How do you add an explorer thumbnail to a file, to show the contents inside the file?

Question

I want to add an explorer thumbnail to a file to show the contents inside the file. This is just like what PDFs, BMPs, PNGs, GIFs, and all the other image formats do. The thumbnail is to be shown in Windows Explorer when the files are under Thumbnails view.

Answer 1

Open windows explorer (right click on the start button and select Explore)
Click on Tools and select folder options.
Click on the file type tab. Wait for all file types to load.
Now find your file type.
There will be a button to allow you to make changes.
Click on this.
You can now change the icon.

Answer 2

it is achieveable that they are hidden. interior the folder, click on kit, Folder innovations and then click on View. decrease than Hidden information and Folders, verify the choice to teach Hidden. this might or won't be the reason in spite of the undeniable fact that it would not harm to attempt. desire it facilitates and strong success.