Resize for _Print

[TheTog]

I have an old photo which will now be published in a small local magazine. I don't have much experience with prints... I could use some help here:

They asked me in the format:

21.5 cm x 28 cm (something like 8.5 x 11 inches by approximation).

I have the following now:

Width: 15.85 cm
Height: 23.78 cm
Resolution: 600 pixels/inch

I need to increase Width to reach a minimum of 21,5 cm.

How can I achieve this without causing any damage to image quality?

Thanks

[DJSoulglo]

Re: Resize for _Print

They wont print it at 600 dpi. Printready files are usually at 300 DPI. So just resize the image (change 600 -> 300) and the size should jump up. Hence you'll have enough size there.

If not, you can kind of safely upsize images to about 140%, so even that way you're good.

Good luck.