CSS3 tab-size

Method of customizing the width of the tab character. Only effective using 'white-space: pre' or 'white-space: pre-wrap'.

Spec	https://www.w3.org/TR/css3-text/#tab-size
Status	W3C Working Draft

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

Notes

1. Partial refers to supporting <integer> but not <length> values.

^* Partial support with prefix.

Bugs

• Firefox up to and including 52 did not support <length> values

Resources

• MDN Web Docs - CSS tab-size
• Microsoft Edge feature request on UserVoice
• Firefox bug to unprefix `-moz-tab-size`