HTTP/3 protocol

Upcoming version of the HTTP networking protocol, which is currently a draft. Previously known as HTTP-over-QUIC. Uses QUIC as its transport layer protocol.

Spec	https://tools.ietf.org/html/draft-ietf-quic-http-29
Status	Other

IE	Edge	Firefox	Chrome	Safari	Opera
			98
		95	97
		94	96	TP ⁽⁴⁾
11	95	93	95	15 ⁽⁴⁾	80
10	94	92	94	14.1 ⁽⁴⁾	79
9	93	91	93	14 ⁽⁴⁾	78
8	92	90	92	13.1	77
Show all
7	91	89	91	13	76
6	90	88	90	12.1	75
5.5	89	87 ⁽¹⁾	89	12	74
	88	86 ⁽¹⁾	88	11.1	73 ⁽³⁾
	87	85 ⁽¹⁾	87	11	72
	86 ⁽³⁾	84 ⁽¹⁾	86 ⁽³⁾	10.1	71
	85 ⁽³⁾	83 ⁽¹⁾	85 ⁽³⁾	10	70
	84 ⁽²⁾	82 ⁽¹⁾	84 ⁽²⁾	9.1	69
	83 ⁽²⁾	81 ⁽¹⁾	83 ⁽²⁾	9	68
	81 ⁽²⁾	80 ⁽¹⁾	81 ⁽²⁾	8	67
	80 ⁽²⁾	79 ⁽¹⁾	80 ⁽²⁾	7.1	66
	79 ⁽²⁾	78 ⁽¹⁾	79 ⁽²⁾	7	65
	18	77 ⁽¹⁾	78	6.1	64
	17	76 ⁽¹⁾	77	6	63
	16	75 ⁽¹⁾	76	5.1	62
	15	74 ⁽¹⁾	75	5	60
	14	73 ⁽¹⁾	74	4	58
	13	72 ⁽¹⁾	73	3.2	57
	12	71	72	3.1	56
		70	71		55
		69	70		54
		68	69		53
		67	68		52
		66	67		51
		65	66		50
		64	65		49
		63	64		48
		62	63		47
		61	62		46
		60	61		45
		59	60		44
		58	59		43
		57	58		42
		56	57		41
		55	56		40
		54	55		39
		53	54		38
		52	53		37
		51	52		36
		50	51		35
		49	50		34
		48	49		33
		47	48		32
		46	47		31
		45	46		30
		44	45		29
		43	44		28
		42	43		27
		41	42		26
		40	41		25
		39	40		24
		38	39		23
		37	38		22
		36	37		21
		35	36		20
		34	35		19
		33	34		18
		32	33		17
		31	32		16
		30	31		15
		29	30		12.1
		28	29		12
		27	28		11.6
		26	27		11.5
		25	26		11.1
		24	25		11
		23	24		10.6
		22	23		10.5
		21	22		10.0-10.1
		20	21		9.5-9.6
		19	20		9
		18	19
		17	18
		16	17
		15	16
		14	15
		13	14
		12	13
		11	12
		10	11
		9	10
		8	9
		7	8
		6	7
		5	6
		4	5
		3.6	4
		3.5
		3
		2

Safari on iOS	Opera Mini	Android Browser	Blackberry Browser	Opera Mobile	Android Chrome	Android Firefox	IE Mobile	Android UC Browser	Samsung Internet	QQ Browser	Baidu Browser	KaiOS Browser
15	all	94	10	64	94	92 ⁽¹⁾	11	12.12	15.0	10.4	7.12	2.5
14.5-14.8		4.4.3-4.4.4	7	12.1			10		14.0
14.0-14.4		4.4		12					13.0
13.4-13.7		4.2-4.3		11.5					12.0
Show all
13.3		4.1		11.1					11.1-11.2
13.2		4		11					10.1
13.0-13.1		3		10					9.2
12.2-12.5		2.3							8.2
12.0-12.1		2.2							7.2-7.4
11.3-11.4		2.1							6.2-6.4
11.0-11.2									5.0-5.4
10.3									4
10.0-10.2
9.3
9.0-9.2
8.1-8.4
8
7.0-7.1
6.0-6.1
5.0-5.1
4.2-4.3
4.0-4.1
3.2

Notes

Can be enabled in Firefox via the network.http.http3.enabled pref in about:config.
Can be enabled in Chrome(Chromium) via the --enable-quic & --quic-version=h3-23 command line arguments.
Can be enabled in Chrome(Chromium) via the --enable-quic & --quic-version=h3-29 command line arguments.
Can be enabled in Safari on macOS 11 Big Sur in the "Experimental Features" developer menu.

Resources

Wikipedia article about HTTP/3

Data by caniuse.com
Licensed under the Creative Commons Attribution License v4.0.
https://caniuse.com/http3