Why do pictures' size get smaller when using microsoft paint?

When I open pictures using microsoft paint ( pictures i've taken using my digital camera ), and save those pictures without editing them and using the same extension, the pictures' size get smaller although they look the same and the dimensions are the same. For example, a 300 kb picture saved in ms paint could become 75 kb. Yet they look the same! why is that?

Actually, they arent the same, the color pallet was reduced in size to start with when the pic was loaded into paint, If you were to look real close, you would see the difference. To prove my point to myself, send me a blown up jpeg of your avatar! LOL! K here is the skinney, the palette was reduced in size the minute you loaded the pic in paint. Paint has no where near the color palette that most other image files have. A jpeg image for instance can have literally millions of colors. By reducing the palette colors, you reduce the file size of the pic. If you were to take the 2 images and blow them up and look closely, you would see that some of the pixels are no longer the same color, they will however be set to the closest possible palette color that paint can find.

in paint when you save it it turns in to a jpeg file..i believe

I dont know but your a hottie!!

I'm going to venture that it has nothing to do with the image quality or resolution or whatever because both of those appeared the same to me.

Checking out this question, I tried it with a pic I downloaded from a camera and noticed a significant difference in file size without image quality loss.

The *other* difference I noticed was in the File Properties. While the MS Paint-saved pic's properties were basically the dimensions, resolution and bit depth, the original camera image had that and other stuff such as camera model, exposure time, shutter speed, lens aperature, etc.

For an illustration of what I mean, please see the following; mind you, the two are otherwise identical to each other in terms of image: http://img265.imageshack.us/my.php?image...