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.
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:
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.