tabindex global attribute

Specifies the focusability of the element and in what order (if any) it should become focused (relative to other elements) when "tabbing" through the document.

Spec	https://html.spec.whatwg.org/multipage/interaction.html#attr-tabindex
Status	WHATWG Living Standard

IE	Edge	Firefox	Chrome	Safari	Opera
			98
		95 ⁽¹⁾	97
		94 ⁽¹⁾	96	TP ⁽²⁾
11	95	93 ⁽¹⁾	95	15 ⁽²⁾	80
10	94	92 ⁽¹⁾	94	14.1 ⁽²⁾	79
9	93	91 ⁽¹⁾	93	14 ⁽²⁾	78
8	92	90 ⁽¹⁾	92	13.1 ⁽²⁾	77
Show all
7	91	89 ⁽¹⁾	91	13 ⁽²⁾	76
6	90	88 ⁽¹⁾	90	12.1 ⁽²⁾	75
5.5	89	87 ⁽¹⁾	89	12 ⁽²⁾	74
	88	86 ⁽¹⁾	88	11.1 ⁽²⁾	73
	87	85 ⁽¹⁾	87	11 ⁽²⁾	72
	86	84 ⁽¹⁾	86	10.1 ⁽²⁾	71
	85	83 ⁽¹⁾	85	10 ⁽²⁾	70
	84	82 ⁽¹⁾	84	9.1 ⁽²⁾	69
	83	81 ⁽¹⁾	83	9 ⁽²⁾	68
	81	80 ⁽¹⁾	81	8 ⁽²⁾	67
	80	79 ⁽¹⁾	80	7.1 ⁽²⁾	66
	79	78 ⁽¹⁾	79	7 ⁽²⁾	65
	18	77 ⁽¹⁾	78	6.1 ⁽²⁾	64
	17	76 ⁽¹⁾	77	6 ⁽²⁾	63
	16	75 ⁽¹⁾	76	5.1 ⁽²⁾	62
	15	74 ⁽¹⁾	75	5	60
	14	73 ⁽¹⁾	74	4	58
	13	72 ⁽¹⁾	73	3.2	57
	12	71 ⁽¹⁾	72	3.1	56
		70 ⁽¹⁾	71		55
		69 ⁽¹⁾	70		54
		68 ⁽¹⁾	69		53
		67 ⁽¹⁾	68		52
		66 ⁽¹⁾	67		51
		65 ⁽¹⁾	66		50
		64 ⁽¹⁾	65		49
		63 ⁽¹⁾	64		48
		62 ⁽¹⁾	63		47
		61 ⁽¹⁾	62		46
		60 ⁽¹⁾	61		45
		59 ⁽¹⁾	60		44
		58 ⁽¹⁾	59		43
		57 ⁽¹⁾	58		42
		56 ⁽¹⁾	57		41
		55 ⁽¹⁾	56		40
		54 ⁽¹⁾	55		39
		53 ⁽¹⁾	54		38
		52 ⁽¹⁾	53		37
		51 ⁽¹⁾	52		36
		50 ⁽¹⁾	51		35
		49 ⁽¹⁾	50		34
		48 ⁽¹⁾	49		33
		47 ⁽¹⁾	48		32
		46 ⁽¹⁾	47		31
		45 ⁽¹⁾	46		30
		44 ⁽¹⁾	45		29
		43 ⁽¹⁾	44		28
		42 ⁽¹⁾	43		27
		41 ⁽¹⁾	42		26
		40 ⁽¹⁾	41		25
		39 ⁽¹⁾	40		24
		38 ⁽¹⁾	39		23
		37 ⁽¹⁾	38		22
		36 ⁽¹⁾	37		21
		35 ⁽¹⁾	36		20
		34 ⁽¹⁾	35		19
		33 ⁽¹⁾	34		18
		32 ⁽¹⁾	33		17
		31 ⁽¹⁾	32		16
		30 ⁽¹⁾	31		15
		29 ⁽¹⁾	30		12.1
		28 ⁽¹⁾	29		12
		27 ⁽¹⁾	28		11.6
		26 ⁽¹⁾	27		11.5
		25 ⁽¹⁾	26		11.1
		24 ⁽¹⁾	25		11
		23 ⁽¹⁾	24		10.6
		22 ⁽¹⁾	23		10.5
		21 ⁽¹⁾	22		10.0-10.1
		20 ⁽¹⁾	21		9.5-9.6
		19 ⁽¹⁾	20		9
		18 ⁽¹⁾	19
		17 ⁽¹⁾	18
		16 ⁽¹⁾	17
		15 ⁽¹⁾	16
		14 ⁽¹⁾	15
		13 ⁽¹⁾	14
		12 ⁽¹⁾	13
		11 ⁽¹⁾	12
		10 ⁽¹⁾	11
		9 ⁽¹⁾	10
		8 ⁽¹⁾	9
		7 ⁽¹⁾	8
		6 ⁽¹⁾	7
		5 ⁽¹⁾	6
		4 ⁽¹⁾	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 ^(2,3)	all	94	10	64	94	92	11	12.12	15.0	10.4	7.12	2.5 ⁽¹⁾
14.5-14.8 ^(2,3)		4.4.3-4.4.4	7	12.1			10		14.0
14.0-14.4 ^(2,3)		4.4		12					13.0
13.4-13.7 ^(2,3)		4.2-4.3		11.5					12.0
Show all
13.3 ^(2,3)		4.1		11.1					11.1-11.2
13.2 ^(2,3)		4		11					10.1
13.0-13.1 ^(2,3)		3		10					9.2
12.2-12.5 ^(2,3)		2.3							8.2
12.0-12.1 ^(2,3)		2.2							7.2-7.4
11.3-11.4 ^(2,3)		2.1							6.2-6.4
11.0-11.2 ^(2,3)									5.0-5.4
10.3 ^(2,3)									4
10.0-10.2 ^(2,3)
9.3 ^(2,3)
9.0-9.2 ^(2,3)
8.1-8.4 ^(2,3)
8 ^(2,3)
7.0-7.1 ^(2,3)
6.0-6.1 ^(2,3)
5.0-5.1 ^(2,3)
4.2-4.3 ^(2,3)
4.0-4.1 ^(2,3)
3.2 ^(2,3)

Notes

Mac OS X "Full Keyboard Access" refers to setting Keyboard→Shortcuts→Full Keyboard Access to "All controls" in the System Preferences.

"Unknown" support for mobile browsers is due to lacking a method of tabbing through fields.

On Mac OS X, unless Full Keyboard Access is enabled, <a> elements are not keyboard-focusable, even if they have tabindex="0".
<a> elements are never keyboard-focusable, even if they have tabindex="0". Unless Full Keyboard Access is enabled, then <button>s, radio buttons, and checkboxes are also not keyboard-focusable, even if they have tabindex="0".
Has "previous" and "next" virtual keyboard buttons that follow tabindex order.

Bugs

Edge Bug 4355703 - tabIndex attribute getter returns 0 instead of -1 for elements without explicit tabindex

Resources

MDN Web Docs - tabindex attribute

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