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Pixels, resolution, and file size

Compare one image at different pixel grids and color depths.

    CS07 · Pixels, resolution, and file size0.00 s · Ready

    Computing · Data representation / Principles and exploration

    Pixels, resolution, and file size experiment guide

    Compare one image at different pixel grids and color depths.

    How does it work?

    Raw size is proportional to pixel count and bit depth.

    Key relationship

    bytes = width × height × depth / 8

    Try this investigation

    1. Compare one image at different pixel grids and color depths.
    2. Run and record each of the three reference settings.
    3. Change one variable and compare with the reference records.

    Interpreting your results

    What does greater depth change at fixed resolution?

    More color levels · Raw size is proportional to pixel count and bit depth.

    Assumptions and limitations

    Raw grayscale size excludes headers, row padding, and compression. At 24 bits, RGB channels share a gray value.