Crop Portrait to Exact Square

I have a single photo that just needs a precise, professional crop. Please trim it down to exactly 250 px × 250 px, making sure the subject’s head and shoulders sit comfortably in the frame without feeling cramped or off-center. No color, brightness, or contrast tweaks are required, and I want to keep the original background exactly as it is. When you’re done, deliver the final image as a high-quality JPEG. Deliverable: one 250×250 px JPEG file with the composition focused on head and shoulders, background intact, and no noticeable loss of image clarity.