Folder icon and logo image resolutions are as follows:
■ Folder Icon
- Vertical: 128px
- Horizontal: 128px
※ Cut into a square from the center and resize
※ Displayed as 40px × 40px
■ Folder Logo
- Vertical: Max. 98px
※ Resize maintaining the same aspect ratio (width-to-height ratio)
※ Displayed as 24px in height
Refer to the following for details:
The images of Group / Folder icon and logo.
https://teachme.jp/8/manuals/4965824