Alt-Svc

Read More at MDN DocsView Spec

Safe to Use

Alt-Svc is not safe to use.

It’s supported by 75% of global browsers.

Browsers

ChromeDec 11, 2008v1.0.0
25%╱100%
100% of Chrome users are running a supported version.
SafariUnsupported
Safari does not support this feature.
EdgeJan 15, 2020v79.0.0
4%╱100%
There are no users of Edge running a supported version.
FirefoxMay 12, 2015v38.0.0
3%╱99%
There are no users of Firefox running a supported version.

Version Breakdown

 
Agent
Support
Adoption
Chrome
Dec 11, 2008 v1.0.0
25%╱100%
100% of Chrome users are running a supported version.
Dec 11, 2008 – Latest
v1.0.0+
25%╱100%

Full Support

Chrome Android
Unknown v1.0.0
39%╱100%
100% of Chrome Android users are running a supported version.
Unknown
v1.0.0+
39%╱100%

Full Support

Edge
Jan 15, 2020 v79.0.0
4%╱100%
There are no users of Edge running a supported version.
Jan 15, 2020 – Latest
v79.0.0+
4%╱100%

Full Support

Firefox
May 12, 2015 v38.0.0
3%╱99%
There are no users of Firefox running a supported version.
May 12, 2015 – Latest
v38.0.0+
3%╱99%

Full Support

Mar 31, 2015 – May 12, 2015
v37.0.0 – v38.0.0

Partial Support

Only supports draft-04

Firefox for Android
May 12, 2015 v38.0.0
Firefox for Android supports this feature.
May 12, 2015 – Latest
v38.0.0+

Full Support

Mar 31, 2015 – May 12, 2015
v37.0.0 – v38.0.0

Partial Support

Only supports draft-04

Internet Explorer
Unsupported
Internet Explorer does not support this feature.

No Support

 
Quest Browser
Unknown v1.0.0
Quest Browser supports this feature.
Unknown
v1.0.0+

Full Support

Opera
Unknown v1.0.0
2%╱100%
100% of Opera users are running a supported version.
Unknown
v1.0.0+
2%╱100%

Full Support

Opera Android
Unknown v1.0.0
Opera Android supports this feature.
Unknown
v1.0.0+

Full Support

Safari
Unsupported
Safari does not support this feature.

No Support

Safari on iOS
Unsupported
Safari on iOS does not support this feature.

No Support

Samsung Internet
Apr 27, 2013 v1.0.0
3%╱100%
100% of Samsung Internet users are running a supported version.
Apr 27, 2013 – Latest
v1.0.0+
3%╱100%

Full Support

WebView Android
Sep 23, 2008 v1.0.0
WebView Android supports this feature.
Sep 23, 2008 – Latest
v1.0.0+

Full Support

See Also

Contribute