Almost all PNG images are 48x48, though. Only a few that I recently made (mostly compounds done by fen2.php) are 50x50. I produced many of the SVG from which these are derived, but I think Greg had a script that he used to 'bulk convert' the SVG to PNG. He must have used 48x48 in this script. Why he picked that size is unclear to me, as amongst the GIF images it is virtually non-existent.
Maybe he was considering that Game Courier highlights spaces with image borders and wanted to leave some space for the border. However, the borders used are larger than one pixel in width, and the Square Table method will now keep borders from growing too large by reducing the dimensions of the image, whereas the CSS method puts borders around an empty space of a fixed size. So, even if making the images smaller than 50x50 once had some utility, it no longer does.
Should I try to re-render all the alfaeriePNG at 50x50? I suppose I could make my own script for that, at least for everything that we have as SVG, and not compound or post-edited (to apply crosses and such).
Since Game Courier is able to copy an SVG to a GD image that will be saved as a PNG, I should be able to modify showpiece.php for conversion from SVG to PNG. Then I could make sure that the PNG is also a palette image with green for the transparent color.
Maybe he was considering that Game Courier highlights spaces with image borders and wanted to leave some space for the border. However, the borders used are larger than one pixel in width, and the Square Table method will now keep borders from growing too large by reducing the dimensions of the image, whereas the CSS method puts borders around an empty space of a fixed size. So, even if making the images smaller than 50x50 once had some utility, it no longer does.
Since Game Courier is able to copy an SVG to a GD image that will be saved as a PNG, I should be able to modify showpiece.php for conversion from SVG to PNG. Then I could make sure that the PNG is also a palette image with green for the transparent color.