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autocomplete attribute: on & off values

The autocomplete attribute for input elements indicates to the browser whether a value should or should not be autofilled when appropriate.

Spec	https://html.spec.whatwg.org/multipage/forms.html#autofill
Status	WHATWG Living Standard

IE	Edge	Firefox	Chrome	Safari	Opera
		57 ⁽³⁾	62 ⁽²⁾
		56 ⁽³⁾	61 ⁽²⁾	TP ⁽⁵⁾	48
	16 ⁽¹⁾	55 ⁽³⁾	60 ⁽²⁾	11 ⁽⁵⁾	47
11 ⁽¹⁾	15 ⁽¹⁾	54 ⁽³⁾	59 ⁽²⁾	10.1 ⁽⁵⁾	46
10	14 ⁽¹⁾	53 ⁽³⁾	58 ⁽²⁾	10 ⁽⁵⁾	45
9	13 ⁽¹⁾	52 ⁽³⁾	57 ⁽²⁾	9.1 ⁽⁵⁾	44
8	12 ⁽¹⁾	51 ⁽³⁾	56 ⁽²⁾	9 ⁽⁵⁾	43
Show all
7		50 ⁽³⁾	55 ⁽²⁾	8 ⁽⁵⁾	42
6		49 ⁽³⁾	54 ⁽²⁾	7.1 ⁽⁵⁾	41
5.5		48 ⁽³⁾	53 ⁽²⁾	7 ⁽⁵⁾	40
		47 ⁽³⁾	52 ⁽²⁾	6.1	39
		46 ⁽³⁾	51 ⁽²⁾	6	38
		45 ⁽³⁾	50 ⁽²⁾	5.1	37
		44 ⁽³⁾	49 ⁽²⁾	5	36
		43 ⁽³⁾	48 ⁽²⁾	4	35
		42 ⁽³⁾	47 ⁽²⁾	3.2	34
		41 ⁽³⁾	46 ⁽²⁾	3.1	33
		40 ⁽³⁾	45 ⁽²⁾		32
		39 ⁽³⁾	44 ⁽²⁾		31
		38 ⁽³⁾	43 ⁽²⁾		30
		37 ⁽³⁾	42 ⁽²⁾		29
		36 ⁽³⁾	41 ⁽²⁾		28
		35 ⁽³⁾	40 ⁽¹⁾		27
		34 ⁽³⁾	39 ⁽¹⁾		26
		33 ⁽³⁾	38 ⁽¹⁾		25
		32 ⁽³⁾	37 ⁽¹⁾		24
		31 ⁽³⁾	36 ⁽¹⁾		23
		30 ⁽³⁾	35 ⁽¹⁾		22
		29	34 ⁽¹⁾		21
		28	33 ⁽¹⁾		20
		27	32 ⁽¹⁾		19
		26	31 ⁽¹⁾		18
		25	30 ⁽¹⁾		17
		24	29 ⁽¹⁾		16
		23	28 ⁽¹⁾		15
		22	27 ⁽¹⁾		12.1
		21	26		12
		20	25		11.6
		19	24		11.5
		18	23		11.1
		17	22		11
		16	21		10.6
		15	20		10.5
		14	19		10.0-10.1
		13	18		9.5-9.6
		12	17		9
		11	16
		10	15
		9	14
		8	13
		7	12
		6	11
		5	10
		4	9
		3.6	8
		3.5	7
		3	6
		2	5
			4

iOS Safari	Opera Mini	Android Browser	Blackberry Browser	Opera Mobile	Android Chrome	Android Firefox	IE Mobile	Android UC Browser	Samsung Internet	QQ Browser	Baidu Browser
11 ⁽⁴⁾
10.3 ⁽⁴⁾	all ⁽⁴⁾	56	10	37	59	54	11 ⁽⁵⁾	11.4 ⁽⁴⁾	5	1.2 ⁽²⁾	7.12
10.0-10.2 ⁽⁴⁾		4.4.3-4.4.4	7	12.1			10 ⁽⁵⁾		4
9.3 ⁽⁴⁾		4.4		12
9.0-9.2 ⁽⁴⁾		4.2-4.3		11.5
Show all
8.1-8.4 ⁽⁴⁾		4.1		11.1
8 ⁽⁴⁾		4		11
7.0-7.1 ⁽⁴⁾		3		10
6.0-6.1 ⁽⁴⁾		2.3
5.0-5.1 ⁽⁴⁾		2.2
4.2-4.3		2.1
4.0-4.1
3.2

Notes

This support information does not include support for other autocomplete values.

As described in detail below, many modern browsers ignore the off value on certain fields in certain cases intentionally in order to give the user more control over autofilling fields. One example is the use of password managers.

Partial support refers to ignoring the off value for password fields. see related blog post
Partial support in Chrome refers to the browser intentionally ignoring autocomplete="off" when the user uses the browser's autofill functionality. see bug
Partial support in Firefox refers to ignoring autocomplete="off" for login forms. see bug
Browser does not display previously submitted values as options with on value.
Safari ignores the off value for username, email and password fields

Resources

Mozilla Developer Network (MDN) documentation - autocomplete attribute

Data by caniuse.com
Licensed under the Creative Commons Attribution License v4.0.
http://caniuse.com/#feat=input-autocomplete-onoff