1. Vignette is a picture that smoothly fades into the background.
2. Open Photoshop. Press D to select white as a background color.
3. Open an image to apply simple Vignette effect.
4. Select Elliptical Marquee tool. Place the cursor in the center of an image and draw the circle pressing Shift + Alt
5. Select > Feather (9)
6. Select > Inverse
7. Press Delete and you get a Vignette. Press Ctrl + D to deselect.