{
 "tool": "image-compress",
 "url": "https://toolio.pongvn.com/tools/image-compress",
 "measured_at": "2026-09-01",
 "corpus": {
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  "source": "github.com/MohamedBakrAli/Kodak-Lossless-True-Color-Image-Suite",
  "note": "The standard photographic test set used in compression research (24 PNG images, 768x512). Real photographs, not synthetic imagery.",
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 "method": "라이브 페이지를 Chromium 으로 열어 파일을 실제로 넣고 결과 blob 을 받아 쟀다. 인코더는 툴이 쓰는 것 그대로다(canvas toBlob 또는 ffmpeg.wasm). 로컬 ffmpeg 는 디코더·SSIM 측정에만 썼다.",
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}