Variable fonts

OpenType font settings that allows a single font file to behave like multiple fonts: it can contain all the allowed variations in width, weight, slant, optical size, or any other exposed axes of variation as defined by the font designer. Variations can be applied via the font-variation-settings property.

Spec	https://drafts.csswg.org/css-fonts-4/#font-variation-settings-def
Status	W3C Working Draft

IE	Edge	Firefox	Chrome	Safari	Opera
			103
		100 (3,7)	102
		99 (3,7)	101	TP
11	99	98 (3,7)	100	15.4	83
10	98	97 (3,7)	99	15.2-15.3	82
9	97	96 (3,7)	98	15.1	81
8	96	95 (3,7)	97	15	80
Show all
7	95	94 (3,7)	96	14.1 (7)	79
6	94	93 (3,7)	95	14 (7)	78
5.5	93	92 (3,7)	94	13.1 (7)	77
	92	91 (3,7)	93	13 (7)	76
	91	90 (3,7)	92	12.1 (3,6)	75
	90	89 (3,7)	91	12 (3,6)	74
	89	88 (3,7)	90	11.1 (3,6)	73
	88	87 (3,7)	89	11 (3,6)	72
	87	86 (3,7)	88	10.1	71
	86	85 (3,7)	87	10	70
	85	84 (3,7)	86	9.1	69
	84	83 (3,7)	85	9	68
	83	82 (3,7)	84	8	67
	81	81 (3,7)	83	7.1	66
	80	80 (3,7)	81	7	65
	79	79 (3,7)	80	6.1	64
	18	78 (3,7)	79	6	63
	17	77 (3,7)	78	5.1	62
	16	76 (3,7)	77	5	60
	15	75 (3,7)	76	4	58
	14	74 (3,7)	75	3.2	57
	13	73 (3,7)	74	3.1	56
	12	72 (3,7)	73		55
		71 (3,7)	72		54
		70 (3,6)	71		53 (6)
		69 (3,6)	70		52 (5,6)
		68 (3,6)	69		51 (5,6)
		67 (3,6)	68		50 (5,6)
		66 (3,6)	67		49 (5,6)
		65 (3,6)	66 (6)		48
		64 (3,6)	65 (5,6)		47
		63 (3,6)	64 (5,6)		46
		62 (3,6)	63 (5,6)		45
		61 (3,6)	62 (5,6)		44
		60 (3,4,6)	61 (1,6)		43
		59 (3,4,5,6)	60 (1,6)		42
		58 (3,4,5,6)	59 (1,6)		41
		57 (2,4,5,6)	58		40
		56 (2,4,5,6)	57		39
		55 (2,4,5,6)	56		38
		54 (2,4,5,6)	55		37
		53 (2,4,5,6)	54		36
		52	53		35
		51	52		34
		50	51		33
		49	50		32
		48	49		31
		47	48		30
		46	47		29
		45	46		28
		44	45		27
		43	44		26
		42	43		25
		41	42		24
		40	41		23
		39	40		22
		38	39		21
		37	38		20
		36	37		19
		35	36		18
		34	35		17
		33	34		16
		32	33		15
		31	32		12.1
		30	31		12
		29	30		11.6
		28	29		11.5
		27	28		11.1
		26	27		11
		25	26		10.6
		24	25		10.5
		23	24		10.0-10.1
		22	23		9.5-9.6
		21	22		9
		20	21
		19	20
		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
15.4	all	99	10	64	100	98 (6)	11	12.12	16.0 (6)	10.4 (6)	7.12	2.5
15.2-15.3		4.4.3-4.4.4	7	12.1			10		15.0 (6)
15.0-15.1		4.4		12					14.0 (6)
14.5-14.8		4.2-4.3		11.5					13.0 (6)
Show all
14.0-14.4		4.1		11.1					12.0 (6)
13.4-13.7		4		11					11.1-11.2 (6)
13.3		3		10					10.1 (6)
13.2		2.3							9.2 (6)
13.0-13.1		2.2							8.2 (6)
12.2-12.5 (6)		2.1							7.2-7.4
12.0-12.1 (6)									6.2-6.4
11.3-11.4 (6)									5.0-5.4
11.0-11.2 (6)									4
10.3
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

1. Works with Experimental Web Platform features enabled

2. Requires MacOS 10.12+ and the following about:config flags to be enabled:
   layout.css.font-variations.enabled,
   gfx.downloadable_fonts.keep_variation_tables

3. Requires MacOS 10.13+

4. Does not support the font-weight and font-stretch properties.

5. Does not support format('truetype-variations'), format('woff-variations'), format('woff2-variations')

6. Does not support OpenType-CFF2 fonts

7. OpenType-CFF2 support requires MacOS 10.15+

Bugs

• Chrome supports format('*-variations') inside the @font-face block only starting from Chrome version 66.

Resources

• MDN Web docs article
• How to use variable fonts in the real world
• v-fonts.com - A simple resource for finding and trying variable fonts
• Axis-Praxis - Tool & info on variable fonts