,
The original image with no manipulation style: filter=blur(...px)
Blur

Grayscale
Sepia is a color named a pigment derived from the ink of the common cuttlefish. Sepia Invert Saturate
CSS Filters

Images can be manipulated trivially in CSS without any external libraries by just using the features of the standard css filter property.

Offline images

The following bash script provide functions for converting images on the command line.