CSS Device Adaptation

Method of overriding the size of viewport in web page using the `@viewport` rule, replacing Apple's own popular `<meta>` viewport implementation. Includes the `extend-to-zoom` width value.

W3C Working Draft: https://www.w3.org/TR/css-device-adapt/

Usage: 0% + 0.37% = 0.37%

Support summary

IE: partial since 10, prefixed since 10, notes for version 10₁
Edge: partial since 12, prefixed since 12, available but disabled by default since 79, notes for version 12₁
Firefox: Not supported
Chrome: available but disabled by default since 29
Safari: Not supported
Opera: available but disabled by default since 40
Safari on iOS: Not supported
Opera Mini: partial since all, prefixed since all, notes for version all₂
Android Browser: Not supported
Blackberry Browser: Not supported
Opera Mobile: partial since 11, prefixed since 11, notes for version 11₂
Chrome for Android: Not supported
Firefox for Android: Not supported
IE Mobile: partial since 10, prefixed since 10, notes for version 10₁
UC Browser for Android: Not supported
Samsung Internet: Not supported
QQ Browser: available but disabled by default since 14.9
Baidu Browser: Not supported
KaiOS Browser: Not supported

Notes

Due to lack of implementation this specification is slated to be retired.

IE only supports the 'width' and 'height' properties. ↑
Opera Mobile and Opera Mini only support the 'orientation' property. ↑

Full support table

IE

5.5	6	7	8	9	10	11
n	n	n	n	n	a,x	a,x

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	138	139	140	141	142	143
a,x	a,x	a,x	a,x	a,x	a,x	a,x	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d

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	144	145	146	147	148	149
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	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	142	143	144	145	146
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,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d

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	18.5-18.6	26.0	26.1	26.2	26.3	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	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	118	119	120	121	122	123	124	125
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,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d	n,d

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	18.5-18.7	26.0	26.1	26.2	26.3
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

Opera Mini

all
a,x

Android Browser

2.1	2.2	2.3	3	4	4.1	4.2-4.3	4.4	4.4.3-4.4.4	143
n	n	n	n	n	n	n	n	n	n

Blackberry Browser

7	10
n	n

Opera Mobile

10	11	11.1	11.5	12	12.1	80
n	a,x	a,x	a,x	a,x	a,x	n

Chrome for Android

143
n

Firefox for Android

146
n

IE Mobile

10	11
a,x	a,x

UC Browser for Android

15.5
n

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	29
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

QQ Browser

14.9
n,d

Baidu Browser

13.52
n

KaiOS Browser

2.5	3.0-3.1
n	n

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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