1. An image compressing device comprising: at least one memory including computer readable instructions; and at least one processor configured to execute the computer readable instructions to, create a histogram regarding an input image, recognize an original type of the input image using the histogram, and perform an image compression process for creating a high-compressed image file from the input image by, performing gradation correction on the input image based on the original type, separating the input image, after the gradation correction, into a line drawing area and another area, performing a first compression process on the line drawing area, and performing a second compression process on the another area, the second compression process being different from the first compression process.