I have some image bigger than A4 (ISO format 8.27 × 11.7 inches) in 300 DPI. I want to reisze it to A4 format and set it to their original resolution (300 DPI).
Scale, resize, resizeWidthRatio always change the horizontal (and/or) vertical resolution, but no "real" image width or height
Is there a way to do it with Gd ?
For instance an A4 format image is 8.27 × 11.7 inches so at 300 DPI the image will have a size of 2481 × 3510 pixels, it always follow this equation:
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pixels = inches × resolution
That being said, there is nothing that prevents you from manually setting the resolution to 300 DPI after the resize operation by calling SetHorizontalResolution and SetVerticalResolution methods.
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