CanvasGradient

2D canvas canvas-2d

Baseline: Widely available on the web, in every major browser since Jul 2015, and long enough to count on (since Jan 2018).

niso: Partial 77%. 1209 of 1553 subtests pass, by system: Linux 77%, macOS 77%. Engines: QuickJS, the engine niso's WPT run uses; Node and Porffor have no recorded run. WPT results recorded at f3b4fa8, 2026-11-10; web-features 3.45.0. WPT tests · niso's support · CanvasGradient, CanvasPattern, CanvasRenderingContext2D, ImageData

CanvasGradient is an interface in idl/canvas.webidl, exposed in Window, Worker. What it does is on MDN; this page says what niso has of it.

Status

The web features its members belong to, each with its Baseline status on the web and how much of the feature’s WPT suite passes in niso (see Web platform support).

Feature	On the web	In niso	Members
2D canvas	Widely available	Partial 77% 1209 of 1553 subtests pass	2

Members

addColorStop()

operation

undefined addColorStop(double offset, DOMString color);

int32_t niso_canvas_gradient_add_color_stop(niso_dom* dom, niso_handle self, double offset, const char* color, size_t color_len);