XnView Software

XnViewMP 1.8.3 64bit
Windows11 (24H2), display resolution 3840x2160, win scaling 150%

Settings - thumbnails - overlay icon
Overlay icons have 2 native sizes (12px and 24px) at which they look crisp and pixel perfect at 2 windows scales (100% and 200%).
However, at intermediate scales, readability is reduced due to interpolation. Smaller sizes are more susceptible to this problem than larger sizes.

Suggestion

• size
  
  • add more sizes for overlay icons to avoid interpolation at small sizes (approach similar to file type icons)
    eg 15px, 18px and 21px

    

    example_info_dark_12_15_18_21_24.png (16.8 KiB) Viewed 667 times

    example_info_dark_12_15_18_21_24.zip

    (13.89 KiB) Downloaded 24 times

  • allow user to change icons size
    in Settings>Thumbnail>Overlay icons
    eg 12, 15, 18, 21, 24, etc and maybe in between with interpolation

• format
  
  • use .svg icons
    to programmatically adjust the color of icons to match the theme and style (dark/light)

ref
Icon Design: Sizing
Icon Design: Anti-Aliasing
Minimum set of assets to cover all screen sizes, densities, and orientations on Android




Related

• suggestions
  App UI - icon - file type - add more sizes to avoid interpolation
  Settings - thumbnails - overlay icon - add more sizes to avoid interpolation (current post)
  Settings - thumbnails - overlay icon - add custom spacing
  Settings - thumbnails - overlay icon - add custom positioning
  Browser - thumbnails - overlay icon - split top row icons
  Overlay icons cosmetic update