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Resource Hints: preload

Using <link rel="preload">, browsers can be informed to prefetch resources without having to execute them, allowing fine-grained control over when and how resources are loaded.

Spec	https://w3c.github.io/preload/
Status	W3C Candidate Recommendation

IE	Edge	Firefox	Chrome	Safari	Opera
			108
		107	107	TP
		106	106	16.1
11	105	105	105	16.0	91
10	104	104	104	15.6	90
9	103	103	103	15.5	89
8	102	102	102	15.4	88
Show all
7	101	101	101	15.2-15.3	87
6	100	100	100	15.1	86
5.5	99	99	99	15	85
	98	98	98	14.1	84
	97	97	97	14	83
	96	96	96	13.1	82
	95	95	95	13	81
	94	94	94	12.1	80
	93	93	93	12	79
	92	92	92	11.1	78
	91	91	91	11 ⁽²⁾	77
	90	90	90	10.1	76
	89	89	89	10	75
	88	88	88	9.1	74
	87	87	87	9	73
	86	86	86	8	72
	85	85	85	7.1	71
	84	84 ⁽³⁾	84	7	70
	83	83 ⁽³⁾	83	6.1	69
	81	82 ⁽³⁾	81	6	68
	80	81 ⁽³⁾	80	5.1	67
	79	80 ⁽³⁾	79	5	66
	18 ⁽⁴⁾	79 ⁽³⁾	78	4	65
	17 ⁽⁴⁾	78 ⁽³⁾	77	3.2	64
	16	77 ⁽³⁾	76	3.1	63
	15	76 ⁽³⁾	75		62
	14	75 ⁽³⁾	74		60
	13	74 ⁽³⁾	73		58
	12	73 ⁽³⁾	72		57
		72 ⁽³⁾	71		56
		71 ⁽³⁾	70		55
		70 ⁽³⁾	69		54
		69 ⁽³⁾	68		53
		68 ⁽³⁾	67		52
		67 ⁽³⁾	66		51
		66 ⁽³⁾	65		50
		65 ⁽³⁾	64		49
		64 ⁽³⁾	63		48
		63 ⁽³⁾	62		47
		62 ⁽³⁾	61		46
		61 ⁽³⁾	60		45
		60 ⁽³⁾	59		44
		59 ⁽³⁾	58		43
		58 ⁽³⁾	57		42
		57 ⁽³⁾	56		41
		56 ⁽¹⁾	55		40
		55	54		39
		54	53		38
		53	52		37
		52	51		36
		51	50		35
		50	49		34
		49	48		33
		48	47		32
		47	46		31
		46	45		30
		45	44		29
		44	43		28
		43	42		27
		42	41		26
		41	40		25
		40	39		24
		39	38		23
		38	37		22
		37	36		21
		36	35		20
		35	34		19
		34	33		18
		33	32		17
		32	31		16
		31	30		15
		30	29		12.1
		29	28		12
		28	27		11.6
		27	26		11.5
		26	25		11.1
		25	24		11
		24	23		10.6
		23	22		10.5
		22	21		10.0-10.1
		21	20		9.5-9.6
		20	19		9
		19	18
		18	17
		17	16
		16	15
		15	14
		14	13
		13	12
		12	11
		11	10
		10	9
		9	8
		8	7
		7	6
		6	5
		5	4
		4
		3.6
		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
16.1
16.0	all	105	10	64	105	104	11	13.4	18.0	13.1	13.18	2.5
15.6		4.4.3-4.4.4	7	12.1			10		17.0
15.5		4.4		12					16.0
15.4		4.2-4.3		11.5					15.0
Show all
15.2-15.3		4.1		11.1					14.0
15.0-15.1		4		11					13.0
14.5-14.8		3		10					12.0
14.0-14.4		2.3							11.1-11.2
13.4-13.7		2.2							10.1
13.3		2.1							9.2
13.2									8.2
13.0-13.1									7.2-7.4
12.2-12.5									6.2-6.4
12.0-12.1									5.0-5.4
11.3-11.4									4
11.0-11.2 ⁽²⁾
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

Only cachable resources can be preloaded. This includes the following as values: script, style, image, video, audio, track, fetch, and font (note font/collection is not supported).
Can be enabled via the "Experimental Features" developer menu
Disabled by default behind the network.preload flag.
Partial support in Edge 17+ refers to support for only the HTML <link rel> format, not the HTTP header format.

Resources

Data by caniuse.com
Licensed under the Creative Commons Attribution License v4.0.
https://caniuse.com/link-rel-preload