From http://www.w3schools.com (Copyright Refsnes Data)

SVG Filters

SVG Filters is used to add special effects to shapes and text.

SVG Filters

The available filters in SVG are:

• feBlend
• feColorMatrix
• feComponentTransfer
• feComposite
• feConvolveMatrix
• feDiffuseLighting
• feDisplacementMap
• feFlood
• feGaussianBlur
• feImage
• feMerge
• feMorphology
• feOffset
• feSpecularLighting
• feTile
• feTurbulence
• feDistantLight
• fePointLight
• feSpotLight

You can use multiple filters on each SVG element!

From http://www.w3schools.com (Copyright Refsnes Data)