Although Windows 11 and Windows 10 show the default SVG opening app, you can show the SVG thumbnails in File Explorer using this tutorial.

You can change the Image Thumbnail size using Registry Editor or Explorer Ribbon in Windows 11/10. We show you how to make them bigger or smaller.

On Windows 11, you can disable thumbnail previews for files and folders on File Explorer if they’re not working correctly, or you don’t want to use the feature, and you can do this through ...

I've done a lot of googling around already but found no reliable method to generate thumbnail previews for video files of certain types. .flv, .mkv, .mp4(i think) there's more. I know that windows ...