ClippingMagic – This online website provide a professional image editing tools (like Photoshop) but Free!
You can upload or drag your image to website. then you the tools it’s provided. System help you remove the background of your image. That is pretty awesome!
Like the dog’s image above, the red line means “erase”. On the other hand, green line/dots means “masks”.
Application for Education
I really like this service when it’s free on this stage. Because it’s in “alpha” stage, after that, it might need some bugs.