I have set up a cool image as my Desktop picture and that precious file is accidentally deleted. And I will be really confused if someone came and asked me to send that image file I used as Desktop picture.

I spent my precious two-hours time digging through folders to find where the file is saved inside my Mac and ended up in vain. But then I realized, I can use one trick to recover that deleted Desktop picture. Here is how the trick works:

1. Open System Preferences
2. Choose Desktop & Screen Saver and then go under Desktop section
3. Simply drag out the Desktop picture thumbnail and you will get the copy of that picture file. It works like a charm

For additional illustration, I have embedded the video tutorial for this trick.