How to "down sample" an jpeg file?
Posted: 2011-07-13T02:25:40-07:00
I would like to change the resolution of a jpeg file, but keep the physical dimension the same, for example:
- original file: 800dpi, 4000x4000pix, 5"x5"
- converted file: 400dpi, 2000x2000, 5"x5"
How can I do this? Can someone pls show me how to do this using command line?
- original file: 800dpi, 4000x4000pix, 5"x5"
- converted file: 400dpi, 2000x2000, 5"x5"
How can I do this? Can someone pls show me how to do this using command line?