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Yep, I upscaled them by 400% so they’re easier to view on modern displays.
by decryption 1y ago
Yep, I upscaled them by 400% so they’re easier to view on modern displays.
- perihelions 1y agoI know; I mean to say they're larger file sizes—the PNG compression ratio is effectively less than one. Take the first one, "acius.png", at 84,326 bytes. If you losslessly scale back to the original size (1/4th) and convert to 1-bit NetPBM, it's 51,851 bytes, without compression. I thought that was remarkable.
- encom 1y agoThe PNG files seem to be very poorly compressed. $ oxipng -o max --strip all -avZ --fast acius.png Processing: acius.png 2304x2880 pixels, PNG format 8-bit Indexed (2 colors), non-interlaced IDAT size = 84251 bytes File size = 84326 bytes Transformed image to 1-bit Indexed (2 colors), non-interlaced Trying filter None with zopfli, zi = 15 Found better result: zopfli, zi = 15, f = None IDAT size = 24466 bytes (59785 bytes decrease) file size = 24541 bytes (59785 bytes = 70.90% decrease) 24541 bytes (70.90% smaller): acius.png