In our computer, we can see different types of pictures and photos. In other words, we call it graphic files. You must have heard about jpeg, bmp etc.

All those pictures and photos have their own extension like below.
(*.jpeg, *.wmf, *.psd *.bmp *.eps *.gif *.tiff)
*.jpeg
*.wmf,
*.psd
*.bmp
*.eps
*.gif
*.tiff
If you want to check file/photos with jpeg extension (in jpeg format)
Then just type
Select search> then type *.jpeg
*.jpeg (* represent any files and .jpeg represents with jpeg extension)
You will see all the pictures and files with jpeg extension in your computer.
In the Internet also you can check all one by one.
Go to google> then type *.jpeg
Then you will see lots of pictures