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To "prepare a proper paper" using an image (likely for a research paper, poster, or technical report), you should follow these professional standards for handling image files: 1. Image Quality and Resolution
Use Paint or the Photos app; open the file, select "Save As," and choose your preferred format.
If your submission requires a different format (like PDF or PNG for better edge clarity in diagrams):
For printing, ensure the image is 300 DPI (dots per inch). If it's a digital-only paper, 72–96 DPI is sufficient.