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

2. Can be enabled via the "Experimental Features" developer menu

3. Disabled by default behind the network.preload flag.

4. Partial support in Edge 17+ refers to support for only the HTML <link rel> format, not the HTTP header format.

Resources

• Preload: What Is It Good For?
• MDN Web Docs - Preloading content with rel="preload"
• Firefox meta support bug