SVGImageElement.decoding
  The decoding property of the
  SVGImageElement interface represents a hint given to the browser on how
  it should decode the image.
Value
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.svg';
Specifications
| Specification | 
|---|
| HTML Standard # dom-img-decoding | 
Browser compatibility
BCD tables only load in the browser