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SSL certificate authorities ranked by usage on top websites
This diagram shows the share of top sites among all the sites for various SSL certificate authorities.
We calculate a top-site score from the usage of a technology by top sites compared to its usage by average sites. The score is derived from measurements at several traffic levels, but roughly speaking, score 2 means that usage of the technology is twice as common among top 1,000 sites than among top 10 million sites. Score -3 means that usage by top 10 million sites is three times as common as by top 1,000 sites. Only technologies used by 10 sites or more are included in this report. See technologies overview for further explanations on the methodologies used in the surveys.
How to read the diagram:
You can find top site usage data for all 50 SSL certificate authorities in our SSL certificate authorities market report.
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