I can't seem to find an alternative to File Explorer that lets you set a custom image for folders, so I have had to manually create folder.jpg thumbnails. The annoying part is when I hit save, Photoshop won't default to the directory that the image I am editing is in, but the last directory I had saved to.
Is it possible to make a script that automatically saves an image as "folder.jpg" in the same directory that the original occupies?
Have you look at Photoshop's script Image Processor? Menu File>Scripts>Image Processor. Even better there is a Plug-in script you can dowmload and install from the Web. Image Processor Pro, One installed you will find it in meny File>Automate>Image Processor Pro...
There are Photoshop scripts that can build Web Photo galleries. Where Thumbnails. Web size Jpeg files and Html will all be generated