Look will open the transparent image. This causes that light document background to shine through the transparency exposing black text that would otherwise be nearly invisible. Move the Quick Look window around to expose different areas of the transparency.


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User profile for user: VikingOSX
VikingOSX
Community+ 2024
User level: Level 10
117,227 points

Jan 13, 2023 4:18 AM in response to AceSkyLight

The Quick Look background cannot be changed directly for images with transparency. However, there are some adaptations you can use to lighten the otherwise stygian transparency background of Quick Look.


  • Switch from a System Dark mode appearance to a Light mode which makes a big difference in the Quick Look transparency view.
  • Use lighter Desktop wallpaper to improve transparency viewing without invoking a document as a backlight.
  • Open a blank or low-text PDF and enlarge it as necessary, positioned where Quick Look will open the transparent image. This causes that light document background to shine through the transparency exposing black text that would otherwise be nearly invisible. Move the Quick Look window around to expose different areas of the transparency.


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Change background colour of Quick Look

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