How to change DPI count??

[29apr00]

I want to make a calender of some DISigns. kind of a count down until our trip next decemeber.

Every photo printing site i go to says they need to be a certain DPI. right now they are between 21-50, and they need to be 200. how can i make them bigger??

 

[Dom13]

Most photo editing software will do this. I know Photoshop Elements and Photo Impact can both do it. One problem that may arise is the quality of the image. If something is 20 DPI and is 12" long there are only 240 pixels in the entire image. Increasing the DPI to 200 DPI will make it 1.2" long when printed out. Are you sure the images are that low in DPI? That is a very odd size and any image would appear very blocky at that resolution. If it's coming from the 'net it is probably 72 DPI. As an example this smiley is 15 pixels across.