Border Size Color border

Draws a border around the image, in the width and color defined. The border will overlap the image rather than altering its size.

The default is no border, and the width and color values must be specified as a comma-separated list with the width first. Valid color values are a color keyword or 3- (RGB), 4- (ARGB) 6- (RRGGBB) or 8-digit (AARRGGBB) hexadecimal values. The "A" in a 4- or 8-digit hex value represents the color's alpha transparency. The default is transparent white, 0FFF.

To round the corners on a bordered image, use the border-radius and border-inner-radius parameters in addition to border.

See the API specification for more information about this parameter's value ranges and format.