Every one of them, best first

How to read these figures

The colour says what a bar IS, not how it scores: the accent is the one this page is about, grey is everything it is compared with, and the hollow bar is the web overall — the ruler, not a rival. Whether a figure is above or below the rest of the web is in the number and in the arrow beside it.

Every figure here comes from a sample, not from counting every site — so it carries a margin: how much it could move if we had happened to sample different pages. A figure measured on a thousand pages has a wide margin; one measured on a hundred thousand has a narrow one. It matters for one thing: two figures that differ by less than the wider of their margins are not one above the other, they are tied. That is why nothing here has a position number.

Every technology in this category the census can publish a figure for, including the ones above. A technology is here when it has all four dimensions and enough sample to publish; a technology that belongs to two categories is in both.

TechnologyAWCSMonth by month
Google PageSpeed

Google PageSpeed

Sample
n=401
Coverage
98.3%
Margin
±2.65
The web overall
21.0%

Two figures closer together than ±2.65 are tied, not ranked.

Google PageSpeed scores 17.0%17.0%
Google PageSpeed: 5 months, up▲ +3.7
OpenSSL

OpenSSL

Sample
n=1,049
Coverage
93.9%
Margin
±1.64
The web overall
21.0%

Two figures closer together than ±1.64 are tied, not ranked.

OpenSSL scores 14.7%14.7%
OpenSSL: 5 months, no significant change= +1.1