In you Image Editing Software (Photoshop / CorelPAINT / PIcture Studio / MS Paint) there should be a resize, or resample, option.
Set the pixel size to fit within the range that BillyTV just gave you above.
It may look HORRIBLE depending on many things - but that is how you'd do it.
(it might look SPLENDID as well, and I hope it does!
Welcome and good luck!
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