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Modify JPEG resolution

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I have a JPEG that is 120x120 px. I need it larger. How do I do that?

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You can change the resolution for the JPEG file with practically any image editor, but it will reduce the quality. For example, you can resize a big image to a small resolution and keep the quality, but it's impossible to do it backwards.

To change the resolution, download and install XnView (http://xnview.software.informer.com/ ), then right click your picture and choose Open With. Select XnView, then go to Image > Resize and input the desired resolution.

Use this image as guidance:

enter image description here

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