QL-Win / QL-Win/QuickLook

Inverted / wrong colors on some images

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Dominant language
C#
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Description

Describe the bug
Some images show a completely wrong / inverted color, while others render correctly.
I couldn't find a "why", some images are just a simple screenshot of a site and the colors are totally inverted for som reaso on the QL preview.

Windows
Windows 11 Home ARM edition.
Version 26H1
OS build 28000.2525
Experience Windows Feature Experience Pack 1000.26100.316.0

QuickLook Version: v4.5.0 from Microsoft Store

Example (right side is the correct one, on Windows Explorer Preview panel)

Image

I tried some of the XML settings like <UseColorProfile>True</UseColorProfile>, no difference.

I have the app on other 2 machines, x64 W11 and never noticed this.

Is this an issue with Windows ARM?

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the attached image-color issue on Windows 11 ARM in QuickLook v4.5.0, comparing its rendering with the Windows Explorer Preview panel. Investigate the rendering path and image color handling; done means affected images display correct colors while images that already render correctly remain unchanged.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
computer-graphics, desktop
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
45/100

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