★ Filters in SVG are used to add special effects to shapes, images and text.

★ There are several parameters in SVG filters.

★ Certain filters are used for drawing objects.

★ Filter Tools allow Javascript / PHP to choose pictures on local disk and modify the images.

★ Certain filters are feColorMatrix, feComponentTransfer,feComposite,feGaussianBlur etc.

★ The filter primitives feSpecularLIghting and feDiffuseLighting are used with feComposite for creating lighted drawing.

★ The filter primitives feImage, feFlood and feOffset are used for creating input for other filters.

★ To create cloud patterns, feTurbulence with feColorMatrix is used.

★ The filters feGaussianBlur, feOffset, feSpecularLIghting and feComposite are used for creating 3D light effect.