Estimates only
Quality labels describe pixel density on paper, not optical sharpness, colour accuracy, or a printer’s output. A file that this site marks “excellent” can still look poor if it is out of focus, noisy, or badly profiled. A file marked “fair” can look fine on canvas across a room.
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Print-on-demand DPI notes are typical planning figures, not a live copy of any catalog. Always follow the template and file checker of the company that will print the work.
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Read the methodology before relying on a number, and the terms for the legal frame.