Web/API/TextMetrics/actualBoundingBoxDescent

The read-only actualBoundingBoxDescent property of the TextMetrics interface is a double giving the distance from the horizontal line indicated by the CanvasRenderingContext2D.textBaseline attribute to the bottom of the bounding rectangle used to render the text, in CSS pixels.

Examples

const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
const text = ctx.measureText('foo'); // returns TextMetrics object

text.actualBoundingBoxDescent; // 0;

Specifications

Specification

HTML Living StandardThe definition of 'TextMetrics.actualBoundingBoxDescent' in that specification.

Browser compatibility

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
actualBoundingBoxDescent Experimental'	Chrome Full support 77 Full support 77 No support ? — 77 Disabled' Disabled' Until version 77 (exclusive): this feature is behind the Experimental Web Platform Features preference. To change preferences in Chrome, visit chrome://flags.	Edge Full support 79	Firefox Full support 74	IE No support No	Opera ?	Safari Full support Yes	WebView Android Full support 77	Chrome Android Full support 77 Full support 77 No support ? — 77 Disabled' Disabled' Until version 77 (exclusive): this feature is behind the Experimental Web Platform Features preference. To change preferences in Chrome, visit chrome://flags.	Firefox Android No support No	Opera Android ?	Safari iOS Full support Yes	Samsung Internet Android Full support 12.0

Legend

Full support  

Full support

No support  

No support

Compatibility unknown  

Compatibility unknown

Experimental. Expect behavior to change in the future.'

Experimental. Expect behavior to change in the future.

User must explicitly enable this feature.'

User must explicitly enable this feature.

See also

• TextMetrics

TextMetrics.actualBoundingBoxDescent by Mozilla Contributors is licensed under CC-BY-SA 2.5.