First I used paint (just drawing a brown circle over the face), recently I found this website http://www.lunapic.com/editor/?action=face-blur which allows to blur faces, but still to coarsely pixelated. The first thing I notice in the picture below (from lunapic) is that the face is pixelated, but I want it to be the last thing the viewer notices, when he looks at the face to see if he recognizes it.
Do you know a webpage that does this for free? I don't want to pay or download a program.
Pixelation is too coarse:
