Why thumbnails are displayed differently?

[slishnevsky]

Hi, on the following screenshot I have a folder with images, all the same square size 512x512

Why are they not displayed as squares of the same size in thumbnail preview? See the screenshot.

I tried to refresh thumbnail cache, reload thumbnails, no result.

Image: https://i.imgur.com/qiSc29S.png

[ghisler(Author)]

Total Commander uses various ways to extract thumbnails, via various Lister plugins, and via Explorer extensions. It's possible that one of the methods cannot recognize one of the images, e.g. because it contains extra data. Then the next method will be used, which may extract the image in a different way. If you use Lister plugins, you can find out which one extracted an image by adding the line
DebugIconThread=3
to the file wincmd.ini under the line [configuration] .

This creates a file named tcicolog.txt in the TEMP directory.

Warning: This option causes a significant slowdown, so please remove it after finishing your tests.

[slishnevsky]

Thank you! I will give it a try.