Art & Design
A few examples of what you can ask Wolfram|Alpha about:
compare colors
specify a color using red-green-blue (RGB) values
add two or more colors
complementary color
convert a hexadecimal RGB color to HSL representation
apply a filter to an image
apply various effects to an image
apply a morphological operator to an image
detect features of an image
perform color processing
do document length calculations
specify a language
specify a document type
compute display characteristics from pixel count
specify pixel density
compare photo sizes
get unit conversions for a quantity
do a calculation with units
compare two quantities
compute field or angle of view
compute other parameters
get properties of a photo size
encode a string of digits as a barcode
generate a QR code
generate a barcode corresponding to an ISBN-10
estimate the number of objects required to cover a specified area
estimate the number of objects required to circle another object