To efficiently output a preview image where a processing result is reflected based on processing contents.

A picture processor is provided with a first processing means which executes a first processing based on a first processing parameter in a color converting part 105 and outputs plural kinds of processed color component data in parallel, the second processing means which executes the second processing based on the second processing parameter successively inputting plural kinds of color component data so as to adopt them as YMCK data and successively outputs plural kinds of color component data where the second processing is executed and an output means which outputs the output of the first or the second processing means to a preview processing means 160 by an operating part 173.