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Usage Stats (%)

Engines	Data Source
Engines	#1	#2	#3	#4	#5
Gecko	12	12	9.4	17	29
Presto (Opera)	.75	.25	.7		2.2
Trident (Internet Explorer)	61	39	50	56	34
WebKit/KHTML	26	47	40	27	33

Engines	Versions	Data Source
Engines	Versions	#1	#2	#3	#4	#5
Gecko	34.0 (e.g. FF34)	.2
	33.0 (e.g. FF33)	2.3	1.4		.15	1.2
	32.0 (e.g. FF32)	8.0	7.9	4.5	5.6	2.1
	31.0 (e.g. FF31)	.55	.6	1.3	4.3	.85
	30.0 (e.g. FF30)	.35		.15	.8	3.6
	29.0 (e.g. FF28)	.2	.2	.15
	28.0 (e.g. FF28)			.15
	27.0 (e.g. FF27)
	26.0 (e.g. FF26)
	25.0 (e.g. FF25)	.15		.15
	24.0 (e.g. FF24)	.3	.25	.95	.15
	23.0 (e.g. FF23)	.15			.05
	22.0 (e.g. FF22)		.6			1.1
	21.0 (e.g. FF21)		.95		.35	9.3
	20.0 (e.g. FF20)					.55
	19.0 (e.g. FF19)
	18.0 (e.g. FF18)
	17.0 (e.g. FF17)	.15
	16.0 (e.g. FF16)
	15.0 (e.g. FF15)			.1
	14.0 (e.g. FF14)		.2			1.7
	13.0 (e.g. FF13)
	12.0 (e.g. FF12)					3.3
	11.0 (e.g. FF11)				.05	1.5
	10.0 (e.g. FF10)				.2
	9.0 (e.g. FF9)
	8.0 (e.g. FF8)
	7.0 (e.g. FF7)
	6.0 (e.g. FF6)					.85
	5.0 (e.g. FF5)		.15
	2.0 (e.g. FF4)					.85
	1.9 (e.g. FF3)	.15	.3	1.6		3.4
	1.8&older (e.g. FF2&older)			.3	3.8	.2
	Other			.05	1.8
Presto	All Opera	.75	.25	.7		2.2
Trident	IE11	25	17			7.9
	IE10	6.4	4.0	3.0	1.8	3.7
	IE9	9.1	7.5	9.6	2.0	2.0
	IE8	18	7.5	21	10	4.4
	IE7	.55	.8	5.3	42	1.3
	IE6	1.8	2.2	11		15
	IE5		.15	.25	.15	.3
WebKit /KHTML	All Chrome	20	28	40	27	20
WebKit /KHTML	All Safari etc.	5.0	19	40	27	14
Other	Identified
Other	Unidentified

Mobile			.6			.55

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This page presents web browser statistics from several sources that may be of interest to website designers.

Caution, stats mislead: caching skews raw data; audiences vary for each site; survey methods vary; surveys lack vital details; surveys mis-identify browsers; surveys include user agents that aren’t browsers; small sample sizes magnify fluctuations; and stats don’t count those who flee because their browsers aren’t supported. [more…] Opera 10 and up are special problems: naïve browser sniffers may identify them as Opera 9, or identify Opera 15 and up as Safari or Chrome. Internet Explorer 11 is also a special problem: because it has a significantly different userAgent string, naïve browser sniffers will not recognize it.

“Get your facts first, and then you can distort them as much as you please: facts are stubborn, but statistics are more pliable” — Mark Twain
~
[more stats quotes…]

The table Usage Stats lists stats from several sources, showing how much stats can vary:

Source 1 stats are from Net Applications’ Market Share. The stats exclude mobile devices.
Source 2 stats are from the Pitt County, North Carolina website.
Source 3 stats are from a US Environmental Protection Agency server.
Source 4 stats are from a USGS server. Users are mainly from the US, many from government and educational institutions. Note: recent IE5.01 percentages are anomalously very high, and may be distorting all the numbers from this source.
Source 5 stats are from this domain. Because of its special audience, its stats apply to a narrow segment of the population.

The best stats for a site are the stats gathered for that particular site: and even these are skewed by caching and faulty browser-detection. For example, consider Kerry Watson’s Browser Statistics page: this page uses three different hit counters whose reports should be comparable; but they are not, in part because of faulty browser detection.

Bottom line: use statistics with extreme caution.

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Usage Stats (%)

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