Video Test Pattern Generator

Compose exact-dimension raster and SVG test artwork locally.

Not a calibration instrument: color-space and range selections are metadata labels only. Browser sRGB/color management, display scaling, chroma subsampling, capture, and encoded-video behavior are not calibrated or measured. Patches are not claimed to be broadcast-legal or standards-compliant.

Canvas and metadata

Width (px)Height (px)Pixel aspect ratioColor-space labelRange labelSafe area X (%)Safe area Y (%)Label (80 chars)Timecode / frame text

Layers

Exact sRGB patches

Exact-pixel preview

The scrollable canvas uses its native pixel dimensions; downloads are not CSS-scaled.

Pixel inspector: Move over the canvas.