Three of the Compression Numbers My Own UI Was Advertising Were Wrong

<p>My <a href="https://compressdog.com/" rel="noopener noreferrer">compressor</a> has a row of small buttons under it. Each one advertises a saving:<br> "about 3% smaller in our tests", "+0.6%", "about 2% larger", "5–10% smaller".</p> <p>Those numbers came from six images and a PSNR score.</p> <p>Six images is a spot check, not a test. And PSNR was the wrong metric — my own<br> encoder code says s

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