canvaskit-wasm 0.39
build 2026-04-29
ImageInfo
A plain JS object describing the pixel layout of an image / surface / pixel buffer. Required by MakeRasterDirectSurface, MakeImage, Canvas.readPixels, and similar APIs that need to know how to interpret raw bytes.
const info = {
width: 256,
height: 256,
colorType: CK.ColorType.RGBA_8888,
alphaType: CK.AlphaType.Unpremul,
colorSpace: CK.ColorSpace.SRGB,
};Fields
| Field | Type | Notes |
|---|---|---|
width | number | Image width in pixels. |
height | number | Image height in pixels. |
colorType | ColorType | Per-pixel byte layout (RGBA_8888, BGRA_8888, RGBA_F16, RGBA_F32, etc.). |
alphaType | AlphaType | Premul / Unpremul / Opaque. |
colorSpace | ColorSpace | SRGB / DisplayP3 / AdobeRGB. |
Related
PartialImageInfo is the result of image.getImageInfo() — same fields but doesn't carry a colorSpace.
See also
ColorType,AlphaType,ColorSpace.Canvas.readPixels,Image.readPixels.Surfacefactories —MakeRasterDirectSurfaceandMakeSurfaceconsume anImageInfo.