HTMLImageElement.decoding

The decoding property of the HTMLImageElement interface represents a hint given to the browser on how it should decode the image.

Syntax

refStr = imgElem.decoding;
imgElem.decoding = refStr;

Values

A DOMString representing the decoding hint. Possible values are:

  • sync: Decode the image synchronously for atomic presentation with other content.
  • async: Decode the image asynchronously to reduce delay in presenting other content.
  • auto: Default mode, which indicates no preference for the decoding mode. The browser decides what is best for the user.

Examples

var img = new Image();
img.decoding = 'sync';
img.src = 'img/logo.png'; 

Specifications

Specification Status Comment
HTML Living Standard
The definition of 'decoding' in that specification.
Living Standard  

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic supportChrome Full support YesEdge ? Firefox Full support 63IE No support NoOpera Full support YesSafari No support NoWebView Android Full support YesChrome Android Full support YesEdge Mobile ? Firefox Android Full support 63Opera Android ? Safari iOS No support NoSamsung Internet Android ?

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown

See also

 

Document Tags and Contributors

Contributors to this page: padraig-ohiceadha, chrisdavidmills
Last updated by: padraig-ohiceadha,