How can you make a picture smaller?

My pictures are to big to use on twitter. How can I make them smaller when there already on my computer?

I scaned some picture and it became like 6000KB per picture and cant attach files because they are oversized.

Hey i have a really pretty picture on facebook that i want to be my profile picture! But there is a problem when i try to make it my profile picture my picture is so big all you see is half my face! How can you not crop the picture but make the whole...

I uploaded a picture into my 'mobile uploads' folder, and got a few likes and comments, now i want to make the picture my profile picture without losing the likes and comments. I realise if i do this by clicking 'make profile picture' then i will still...

how do you make a scanned picture on Microsoft word to a real picture that you can put it as your picture on your orkut let's say?

Okay, so whenever I make backgrounds, Twitter icons, videos though type of things it'll say for example "29KB" and whenever I make a Twitter icon sometimes it's file size is like 600KB and that takes FOREVER to upload. So is there any way I...

Hey , here the link to the picture i need to make smaller. http://i280.photobucket.com/albums/kk179… Its a gif. picture, and i dotn have the program to do it, so can you do it for me? Its an easy way to get best answer, just be the first to do...

i have a picture saved on my computer and its 556 x 453 pixels. i need it o be the same picture, without cropping it, but much smaller. the problem is, when i do this on paint, and change the attributes, it only take off from one side, whereas i want...

I volunteer for an organization and for one of our events we want to have a large banner with this picture on it. http://childrenshospitalblog.org/wp-content/uploads/2010/09/ChildCancerRibbonMagnet.jpg The problem is the picture is such low resolution...