RTCCertificate

Baseline Widely available *

This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.

* Some parts of this feature may have varying levels of support.

The RTCCertificate interface of the WebRTC API provides an object representing a certificate that an RTCPeerConnection uses to authenticate.

RTCCertificate is a serializable object, so it can be cloned with structuredClone() or copied between Workers using postMessage().

Instance properties

RTCCertificate.expires Read only

Returns the expiration date of the certificate.

Instance methods

RTCCertificate.getFingerprints()

Returns an array of certificate fingerprints, calculated using the different algorithms supported by the browser.

Specifications

Specification
WebRTC: Real-Time Communication in Browsers
# dom-rtccertificate

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
RTCCertificate
Chrome – Full support
Chrome 49 (Release date: 2016-03-02)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – Full support
Firefox 42 (Release date: 2015-11-03)
footnote Full support
Opera – Full support
Opera 36 (Release date: 2016-03-15)
footnote Full support
Safari – Full support
Safari 12.1 (Release date: 2019-03-25)
footnote Full support
Chrome Android – Full support
Chrome Android 49 (Release date: 2016-03-09)
footnote Full support
Firefox for Android – Full support
Firefox for Android 42 (Release date: 2015-11-03)
footnote Full support
Opera Android – Full support
Opera Android 36 (Release date: 2016-03-31)
footnote Full support
Safari on iOS – Full support
Safari on iOS 12.2 (Release date: 2019-03-25)
footnote Full support
Samsung Internet – Full support
Samsung Internet 5 (Release date: 2016-12-15)
footnote Full support
WebView Android – Full support
WebView Android 49 (Release date: 2016-03-09)
footnote Full support
WebView on iOS – Full support
WebView on iOS 12.2 (Release date: 2019-03-25)
footnote Full support
expires
Chrome – Full support
Chrome 49 (Release date: 2016-03-02)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – Full support
Firefox 42 (Release date: 2015-11-03)
footnote Full support
Opera – Full support
Opera 36 (Release date: 2016-03-15)
footnote Full support
Safari – Full support
Safari 12.1 (Release date: 2019-03-25)
footnote Full support
Chrome Android – Full support
Chrome Android 49 (Release date: 2016-03-09)
footnote Full support
Firefox for Android – Full support
Firefox for Android 42 (Release date: 2015-11-03)
footnote Full support
Opera Android – Full support
Opera Android 36 (Release date: 2016-03-31)
footnote Full support
Safari on iOS – Full support
Safari on iOS 12.2 (Release date: 2019-03-25)
footnote Full support
Samsung Internet – Full support
Samsung Internet 5 (Release date: 2016-12-15)
footnote Full support
WebView Android – Full support
WebView Android 49 (Release date: 2016-03-09)
footnote Full support
WebView on iOS – Full support
WebView on iOS 12.2 (Release date: 2019-03-25)
footnote Full support
getFingerprints
Chrome – Full support
Chrome 61 (Release date: 2017-09-05)
footnote Full support
Edge – Full support
Edge 79 (Release date: 2020-01-15)
footnote Full support
Firefox – Full support
Firefox 138 (Release date: 2025-04-29)
footnote Full support
Opera – Full support
Opera 48 (Release date: 2017-09-27)
footnote Full support
Safari – Full support
Safari 12.1 (Release date: 2019-03-25)
footnote Full support
Chrome Android – Full support
Chrome Android 61 (Release date: 2017-09-05)
footnote Full support
Firefox for Android – Full support
Firefox for Android 138 (Release date: 2025-04-29)
footnote Full support
Opera Android – Full support
Opera Android 45 (Release date: 2018-02-15)
footnote Full support
Safari on iOS – Full support
Safari on iOS 12.2 (Release date: 2019-03-25)
footnote Full support
Samsung Internet – Full support
Samsung Internet 8 (Release date: 2018-07-18)
footnote Full support
WebView Android – Full support
WebView Android 61 (Release date: 2017-09-05)
footnote Full support
WebView on iOS – Full support
WebView on iOS 12.2 (Release date: 2019-03-25)
footnote Full support

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

See also