/Web APIs


Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The XRAnchor interface creates anchors which keep track of the pose that is fixed relative to the real world. With anchors, you can specify poses in the world that need to be updated to correctly reflect the evolving understanding of the world, such that the poses remain aligned with the same place in the physical world. That helps to build an illusion that the placed objects are really present in the user's environment.

Instance properties

XRAnchor.anchorSpace Read only Experimental

Returns an XRSpace object to locate the anchor relative to other XRSpace objects.

Instance methods

XRAnchor.delete() Experimental

Removes the anchor.


Requesting a session with anchors enabled


navigator.xr.requestSession("immersive-ar", {
  requireFeatures: ["anchors"],

Adding anchors

You can use XRFrame.createAnchor() to create an anchor.


frame.createAnchor(anchorPose, referenceSpace).then(
  (anchor) => {
    // Do stuff with the anchor (assign objects that will be relative to this anchor)
  (error) => {
    console.error(`Could not create anchor: ${error}`);


Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
XRAnchor 85 85 No No 71 No No 85 No 60 No 14.0
anchorSpace 85 85 No No 71 No No 85 No 60 No 14.0
delete 85 85 No No 71 No No 85 No 60 No 14.0

See also

© 2005–2023 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.