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SVGGraphicsElement: getScreenCTM() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨July 2015⁩.

The getScreenCTM() method of the SVGGraphicsElement interface represents the matrix that transforms the current element's coordinate system to the coordinate system of the SVG viewport for the SVG document fragment.

Syntax

getScreenCTM()

Parameters

None.

Return value

A DOMMatrix object.

Examples

Getting the Screen Transformation Matrix

<svg xmlns="http://www.w3.org/2000/svg" width="400" height="400">
  <!-- Circle with translation and scale -->
  <circle
    id="circle"
    cx="50"
    cy="50"
    r="30"
    fill="blue"
    transform="translate(100, 150) scale(2)" />
</svg>

const circle = document.getElementById("circle");

// Get the current screen transformation matrix
const screenCTM = circle.getScreenCTM();

console.log("Screen transformation matrix:");
console.log(
  `a: ${screenCTM.a}, b: ${screenCTM.b}, c: ${screenCTM.c}, d: ${screenCTM.d}, e: ${screenCTM.e}, f: ${screenCTM.f}`,
);
// Output: a: 2, b: 0, c: 0, d: 2, e: 100, f: 150

Specifications

Specification
Scalable Vector Graphics (SVG) 2> # __svg__SVGGraphicsElement__getScreenCTM>

Browser compatibility

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet	WebView Android	WebView on iOS
`getScreenCTM`	1	12	1.5	≤12.1	3 Transforms on the parent are not propagated down to its children; see bug 209220.	18	4	≤12.1	1 Transforms on the parent are not propagated down to its children; see bug 209220.	1.0	3	1 Transforms on the parent are not propagated down to its children; see bug 209220.

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https://developer.mozilla.org/en-US/docs/Web/API/SVGGraphicsElement/getScreenCTM