Zenmetrics

Compare image quality and explore spatial error. Images stay on your device.

Images

ReferenceChoose or drop a file DistortedChoose a file, or generate a JPEG below

JPEG quality40

JPEG, PNG, WebP and JPEG XL use Zen decoders. SDR RGB8 ingress matches the CLI: transparency is preserved and scoring refuses non-opaque pixels. ICC metadata is not applied. Use already composited sRGB images for color-managed comparison.

Metric

Live

Score–

Worker time–

Starting threaded SIMD WASM…

Run the same native metric

Use the same opaque sRGB files. Generated JPEG candidates can be downloaded below. The zensim profile is pinned to B.

Image comparison

Map Palette Background Grey

Overlay Scale

Split 100%

LowHigh error

Load a pair or try the demo sceneMove over the image to inspect a pixel

Map scaling changes only the visualization. Scores and downloaded raw values retain their metric definitions. DSSIM and GMSD retain their native similarity grids; visualization uses 1−similarity. SSIMULACRA2 currently exports a scalar only. Browser timings are interactive feedback, not accepted fleet benchmark observations.