Signed HTTP Exchanges (SXG)
Part of the Web Packaging spec, Signed HTTP Exchanges allow a different origin server to provide a resource, and this will be treated as if it came from the original server. This can be used with AMP CDNs, for example, to allow the original URL to be displayed in the URL bar.
Other: https://tools.ietf.org/html/draft-yasskin-http-origin-signed-responses
Usage: 76.5% + 0% = 76.5%
Support summary
- IE: Not supported
- Edge: 79
- Firefox: Not supported
- Chrome: 73, partial since 71, notes for version 711
- Safari: Not supported
- Opera: 64
- Safari on iOS: Not supported
- Opera Mini: Not supported
- Android Browser: 137
- Blackberry Browser: Not supported
- Opera Mobile: 80
- Chrome for Android: 137
- Firefox for Android: Not supported
- IE Mobile: Not supported
- UC Browser for Android: 15.5
- Samsung Internet: 11.1-11.2
- QQ Browser: 14.9
- Baidu Browser: 13.52
- KaiOS Browser: Not supported
Notes
Note this requires the page to be delivered signed by a certificate with the CanSignHttpExchanges extension.
- Partial support behind a feature flag (chrome://flags/#enable-signed-http-exchange)
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Links
Full support table
IE
Edge
| 12 | 13 | 14 | 15 | 16 | 17 | 18 | 79 | 80 | 81 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115 | 116 | 117 | 118 | 119 | 120 | 121 | 122 | 123 | 124 | 125 | 126 | 127 | 128 | 129 | 130 | 131 | 132 | 133 | 134 | 135 | 136 | 137 |
|---|
| n | n | n | n | n | n | n | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y |
Firefox
| 2 | 3 | 3.5 | 3.6 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115 | 116 | 117 | 118 | 119 | 120 | 121 | 122 | 123 | 124 | 125 | 126 | 127 | 128 | 129 | 130 | 131 | 132 | 133 | 134 | 135 | 136 | 137 | 138 | 139 | 140 | 141 | 142 | 143 |
|---|
| n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n |
Chrome
| 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115 | 116 | 117 | 118 | 119 | 120 | 121 | 122 | 123 | 124 | 125 | 126 | 127 | 128 | 129 | 130 | 131 | 132 | 133 | 134 | 135 | 136 | 137 | 138 | 139 | 140 | 141 |
|---|
| n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | a | a | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y |
Safari
| 3.1 | 3.2 | 4 | 5 | 5.1 | 6 | 6.1 | 7 | 7.1 | 8 | 9 | 9.1 | 10 | 10.1 | 11 | 11.1 | 12 | 12.1 | 13 | 13.1 | 14 | 14.1 | 15 | 15.1 | 15.2-15.3 | 15.4 | 15.5 | 15.6 | 16.0 | 16.1 | 16.2 | 16.3 | 16.4 | 16.5 | 16.6 | 17.0 | 17.1 | 17.2 | 17.3 | 17.4 | 17.5 | 17.6 | 18.0 | 18.1 | 18.2 | 18.3 | 18.4 | 18.5 | 26.0 | TP |
|---|
| n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n |
Opera
| 9 | 9.5-9.6 | 10.0-10.1 | 10.5 | 10.6 | 11 | 11.1 | 11.5 | 11.6 | 12 | 12.1 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 60 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115 | 116 | 117 |
|---|
| n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y |
Safari on iOS
| 3.2 | 4.0-4.1 | 4.2-4.3 | 5.0-5.1 | 6.0-6.1 | 7.0-7.1 | 8 | 8.1-8.4 | 9.0-9.2 | 9.3 | 10.0-10.2 | 10.3 | 11.0-11.2 | 11.3-11.4 | 12.0-12.1 | 12.2-12.5 | 13.0-13.1 | 13.2 | 13.3 | 13.4-13.7 | 14.0-14.4 | 14.5-14.8 | 15.0-15.1 | 15.2-15.3 | 15.4 | 15.5 | 15.6-15.8 | 16.0 | 16.1 | 16.2 | 16.3 | 16.4 | 16.5 | 16.6-16.7 | 17.0 | 17.1 | 17.2 | 17.3 | 17.4 | 17.5 | 17.6-17.7 | 18.0 | 18.1 | 18.2 | 18.3 | 18.4 | 18.5 | 26.0 |
|---|
| n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n | n |
Opera Mini
Android Browser
| 2.1 | 2.2 | 2.3 | 3 | 4 | 4.1 | 4.2-4.3 | 4.4 | 4.4.3-4.4.4 | 137 |
|---|
| n | n | n | n | n | n | n | n | n | y |
Blackberry Browser
Opera Mobile
| 10 | 11 | 11.1 | 11.5 | 12 | 12.1 | 80 |
|---|
| n | n | n | n | n | n | y |
Chrome for Android
Firefox for Android
IE Mobile
UC Browser for Android
Samsung Internet
| 4 | 5.0-5.4 | 6.2-6.4 | 7.2-7.4 | 8.2 | 9.2 | 10.1 | 11.1-11.2 | 12.0 | 13.0 | 14.0 | 15.0 | 16.0 | 17.0 | 18.0 | 19.0 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 |
|---|
| n | n | n | n | n | n | n | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y | y |
QQ Browser
Baidu Browser
KaiOS Browser
- y = supported
- a = partially supported, see notes
- x = supported with a prefix, e.g. moz, webkit
- p = supported with a polyfill
- d = available but disabled by default; the feature need to be enabled in about:config, chrome://flags, etc.
- n = not supported
- u = unknown/untested
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